From 8dddfa7af22f9e015009170953b36b3b69a7a509 Mon Sep 17 00:00:00 2001
From: Matt Neuburg <matt@tidbits.com>
Date: Sat, 26 Jul 2014 20:39:24 -0700
Subject: [PATCH] split last example of chapter 8 into two, one in Swift
 (prohibitively slow), one in Objective-C

---
 .../AppDelegate.h                             |   0
 .../AppDelegate.m                             |   0
 .../Base.lproj/Main.storyboard                |  84 +++
 .../ch21p748collectionViewFlowLayout2/Cell.h  |   0
 .../ch21p748collectionViewFlowLayout2/Cell.m  |   0
 .../Cell.xib                                  |  62 ++
 .../AppIcon.appiconset/Contents.json          |   0
 .../LaunchImage.launchimage/Contents.json     |   0
 .../MyFlowLayout.h                            |   0
 .../MyFlowLayout.m                            |   0
 .../MyLayout.h                                |   0
 .../MyLayout.m                                |   0
 .../ViewController.h                          |   0
 .../ViewController.m                          |   5 +
 .../ViewController2.h                         |   0
 .../ViewController2.m                         |   3 +-
 ...ionViewLayoutFromScratch-Bridging-Header.h |   0
 ...ectionViewLayoutFromScratchObjc-Info.plist |   0
 ...ectionViewLayoutFromScratchObjc-Prefix.pch |   0
 .../en.lproj/InfoPlist.strings                |   0
 .../flag_alabama.gif                          | Bin
 .../flag_alaska.gif                           | Bin
 .../flag_arizona.gif                          | Bin
 .../flag_arkansas.gif                         | Bin
 .../flag_california.gif                       | Bin
 .../flag_colorado.gif                         | Bin
 .../flag_connecticut.gif                      | Bin
 .../flag_delaware.gif                         | Bin
 .../flag_florida.gif                          | Bin
 .../flag_georgia.gif                          | Bin
 .../flag_hawaii.gif                           | Bin
 .../flag_idaho.gif                            | Bin
 .../flag_illinois.gif                         | Bin
 .../flag_indiana.gif                          | Bin
 .../flag_iowa.gif                             | Bin
 .../flag_kansas.gif                           | Bin
 .../flag_kentucky.gif                         | Bin
 .../flag_louisiana.gif                        | Bin
 .../flag_maine.gif                            | Bin
 .../flag_maryland.gif                         | Bin
 .../flag_massachusetts.gif                    | Bin
 .../flag_michigan.gif                         | Bin
 .../flag_minnesota.gif                        | Bin
 .../flag_mississippi.gif                      | Bin
 .../flag_missouri.gif                         | Bin
 .../flag_montana.gif                          | Bin
 .../flag_nebraska.gif                         | Bin
 .../flag_nevada.gif                           | Bin
 .../flag_newhampshire.gif                     | Bin
 .../flag_newjersey.gif                        | Bin
 .../flag_newmexico.gif                        | Bin
 .../flag_newyork.gif                          | Bin
 .../flag_northcarolina.gif                    | Bin
 .../flag_northdakota.gif                      | Bin
 .../flag_ohio.gif                             | Bin
 .../flag_oklahoma.gif                         | Bin
 .../flag_oregon.gif                           | Bin
 .../flag_pennsylvania.gif                     | Bin
 .../flag_rhodeisland.gif                      | Bin
 .../flag_southcarolina.gif                    | Bin
 .../flag_southdakota.gif                      | Bin
 .../flag_tennessee.gif                        | Bin
 .../flag_texas.gif                            | Bin
 .../flag_utah.gif                             | Bin
 .../flag_vermont.gif                          | Bin
 .../flag_virginia.gif                         | Bin
 .../flag_washington.gif                       | Bin
 .../flag_westvirginia.gif                     | Bin
 .../flag_wisconsin.gif                        | Bin
 .../flag_wyoming.gif                          | Bin
 .../ch21p748collectionViewFlowLayout2/main.m  |   0
 .../states.txt                                |   0
 .../project.pbxproj                           | 575 ++++++++++++++++++
 .../AppDelegate.h                             |   9 +
 .../AppDelegate.m                             |  14 +
 .../Base.lproj/Main.storyboard                |   0
 .../Cell.swift                                |   0
 .../Cell.xib                                  |   0
 .../AppIcon.appiconset/Contents.json          |  23 +
 .../LaunchImage.launchimage/Contents.json     |  23 +
 .../MyFlowLayout.swift                        |   0
 .../MyLayout.swift                            |   0
 .../ViewController.swift                      |   6 +
 .../ViewController2.swift                     |   0
 ...ionViewLayoutFromScratch-Bridging-Header.h |   4 +
 ...collectionViewLayoutFromScratch-Info.plist |  40 ++
 ...collectionViewLayoutFromScratch-Prefix.pch |  16 +
 .../en.lproj/InfoPlist.strings                |   2 +
 .../flag_alabama.gif                          | Bin 0 -> 1531 bytes
 .../flag_alaska.gif                           | Bin 0 -> 1619 bytes
 .../flag_arizona.gif                          | Bin 0 -> 1933 bytes
 .../flag_arkansas.gif                         | Bin 0 -> 2162 bytes
 .../flag_california.gif                       | Bin 0 -> 1920 bytes
 .../flag_colorado.gif                         | Bin 0 -> 1452 bytes
 .../flag_connecticut.gif                      | Bin 0 -> 2264 bytes
 .../flag_delaware.gif                         | Bin 0 -> 2174 bytes
 .../flag_florida.gif                          | Bin 0 -> 2093 bytes
 .../flag_georgia.gif                          | Bin 0 -> 1577 bytes
 .../flag_hawaii.gif                           | Bin 0 -> 1763 bytes
 .../flag_idaho.gif                            | Bin 0 -> 2187 bytes
 .../flag_illinois.gif                         | Bin 0 -> 1770 bytes
 .../flag_indiana.gif                          | Bin 0 -> 2033 bytes
 .../flag_iowa.gif                             | Bin 0 -> 1937 bytes
 .../flag_kansas.gif                           | Bin 0 -> 1846 bytes
 .../flag_kentucky.gif                         | Bin 0 -> 2104 bytes
 .../flag_louisiana.gif                        | Bin 0 -> 2106 bytes
 .../flag_maine.gif                            | Bin 0 -> 2158 bytes
 .../flag_maryland.gif                         | Bin 0 -> 1903 bytes
 .../flag_massachusetts.gif                    | Bin 0 -> 1741 bytes
 .../flag_michigan.gif                         | Bin 0 -> 2158 bytes
 .../flag_minnesota.gif                        | Bin 0 -> 1689 bytes
 .../flag_mississippi.gif                      | Bin 0 -> 2004 bytes
 .../flag_missouri.gif                         | Bin 0 -> 1811 bytes
 .../flag_montana.gif                          | Bin 0 -> 1745 bytes
 .../flag_nebraska.gif                         | Bin 0 -> 1734 bytes
 .../flag_nevada.gif                           | Bin 0 -> 1452 bytes
 .../flag_newhampshire.gif                     | Bin 0 -> 1704 bytes
 .../flag_newjersey.gif                        | Bin 0 -> 2424 bytes
 .../flag_newmexico.gif                        | Bin 0 -> 1641 bytes
 .../flag_newyork.gif                          | Bin 0 -> 2300 bytes
 .../flag_northcarolina.gif                    | Bin 0 -> 1511 bytes
 .../flag_northdakota.gif                      | Bin 0 -> 2256 bytes
 .../flag_ohio.gif                             | Bin 0 -> 1649 bytes
 .../flag_oklahoma.gif                         | Bin 0 -> 1830 bytes
 .../flag_oregon.gif                           | Bin 0 -> 2092 bytes
 .../flag_pennsylvania.gif                     | Bin 0 -> 1849 bytes
 .../flag_rhodeisland.gif                      | Bin 0 -> 1604 bytes
 .../flag_southcarolina.gif                    | Bin 0 -> 1594 bytes
 .../flag_southdakota.gif                      | Bin 0 -> 1904 bytes
 .../flag_tennessee.gif                        | Bin 0 -> 1843 bytes
 .../flag_texas.gif                            | Bin 0 -> 1423 bytes
 .../flag_utah.gif                             | Bin 0 -> 2386 bytes
 .../flag_vermont.gif                          | Bin 0 -> 2124 bytes
 .../flag_virginia.gif                         | Bin 0 -> 2062 bytes
 .../flag_washington.gif                       | Bin 0 -> 1579 bytes
 .../flag_westvirginia.gif                     | Bin 0 -> 2018 bytes
 .../flag_wisconsin.gif                        | Bin 0 -> 2251 bytes
 .../flag_wyoming.gif                          | Bin 0 -> 1719 bytes
 .../ch21p748collectionViewFlowLayout2/main.m  |  18 +
 .../states.txt                                |  50 ++
 .../project.pbxproj                           |  20 -
 141 files changed, 932 insertions(+), 22 deletions(-)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/AppDelegate.h (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/AppDelegate.m (100%)
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/Base.lproj/Main.storyboard
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/Cell.h (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/Cell.m (100%)
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/Cell.xib
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/Images.xcassets/AppIcon.appiconset/Contents.json (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/Images.xcassets/LaunchImage.launchimage/Contents.json (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/MyFlowLayout.h (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/MyFlowLayout.m (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/MyLayout.h (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/MyLayout.m (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/ViewController.h (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/ViewController.m (97%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/ViewController2.h (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/ViewController2.m (96%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratch-Bridging-Header.h (100%)
 rename bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratch-Info.plist => bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratchObjc-Info.plist (100%)
 rename bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratch-Prefix.pch => bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratchObjc-Prefix.pch (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/en.lproj/InfoPlist.strings (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_alabama.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_alaska.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_arizona.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_arkansas.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_california.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_colorado.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_connecticut.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_delaware.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_florida.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_georgia.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_hawaii.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_idaho.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_illinois.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_indiana.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_iowa.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_kansas.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_kentucky.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_louisiana.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_maine.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_maryland.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_massachusetts.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_michigan.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_minnesota.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_mississippi.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_missouri.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_montana.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_nebraska.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_nevada.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_newhampshire.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_newjersey.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_newmexico.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_newyork.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_northcarolina.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_northdakota.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_ohio.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_oklahoma.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_oregon.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_pennsylvania.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_rhodeisland.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_southcarolina.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_southdakota.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_tennessee.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_texas.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_utah.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_vermont.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_virginia.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_washington.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_westvirginia.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_wisconsin.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/flag_wyoming.gif (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/main.m (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchObjc}/ch21p748collectionViewFlowLayout2/states.txt (100%)
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewLayoutFromScratchObjc.xcodeproj/project.pbxproj
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/AppDelegate.h
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/AppDelegate.m
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchSwift}/ch21p748collectionViewFlowLayout2/Base.lproj/Main.storyboard (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchSwift}/ch21p748collectionViewFlowLayout2/Cell.swift (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchSwift}/ch21p748collectionViewFlowLayout2/Cell.xib (100%)
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/Images.xcassets/AppIcon.appiconset/Contents.json
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/Images.xcassets/LaunchImage.launchimage/Contents.json
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchSwift}/ch21p748collectionViewFlowLayout2/MyFlowLayout.swift (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchSwift}/ch21p748collectionViewFlowLayout2/MyLayout.swift (100%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchSwift}/ch21p748collectionViewFlowLayout2/ViewController.swift (97%)
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchSwift}/ch21p748collectionViewFlowLayout2/ViewController2.swift (100%)
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratch-Bridging-Header.h
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratch-Info.plist
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratch-Prefix.pch
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/en.lproj/InfoPlist.strings
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_alabama.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_alaska.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_arizona.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_arkansas.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_california.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_colorado.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_connecticut.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_delaware.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_florida.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_georgia.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_hawaii.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_idaho.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_illinois.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_indiana.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_iowa.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_kansas.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_kentucky.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_louisiana.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_maine.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_maryland.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_massachusetts.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_michigan.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_minnesota.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_mississippi.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_missouri.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_montana.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_nebraska.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_nevada.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_newhampshire.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_newjersey.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_newmexico.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_newyork.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_northcarolina.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_northdakota.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_ohio.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_oklahoma.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_oregon.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_pennsylvania.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_rhodeisland.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_southcarolina.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_southdakota.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_tennessee.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_texas.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_utah.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_vermont.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_virginia.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_washington.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_westvirginia.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_wisconsin.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/flag_wyoming.gif
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/main.m
 create mode 100644 bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/states.txt
 rename {bk2ch08p467collectionViewLayoutFromScratch => bk2ch08p467collectionViewLayoutFromScratchSwift}/ch21p748collectionViewLayoutFromScratch.xcodeproj/project.pbxproj (94%)

diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/AppDelegate.h b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/AppDelegate.h
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/AppDelegate.h
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/AppDelegate.h
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/AppDelegate.m b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/AppDelegate.m
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/AppDelegate.m
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/AppDelegate.m
diff --git a/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/Base.lproj/Main.storyboard b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/Base.lproj/Main.storyboard
new file mode 100644
index 000000000..127e75fa2
--- /dev/null
+++ b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/Base.lproj/Main.storyboard
@@ -0,0 +1,84 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="6185.11" systemVersion="13E28" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" initialViewController="0xu-nK-N1B">
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="6190.4"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="cCN-RP-8My">
+            <objects>
+                <collectionViewController autoresizesArchivedViewToFullSize="NO" id="HB2-Ma-jWh" customClass="ViewController" sceneMemberID="viewController">
+                    <collectionView key="view" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" minimumZoomScale="0.0" maximumZoomScale="0.0" dataMode="prototypes" id="LlB-UA-kWU">
+                        <rect key="frame" x="0.0" y="0.0" width="320" height="568"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
+                        <collectionViewLayout key="collectionViewLayout" id="CSa-Tu-9qI" customClass="MyLayout"/>
+                        <cells/>
+                        <connections>
+                            <outlet property="dataSource" destination="HB2-Ma-jWh" id="kls-ht-7Rp"/>
+                            <outlet property="delegate" destination="HB2-Ma-jWh" id="iHs-Gu-0WL"/>
+                        </connections>
+                    </collectionView>
+                    <navigationItem key="navigationItem" id="rNM-gj-q9Q"/>
+                    <connections>
+                        <segue destination="zGA-DZ-fGa" kind="push" identifier="push" id="46E-wl-2z6"/>
+                    </connections>
+                </collectionViewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="lxD-hh-m9y" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="720" y="107"/>
+        </scene>
+        <!--View Controller2-->
+        <scene sceneID="UjP-7S-lyn">
+            <objects>
+                <collectionViewController autoresizesArchivedViewToFullSize="NO" id="zGA-DZ-fGa" customClass="ViewController2" sceneMemberID="viewController">
+                    <collectionView key="view" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" minimumZoomScale="0.0" maximumZoomScale="0.0" dataMode="prototypes" id="Ca8-jF-93u">
+                        <rect key="frame" x="0.0" y="0.0" width="320" height="568"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" red="1" green="0.50196081400000003" blue="0.0" alpha="1" colorSpace="calibratedRGB"/>
+                        <collectionViewFlowLayout key="collectionViewLayout" minimumLineSpacing="10" minimumInteritemSpacing="10" id="wCz-is-5YI" customClass="MyFlowLayout">
+                            <size key="itemSize" width="50" height="50"/>
+                            <size key="headerReferenceSize" width="0.0" height="0.0"/>
+                            <size key="footerReferenceSize" width="0.0" height="0.0"/>
+                            <inset key="sectionInset" minX="0.0" minY="0.0" maxX="0.0" maxY="0.0"/>
+                        </collectionViewFlowLayout>
+                        <cells/>
+                        <connections>
+                            <outlet property="dataSource" destination="zGA-DZ-fGa" id="raD-Dt-jrc"/>
+                            <outlet property="delegate" destination="zGA-DZ-fGa" id="iJz-9I-hV3"/>
+                        </connections>
+                    </collectionView>
+                    <navigationItem key="navigationItem" id="OZT-eb-wqO"/>
+                </collectionViewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="Wfp-Pf-RAK" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="1209" y="123"/>
+        </scene>
+        <!--Navigation Controller-->
+        <scene sceneID="Jpu-E2-pFh">
+            <objects>
+                <navigationController automaticallyAdjustsScrollViewInsets="NO" id="0xu-nK-N1B" sceneMemberID="viewController">
+                    <toolbarItems/>
+                    <navigationBar key="navigationBar" contentMode="scaleToFill" id="Dbt-l6-0GK">
+                        <rect key="frame" x="0.0" y="0.0" width="320" height="44"/>
+                        <autoresizingMask key="autoresizingMask"/>
+                    </navigationBar>
+                    <nil name="viewControllers"/>
+                    <connections>
+                        <segue destination="HB2-Ma-jWh" kind="relationship" relationship="rootViewController" id="xPG-ms-bBj"/>
+                    </connections>
+                </navigationController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="dHG-P0-QBl" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="194" y="107"/>
+        </scene>
+    </scenes>
+    <simulatedMetricsContainer key="defaultSimulatedMetrics">
+        <simulatedStatusBarMetrics key="statusBar"/>
+        <simulatedOrientationMetrics key="orientation"/>
+        <simulatedScreenMetrics key="destination" type="retina4">
+            <size key="portraitSize" width="320" height="568"/>
+            <size key="landscapeSize" width="568" height="320"/>
+        </simulatedScreenMetrics>
+    </simulatedMetricsContainer>
+</document>
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/Cell.h b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/Cell.h
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/Cell.h
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/Cell.h
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/Cell.m b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/Cell.m
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/Cell.m
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/Cell.m
diff --git a/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/Cell.xib b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/Cell.xib
new file mode 100644
index 000000000..be6a09a27
--- /dev/null
+++ b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/Cell.xib
@@ -0,0 +1,62 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="6185.11" systemVersion="13E28" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES">
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="6190.4"/>
+    </dependencies>
+    <objects>
+        <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner"/>
+        <placeholder placeholderIdentifier="IBFirstResponder" id="-2" customClass="UIResponder"/>
+        <collectionViewCell opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" id="c69-n7-Tbx" customClass="Cell">
+            <rect key="frame" x="0.0" y="0.0" width="246" height="50"/>
+            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+            <view key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center">
+                <rect key="frame" x="0.0" y="0.0" width="246" height="50"/>
+                <autoresizingMask key="autoresizingMask"/>
+                <subviews>
+                    <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="1VV-qg-y0Q">
+                        <rect key="frame" x="0.0" y="0.0" width="246" height="50"/>
+                        <subviews>
+                            <label opaque="NO" clipsSubviews="YES" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Label" textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="FVF-IM-x2t">
+                                <rect key="frame" x="2" y="2" width="242" height="46"/>
+                                <fontDescription key="fontDescription" name="GillSans-Bold" family="Gill Sans" pointSize="17"/>
+                                <color key="textColor" red="0.0" green="1" blue="0.1426398754" alpha="1" colorSpace="calibratedRGB"/>
+                                <color key="highlightedColor" white="0.33333333333333331" alpha="1" colorSpace="calibratedWhite"/>
+                                <color key="shadowColor" red="1" green="0.50196081400000003" blue="0.0" alpha="0.59999999999999998" colorSpace="calibratedRGB"/>
+                                <size key="shadowOffset" width="2" height="2"/>
+                            </label>
+                        </subviews>
+                        <color key="backgroundColor" white="0.0" alpha="0.0" colorSpace="calibratedWhite"/>
+                        <constraints>
+                            <constraint firstItem="FVF-IM-x2t" firstAttribute="top" secondItem="1VV-qg-y0Q" secondAttribute="top" constant="2" id="7SI-2i-Tv0"/>
+                            <constraint firstItem="FVF-IM-x2t" firstAttribute="leading" secondItem="1VV-qg-y0Q" secondAttribute="leading" constant="2" id="DO8-WH-fLU"/>
+                            <constraint firstAttribute="trailing" secondItem="FVF-IM-x2t" secondAttribute="trailing" constant="2" id="TEa-in-1ao"/>
+                            <constraint firstAttribute="bottom" secondItem="FVF-IM-x2t" secondAttribute="bottom" constant="2" id="vhX-lP-Ut7"/>
+                        </constraints>
+                    </view>
+                </subviews>
+                <color key="backgroundColor" white="0.0" alpha="0.0" colorSpace="calibratedWhite"/>
+                <nil key="simulatedStatusBarMetrics"/>
+                <freeformSimulatedSizeMetrics key="simulatedDestinationMetrics"/>
+            </view>
+            <constraints>
+                <constraint firstAttribute="trailing" secondItem="1VV-qg-y0Q" secondAttribute="trailing" id="K5z-7i-Uge"/>
+                <constraint firstItem="1VV-qg-y0Q" firstAttribute="leading" secondItem="c69-n7-Tbx" secondAttribute="leading" id="OJp-7Y-iMe"/>
+                <constraint firstAttribute="bottom" secondItem="1VV-qg-y0Q" secondAttribute="bottom" id="XJl-3z-MnA"/>
+                <constraint firstItem="1VV-qg-y0Q" firstAttribute="top" secondItem="c69-n7-Tbx" secondAttribute="top" id="ggF-qW-eaq"/>
+            </constraints>
+            <size key="customSize" width="246" height="50"/>
+            <connections>
+                <outlet property="container" destination="1VV-qg-y0Q" id="WYX-sC-E6q"/>
+                <outlet property="lab" destination="FVF-IM-x2t" id="iiY-dg-bso"/>
+            </connections>
+        </collectionViewCell>
+    </objects>
+    <simulatedMetricsContainer key="defaultSimulatedMetrics">
+        <simulatedStatusBarMetrics key="statusBar"/>
+        <simulatedOrientationMetrics key="orientation"/>
+        <simulatedScreenMetrics key="destination" type="retina4">
+            <size key="portraitSize" width="320" height="568"/>
+            <size key="landscapeSize" width="568" height="320"/>
+        </simulatedScreenMetrics>
+    </simulatedMetricsContainer>
+</document>
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/Images.xcassets/AppIcon.appiconset/Contents.json b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/Images.xcassets/AppIcon.appiconset/Contents.json
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/Images.xcassets/AppIcon.appiconset/Contents.json
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/Images.xcassets/AppIcon.appiconset/Contents.json
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/Images.xcassets/LaunchImage.launchimage/Contents.json b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/Images.xcassets/LaunchImage.launchimage/Contents.json
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/Images.xcassets/LaunchImage.launchimage/Contents.json
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/Images.xcassets/LaunchImage.launchimage/Contents.json
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/MyFlowLayout.h b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/MyFlowLayout.h
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/MyFlowLayout.h
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/MyFlowLayout.h
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/MyFlowLayout.m b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/MyFlowLayout.m
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/MyFlowLayout.m
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/MyFlowLayout.m
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/MyLayout.h b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/MyLayout.h
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/MyLayout.h
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/MyLayout.h
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/MyLayout.m b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/MyLayout.m
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/MyLayout.m
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/MyLayout.m
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/ViewController.h b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/ViewController.h
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/ViewController.h
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/ViewController.h
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/ViewController.m b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/ViewController.m
similarity index 97%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/ViewController.m
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/ViewController.m
index fef2a936c..7474d2bbb 100644
--- a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/ViewController.m
+++ b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/ViewController.m
@@ -1,5 +1,10 @@
 
 
+/*
+ I've provided two independent versions of this example, one Swift, one Objective-C,
+ because the Swift version is prohibitively slow (especially on a device)
+ */
+
 #import "ViewController.h"
 #import "Cell.h"
 
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/ViewController2.h b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/ViewController2.h
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/ViewController2.h
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/ViewController2.h
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/ViewController2.m b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/ViewController2.m
similarity index 96%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/ViewController2.m
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/ViewController2.m
index f7403c553..7d289119b 100644
--- a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/ViewController2.m
+++ b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/ViewController2.m
@@ -1,8 +1,7 @@
 
 #import "ViewController2.h"
 #import "Cell.h"
-// #import "MyFlowLayout.h"
-#import "ch21p748collectionViewLayoutFromScratch-Swift.h"
+#import "MyFlowLayout.h"
 
 @interface ViewController2 ()
 @end
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratch-Bridging-Header.h b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratch-Bridging-Header.h
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratch-Bridging-Header.h
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratch-Bridging-Header.h
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratch-Info.plist b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratchObjc-Info.plist
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratch-Info.plist
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratchObjc-Info.plist
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratch-Prefix.pch b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratchObjc-Prefix.pch
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratch-Prefix.pch
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratchObjc-Prefix.pch
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/en.lproj/InfoPlist.strings b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/en.lproj/InfoPlist.strings
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/en.lproj/InfoPlist.strings
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/en.lproj/InfoPlist.strings
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_alabama.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_alabama.gif
similarity index 100%
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rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_alabama.gif
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_alaska.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_alaska.gif
similarity index 100%
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rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_alaska.gif
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_arizona.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_arizona.gif
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_arizona.gif
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_arizona.gif
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_arkansas.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_arkansas.gif
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_arkansas.gif
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_arkansas.gif
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_california.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_california.gif
similarity index 100%
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_colorado.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_colorado.gif
similarity index 100%
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_connecticut.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_connecticut.gif
similarity index 100%
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_delaware.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_delaware.gif
similarity index 100%
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_florida.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_florida.gif
similarity index 100%
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rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_florida.gif
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_georgia.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_georgia.gif
similarity index 100%
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rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_georgia.gif
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_hawaii.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_hawaii.gif
similarity index 100%
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_idaho.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_idaho.gif
similarity index 100%
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_illinois.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_illinois.gif
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_illinois.gif
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_indiana.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_indiana.gif
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_indiana.gif
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_indiana.gif
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_iowa.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_iowa.gif
similarity index 100%
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_kansas.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_kansas.gif
similarity index 100%
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_kentucky.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_kentucky.gif
similarity index 100%
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_louisiana.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_louisiana.gif
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_louisiana.gif
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_maine.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_maine.gif
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_maine.gif
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_maryland.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_maryland.gif
similarity index 100%
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_massachusetts.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_massachusetts.gif
similarity index 100%
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_michigan.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_michigan.gif
similarity index 100%
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_minnesota.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_minnesota.gif
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_minnesota.gif
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_minnesota.gif
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_mississippi.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_mississippi.gif
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_mississippi.gif
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_mississippi.gif
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_missouri.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_missouri.gif
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_missouri.gif
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_montana.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_montana.gif
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_montana.gif
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_montana.gif
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_nebraska.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_nebraska.gif
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_nebraska.gif
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_nevada.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_nevada.gif
similarity index 100%
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_newhampshire.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_newhampshire.gif
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_newhampshire.gif
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_newhampshire.gif
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_newjersey.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_newjersey.gif
similarity index 100%
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_newmexico.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_newmexico.gif
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_newmexico.gif
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_newyork.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_newyork.gif
similarity index 100%
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_northcarolina.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_northcarolina.gif
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_northcarolina.gif
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_northdakota.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_northdakota.gif
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_northdakota.gif
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_ohio.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_ohio.gif
similarity index 100%
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_oklahoma.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_oklahoma.gif
similarity index 100%
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_oregon.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_oregon.gif
similarity index 100%
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_pennsylvania.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_pennsylvania.gif
similarity index 100%
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_rhodeisland.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_rhodeisland.gif
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_rhodeisland.gif
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_southcarolina.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_southcarolina.gif
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_southcarolina.gif
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_southcarolina.gif
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_southdakota.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_southdakota.gif
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_southdakota.gif
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_tennessee.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_tennessee.gif
similarity index 100%
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diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_texas.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_texas.gif
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_texas.gif
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_texas.gif
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_utah.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_utah.gif
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_utah.gif
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_utah.gif
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_vermont.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_vermont.gif
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_vermont.gif
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_vermont.gif
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_virginia.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_virginia.gif
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_virginia.gif
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_virginia.gif
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_washington.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_washington.gif
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_washington.gif
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_washington.gif
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_westvirginia.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_westvirginia.gif
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_westvirginia.gif
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_westvirginia.gif
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_wisconsin.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_wisconsin.gif
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_wisconsin.gif
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_wisconsin.gif
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_wyoming.gif b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_wyoming.gif
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/flag_wyoming.gif
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/flag_wyoming.gif
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/main.m b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/main.m
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/main.m
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/main.m
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/states.txt b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/states.txt
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/states.txt
rename to bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewFlowLayout2/states.txt
diff --git a/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewLayoutFromScratchObjc.xcodeproj/project.pbxproj b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewLayoutFromScratchObjc.xcodeproj/project.pbxproj
new file mode 100644
index 000000000..6cdf55c66
--- /dev/null
+++ b/bk2ch08p467collectionViewLayoutFromScratchObjc/ch21p748collectionViewLayoutFromScratchObjc.xcodeproj/project.pbxproj
@@ -0,0 +1,575 @@
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+				GCC_WARN_UNINITIALIZED_AUTOS = YES;
+				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
+				ONLY_ACTIVE_ARCH = YES;
+				SDKROOT = iphoneos;
+			};
+			name = Debug;
+		};
+		C9F1DE4D1803183800AE4AE5 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_SEARCH_USER_PATHS = NO;
+				ARCHS = "$(ARCHS_STANDARD_INCLUDING_64_BIT)";
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
+				CLANG_CXX_LIBRARY = "libc++";
+				CLANG_ENABLE_MODULES = YES;
+				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
+				CLANG_WARN_EMPTY_BODY = YES;
+				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
+				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
+				COPY_PHASE_STRIP = YES;
+				ENABLE_NS_ASSERTIONS = NO;
+				GCC_C_LANGUAGE_STANDARD = gnu99;
+				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
+				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
+				GCC_WARN_UNDECLARED_SELECTOR = YES;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES;
+				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
+				SDKROOT = iphoneos;
+				VALIDATE_PRODUCT = YES;
+			};
+			name = Release;
+		};
+		C9F1DE4F1803183800AE4AE5 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ARCHS = "$(ARCHS_STANDARD)";
+				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				ASSETCATALOG_COMPILER_LAUNCHIMAGE_NAME = LaunchImage;
+				CLANG_ENABLE_MODULES = YES;
+				GCC_PRECOMPILE_PREFIX_HEADER = YES;
+				GCC_PREFIX_HEADER = "ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratchObjc-Prefix.pch";
+				INFOPLIST_FILE = "ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratchObjc-Info.plist";
+				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
+				ONLY_ACTIVE_ARCH = NO;
+				PRODUCT_NAME = ch21p748collectionViewLayoutFromScratchObjc;
+				SWIFT_OBJC_BRIDGING_HEADER = "ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratch-Bridging-Header.h";
+				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				WRAPPER_EXTENSION = app;
+			};
+			name = Debug;
+		};
+		C9F1DE501803183800AE4AE5 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ARCHS = "$(ARCHS_STANDARD)";
+				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				ASSETCATALOG_COMPILER_LAUNCHIMAGE_NAME = LaunchImage;
+				CLANG_ENABLE_MODULES = YES;
+				GCC_PRECOMPILE_PREFIX_HEADER = YES;
+				GCC_PREFIX_HEADER = "ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratchObjc-Prefix.pch";
+				INFOPLIST_FILE = "ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratchObjc-Info.plist";
+				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
+				ONLY_ACTIVE_ARCH = NO;
+				PRODUCT_NAME = ch21p748collectionViewLayoutFromScratchObjc;
+				SWIFT_OBJC_BRIDGING_HEADER = "ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratch-Bridging-Header.h";
+				WRAPPER_EXTENSION = app;
+			};
+			name = Release;
+		};
+/* End XCBuildConfiguration section */
+
+/* Begin XCConfigurationList section */
+		C9F1DE171803183800AE4AE5 /* Build configuration list for PBXProject "ch21p748collectionViewLayoutFromScratchObjc" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				C9F1DE4C1803183800AE4AE5 /* Debug */,
+				C9F1DE4D1803183800AE4AE5 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		C9F1DE4E1803183800AE4AE5 /* Build configuration list for PBXNativeTarget "ch21p748collectionViewLayoutFromScratchObjc" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				C9F1DE4F1803183800AE4AE5 /* Debug */,
+				C9F1DE501803183800AE4AE5 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+/* End XCConfigurationList section */
+	};
+	rootObject = C9F1DE141803183800AE4AE5 /* Project object */;
+}
diff --git a/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/AppDelegate.h b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/AppDelegate.h
new file mode 100644
index 000000000..21f5cd392
--- /dev/null
+++ b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/AppDelegate.h
@@ -0,0 +1,9 @@
+
+
+#import <UIKit/UIKit.h>
+
+@interface AppDelegate : UIResponder <UIApplicationDelegate>
+
+@property (strong, nonatomic) UIWindow *window;
+
+@end
diff --git a/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/AppDelegate.m b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/AppDelegate.m
new file mode 100644
index 000000000..f5bfca3ef
--- /dev/null
+++ b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/AppDelegate.m
@@ -0,0 +1,14 @@
+
+
+#import "AppDelegate.h"
+
+@implementation AppDelegate
+
+- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
+{
+    // Override point for customization after application launch.
+    return YES;
+}
+							
+
+@end
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/Base.lproj/Main.storyboard b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/Base.lproj/Main.storyboard
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/Base.lproj/Main.storyboard
rename to bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/Base.lproj/Main.storyboard
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/Cell.swift b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/Cell.swift
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/Cell.swift
rename to bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/Cell.swift
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/Cell.xib b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/Cell.xib
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/Cell.xib
rename to bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/Cell.xib
diff --git a/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/Images.xcassets/AppIcon.appiconset/Contents.json b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/Images.xcassets/AppIcon.appiconset/Contents.json
new file mode 100644
index 000000000..a396706db
--- /dev/null
+++ b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/Images.xcassets/AppIcon.appiconset/Contents.json
@@ -0,0 +1,23 @@
+{
+  "images" : [
+    {
+      "idiom" : "iphone",
+      "size" : "29x29",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "40x40",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "60x60",
+      "scale" : "2x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}
\ No newline at end of file
diff --git a/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/Images.xcassets/LaunchImage.launchimage/Contents.json b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/Images.xcassets/LaunchImage.launchimage/Contents.json
new file mode 100644
index 000000000..c79ebd3ad
--- /dev/null
+++ b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/Images.xcassets/LaunchImage.launchimage/Contents.json
@@ -0,0 +1,23 @@
+{
+  "images" : [
+    {
+      "orientation" : "portrait",
+      "idiom" : "iphone",
+      "extent" : "full-screen",
+      "minimum-system-version" : "7.0",
+      "scale" : "2x"
+    },
+    {
+      "orientation" : "portrait",
+      "idiom" : "iphone",
+      "subtype" : "retina4",
+      "extent" : "full-screen",
+      "minimum-system-version" : "7.0",
+      "scale" : "2x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}
\ No newline at end of file
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/MyFlowLayout.swift b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/MyFlowLayout.swift
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/MyFlowLayout.swift
rename to bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/MyFlowLayout.swift
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/MyLayout.swift b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/MyLayout.swift
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/MyLayout.swift
rename to bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/MyLayout.swift
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/ViewController.swift b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/ViewController.swift
similarity index 97%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/ViewController.swift
rename to bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/ViewController.swift
index 179fcccca..9b6266bc4 100644
--- a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/ViewController.swift
+++ b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/ViewController.swift
@@ -2,6 +2,12 @@
 
 import UIKit
 
+/*
+I've provided two independent versions of this example, one Swift, one Objective-C,
+because the Swift version is prohibitively slow (especially on a device)
+*/
+
+
 class ViewController : UICollectionViewController {
     
     var sectionNames = [String]()
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/ViewController2.swift b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/ViewController2.swift
similarity index 100%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewFlowLayout2/ViewController2.swift
rename to bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/ViewController2.swift
diff --git a/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratch-Bridging-Header.h b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratch-Bridging-Header.h
new file mode 100644
index 000000000..1b2cb5d6d
--- /dev/null
+++ b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratch-Bridging-Header.h
@@ -0,0 +1,4 @@
+//
+//  Use this file to import your target's public headers that you would like to expose to Swift.
+//
+
diff --git a/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratch-Info.plist b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratch-Info.plist
new file mode 100644
index 000000000..b29ba46ea
--- /dev/null
+++ b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratch-Info.plist
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleDisplayName</key>
+	<string>${PRODUCT_NAME}</string>
+	<key>CFBundleExecutable</key>
+	<string>${EXECUTABLE_NAME}</string>
+	<key>CFBundleIdentifier</key>
+	<string>com.neuburg.matt.${PRODUCT_NAME:rfc1034identifier}</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>${PRODUCT_NAME}</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>1.0</string>
+	<key>LSRequiresIPhoneOS</key>
+	<true/>
+	<key>UIMainStoryboardFile</key>
+	<string>Main</string>
+	<key>UIRequiredDeviceCapabilities</key>
+	<array>
+		<string>armv7</string>
+	</array>
+	<key>UISupportedInterfaceOrientations</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+</dict>
+</plist>
diff --git a/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratch-Prefix.pch b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratch-Prefix.pch
new file mode 100644
index 000000000..82a2bb450
--- /dev/null
+++ b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/ch21p748collectionViewLayoutFromScratch-Prefix.pch
@@ -0,0 +1,16 @@
+//
+//  Prefix header
+//
+//  The contents of this file are implicitly included at the beginning of every source file.
+//
+
+#import <Availability.h>
+
+#ifndef __IPHONE_5_0
+#warning "This project uses features only available in iOS SDK 5.0 and later."
+#endif
+
+#ifdef __OBJC__
+    #import <UIKit/UIKit.h>
+    #import <Foundation/Foundation.h>
+#endif
diff --git a/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/en.lproj/InfoPlist.strings b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/en.lproj/InfoPlist.strings
new file mode 100644
index 000000000..477b28ff8
--- /dev/null
+++ b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/en.lproj/InfoPlist.strings
@@ -0,0 +1,2 @@
+/* Localized versions of Info.plist keys */
+
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new file mode 100644
index 0000000000000000000000000000000000000000..a71471708d5b5e0ed55e4911e191d19e7ee40c95
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diff --git a/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/main.m b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/main.m
new file mode 100644
index 000000000..85018cfe9
--- /dev/null
+++ b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/main.m
@@ -0,0 +1,18 @@
+//
+//  main.m
+//  ch21p748collectionViewFlowLayout2
+//
+//  Created by Matt Neuburg on 10/7/13.
+//  Copyright (c) 2013 Matt Neuburg. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+#import "AppDelegate.h"
+
+int main(int argc, char * argv[])
+{
+    @autoreleasepool {
+        return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
+    }
+}
diff --git a/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/states.txt b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/states.txt
new file mode 100644
index 000000000..ad6632e6c
--- /dev/null
+++ b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewFlowLayout2/states.txt
@@ -0,0 +1,50 @@
+Alabama
+Alaska
+Arizona
+Arkansas
+California
+Colorado
+Connecticut
+Delaware
+Florida
+Georgia
+Hawaii
+Idaho
+Illinois
+Indiana
+Iowa
+Kansas
+Kentucky
+Louisiana
+Maine
+Maryland
+Massachusetts
+Michigan
+Minnesota
+Mississippi
+Missouri
+Montana
+Nebraska
+Nevada
+New Hampshire
+New Jersey
+New Mexico
+New York
+North Carolina
+North Dakota
+Ohio
+Oklahoma
+Oregon
+Pennsylvania
+Rhode Island
+South Carolina
+South Dakota
+Tennessee
+Texas
+Utah
+Vermont
+Virginia
+Washington
+West Virginia
+Wisconsin
+Wyoming
\ No newline at end of file
diff --git a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewLayoutFromScratch.xcodeproj/project.pbxproj b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewLayoutFromScratch.xcodeproj/project.pbxproj
similarity index 94%
rename from bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewLayoutFromScratch.xcodeproj/project.pbxproj
rename to bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewLayoutFromScratch.xcodeproj/project.pbxproj
index 9913e816c..5546b2e24 100644
--- a/bk2ch08p467collectionViewLayoutFromScratch/ch21p748collectionViewLayoutFromScratch.xcodeproj/project.pbxproj
+++ b/bk2ch08p467collectionViewLayoutFromScratchSwift/ch21p748collectionViewLayoutFromScratch.xcodeproj/project.pbxproj
@@ -93,8 +93,6 @@
 		C9F1DE2E1803183800AE4AE5 /* AppDelegate.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = AppDelegate.h; sourceTree = "<group>"; };
 		C9F1DE2F1803183800AE4AE5 /* AppDelegate.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = AppDelegate.m; sourceTree = "<group>"; };
 		C9F1DE321803183800AE4AE5 /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = Base.lproj/Main.storyboard; sourceTree = "<group>"; };
-		C9F1DE341803183800AE4AE5 /* ViewController.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = ViewController.h; sourceTree = "<group>"; };
-		C9F1DE351803183800AE4AE5 /* ViewController.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = ViewController.m; sourceTree = "<group>"; };
 		C9F1DE371803183800AE4AE5 /* Images.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Images.xcassets; sourceTree = "<group>"; };
 		C9F1DE3E1803183800AE4AE5 /* XCTest.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = XCTest.framework; path = Library/Frameworks/XCTest.framework; sourceTree = DEVELOPER_DIR; };
 		C9F1DE551803190900AE4AE5 /* flag_alabama.gif */ = {isa = PBXFileReference; lastKnownFileType = image.gif; path = flag_alabama.gif; sourceTree = "<group>"; };
@@ -147,15 +145,7 @@
 		C9F1DE841803190900AE4AE5 /* flag_westvirginia.gif */ = {isa = PBXFileReference; lastKnownFileType = image.gif; path = flag_westvirginia.gif; sourceTree = "<group>"; };
 		C9F1DE851803190900AE4AE5 /* flag_wisconsin.gif */ = {isa = PBXFileReference; lastKnownFileType = image.gif; path = flag_wisconsin.gif; sourceTree = "<group>"; };
 		C9F1DE861803190900AE4AE5 /* flag_wyoming.gif */ = {isa = PBXFileReference; lastKnownFileType = image.gif; path = flag_wyoming.gif; sourceTree = "<group>"; };
-		C9F1DEBC18031C0400AE4AE5 /* Cell.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Cell.h; sourceTree = "<group>"; };
-		C9F1DEBD18031C0400AE4AE5 /* Cell.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = Cell.m; sourceTree = "<group>"; };
 		C9F1DEBF18031C5200AE4AE5 /* states.txt */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = states.txt; sourceTree = "<group>"; };
-		C9F1DEC118031C5F00AE4AE5 /* MyFlowLayout.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MyFlowLayout.h; sourceTree = "<group>"; };
-		C9F1DEC218031C5F00AE4AE5 /* MyFlowLayout.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = MyFlowLayout.m; sourceTree = "<group>"; };
-		C9F1DEC61803378200AE4AE5 /* MyLayout.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MyLayout.h; sourceTree = "<group>"; };
-		C9F1DEC71803378200AE4AE5 /* MyLayout.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = MyLayout.m; sourceTree = "<group>"; };
-		C9F1DEC91804942100AE4AE5 /* ViewController2.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ViewController2.h; sourceTree = "<group>"; };
-		C9F1DECA1804942100AE4AE5 /* ViewController2.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = ViewController2.m; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -206,21 +196,11 @@
 				C9F1DE2E1803183800AE4AE5 /* AppDelegate.h */,
 				C9F1DE2F1803183800AE4AE5 /* AppDelegate.m */,
 				C9F1DE311803183800AE4AE5 /* Main.storyboard */,
-				C9F1DE341803183800AE4AE5 /* ViewController.h */,
-				C9F1DE351803183800AE4AE5 /* ViewController.m */,
 				322E0C49198496510089C833 /* ViewController.swift */,
-				C9F1DEC91804942100AE4AE5 /* ViewController2.h */,
-				C9F1DECA1804942100AE4AE5 /* ViewController2.m */,
 				322E0C47198491580089C833 /* ViewController2.swift */,
-				C9F1DEBC18031C0400AE4AE5 /* Cell.h */,
-				C9F1DEBD18031C0400AE4AE5 /* Cell.m */,
 				322E0C4B198498760089C833 /* Cell.swift */,
 				32FB02BD19841FD5006889DD /* Cell.xib */,
-				C9F1DEC118031C5F00AE4AE5 /* MyFlowLayout.h */,
-				C9F1DEC218031C5F00AE4AE5 /* MyFlowLayout.m */,
 				32FB02C219842C00006889DD /* MyFlowLayout.swift */,
-				C9F1DEC61803378200AE4AE5 /* MyLayout.h */,
-				C9F1DEC71803378200AE4AE5 /* MyLayout.m */,
 				32FB02C01984218C006889DD /* MyLayout.swift */,
 				C9F1DEBF18031C5200AE4AE5 /* states.txt */,
 				C9F1DE54180318F800AE4AE5 /* Flags */,