TWISt-shout-2017-03-13.md

TWISt-shout Newsletter 2017-03-13

This Week In Swift for the week of 2017-03-06 to 2017-03-12

Existential Question of the Week

• Proper Way to make Errors in Swift 3

##Code Updates

• swift:179 - Slava Pestov (27), Doug Gregor (20), Michael Gottesman (16)
• swift-compiler-rt:1 - Erik Pilkington (1)
• swift-corelibs-foundation:9 - Sergey Minakov (2), John Holdsworth (2), Ian Partridge (1)
• swift-corelibs-libdispatch:3 - Kim Topley (3)
• swift-package-manager:26 - Ankit Aggarwal (21), Joe Heck (4), Bouke Haarsma (1)
• swift-protobuf:28 - Thomas Van Lenten (13), Tim Kientzle (8), Chris Burrows (4)
• swift-clang:9 - Argyrios Kyrtzidis (4), Alex Lorenz (2), Aleksei Sidorin (1)
• swift-llvm:32 - Tim Northover (13), Ahmed Bougacha (8), Hans Wennborg (5)
• swift-evolution:3 - Ankit Aggarwal (1), Constantino Tsarouhas (1), Rick Ballard (1)

###swift

• Pull Request #7870 - FloatingPoint should imply Hashable

• SR-4166 - Error compiling stdlib's Stubs.cpp for ARM

• Pull Request #7924 - mangling: efficient mangling of repeated substitutions

• CodeCompletion: Delete expr type state after getting expr completions

• Foundation: Remove @_silgen thunks and replace them with shims instead

• Pull Request #7823 - stdlib: Adding a deprecated version of flatMap to warn misuses

• Pull Request #7907 - ClangImporter: Don't crash when a bad override affects NSErrors

• AST: Introduce GenericSignature::getConformanceAccessPath()

• SR-3352 - Driver: Warn on and ignore -embed-bitcode when not generating object files

• SR-4171 - Allow "redeclaring" an initializer with non-overlapping availability

###swift-corelibs

Changes in Foundation:

• NSCFBoolean - Account for kCFBooleanTrue and kCFBooleanFalse being present in bridged payloads
• NSCoder - Account for kCFBooleanTrue and kCFBooleanFalse being present in bridged payloads
• NSData - Slight refinement?
• NSJSONSerialization - Implementing jsonObject with streams api of NSJSONSerialization.
• NSKeyedArchiver - Merge pull request #902 from naithar/defer-usage; Account for kCFBooleanTrue and kCFBooleanFalse being present in bridged payloads
• NSKeyedUnarchiver - Merge pull request #902 from naithar/defer-usage; Account for kCFBooleanTrue and kCFBooleanFalse being present in bridged payloads
• NSNumber - Account for kCFBooleanTrue and kCFBooleanFalse being present in bridged payloads
• NSURL - Change NSURL 'checkResourceIsReachableAndReturnError' to 'checkResourceIsReachable' with throw as Linux does not support Autoreleasing pointers
• NSURLSessionTask - [URLSession]Fix for a timeout bug(SR-2681)
• NSUUID - Fix for memory leak in NSUUID
• URL - Change NSURL 'checkResourceIsReachableAndReturnError' to 'checkResourceIsReachable' with throw as Linux does not support Autoreleasing pointers

##Server Dev

• Remote Swift on Server Developer Opportunity

• Next HTTP stream meeting of the Server API

##Evolution

• Very limited scope for access control/(sub)modules in Swift 4

• Additive proposals

###Proposals Up For Review

• SE-0158 (Mar 13) - Package Manager Manifest API Redesign

###Draft Proposals

• Normalize Enum Case Representation (rev. 2)

• Introducing Unwrappable protocol

• Remove support for final in protocol extensions

• Add a clamp function to Algorithm.swift

• Fix ExpressibleByStringInterpolation

###Cocktail Chatter

• Swift null safety questions

• Here are some Swift platforms you may not have heard of:

  • Silver
  • ShiftJS