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About DTFoundation

DTFoundation is a collection of utility methods and category extensions that Cocoanetics is standardizing on. This should evolve into a toolset of well-documented and -tested code to accelerate future development.

At a Glance

Contained are several category methods

  • NSArray+DTError - parsing array property lists with error reporting
  • NSData+Base64 - Matt Gallagher's base64 methods
  • NSData+DTCrypto - Cryptography methods for NSData
  • NSDictionary+DTError - parsing dictionary property lists with error reporting
  • NSMutableArray+DTMoving - moving multiple array elements to a new location
  • NSObject+DTRuntime - runtime hacking methods
  • NSString+DTFormatNumbers - formatting Numbers
  • NSString+DTUtilities - various utility methods for strings
  • NSString+DTPaths - working with paths
  • NSString+DTURLEncoding - URL encoding methods
  • NSString+DTUTI - string utility methods using UTIs
  • NSURL+DTUnshorten - unshorting of NSURLs
  • NSURL+DTAppLinks - getting direct-access URLs for an app's app store and review page
  • UIImage+DTFoundation - helpful methods for drawing images
  • UIView+DTFoundation - helpful methods for working with views

Other classes simplify working with specialized data

  • DTActionSheet - block-based additions for UIActionSheet
  • DTASN1Parser - a parser for ASN.1-encoded data (eg. Certificates)
  • DTAsyncFileDeleter - asynchronous non-blocking file/folder deletion
  • DTDownload - asynchronous file download with optional resume
  • DTDownloadCache - A file and image cache using DTDownload for downloading
  • DTExtendedFileAttributes - access and modify extended file attributes
  • DTHTMLParser - a libxml2-based HTML parser
  • DTPDFDocument - simplified wrapper to work with PDF documents
  • DTPieProgressIndicator - pie-shaped progress indicator
  • DTScripting - things to work with Objective-C script
  • DTSmartPagingScrollView - a page-based scroll view
  • DTVersion - parsing and comparing version numbers
  • DTZipArchive - uncompressing ZIP and GZ files


It is open source and covered by a standard BSD license. That means you have to mention Cocoanetics as the original author of this code. You can purchase a Non-Attribution-License from us.


Documentation can be browsed online or installed in your Xcode Organizer via the Atom Feed URL.


The DTFoundation.framework is using the "Fake Framework" template put together by Karl Stenerud. All categories employ Karl's LoadabeCategory hack to avoid having to use the -all_load linker flag. If your app does not use ARC yet (but DTFoundation does) then you also need the -fobjc-arc linker flag.

  1. Include the DTFoundation.framework in your project.
  2. Import the DTFoundation.h in your PCH file or include the individual header files where needed.
  3. Add -ObjC to "Other Linker Flags".