Today I released two new open source projects: a tiny one, DejalUtilities, and a significantly larger one, DejalFoundationCategories.

DejalFoundationCategories is a collection of Foundation-level categories, to add useful methods to classes like NSArray, NSDictionary, NSString, and others. They work on both OS X and iOS, and include:

• NSArray+Dejal: 30+ methods extending NSArray and NSMutableArray, including object matching, reversal, sorting, deep copying, adding and removing.
• NSAttributedString+Dejal: 10+ methods extending NSAttributedString and NSMutableAttributedString, including convenience initializers, RTF and font methods.
• NSData+Dejal: A couple of methods to make archiving and unarchiving objects slightly more convenient.
• NSDate+Dejal: 50+ methods extending NSDate, including convenience initializers, handy date component properties and calculators, JSON date support, string formatting, and relative date output.
• NSDictionary+Dejal: 25+ methods extending NSDictionary and NSMutableDictionary, including object matching, scalar support, deep copying, and more.
• NSFileManager+Dejal: 15+ methods extending NSFileManager, including convenient file attributes, file renaming, and path building.
• NSObject+Dejal: 15+ methods extending the NSObject base class, including key-value conveniences, “equivalent” comparisons, and performSelector methods.
• NSString+Dejal: 80+ methods extending NSString and NSMutableString, including scalar value formatting, contains evaluation, comparisons, substring and range utilities, reformatting, checksum and encoding utilities, internet utilities, file path methods, and appending and replacing methods.
• NSUserDefaults+Dejal: 15+ methods extending NSUserDefaults, including support for default values, sanitizing values, time intervals, factory settings, and copying preferences.

DejalUtilities is a single header file with some useful #define macros and static functions, also for both OS X and iOS:

• Adds DejalClassAvailable() and DejalClassSelectorAvailable() macros, to help determine available APIs.
• Adds DejalIntervalFromMinutes(), DejalIntervalFromDays(), DejalMinutesFromInterval(), DejalMonthsFromInterval(), and similar macros, to convert seconds to and from other units.
• Adds DEJAL_FILE_NAME and DEJAL_COMPILE_DATE_TIME macros, to help with debug information.
• Adds a DejalWeakSelf macro to easily make a weak representation of self for use with blocks.
• Plus several other handy macros and inline functions.

You can get the code and more information from the Dejal Open Source page.

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