_.m is a port of Underscore.js to Objective-C.
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_.m is a port of Underscore.js to Objective-C. It strives to provide the fullest feature set possible in a way that is familiar to JavaScript developers (despite the differences between JavaScript and Objective-C).

To help achieve this vision, _.m uses SubjectiveScript.m to bring JavaScript-like syntax and features into Objective-C, and QUnit.m to port unit tests from JavaScript to Objective-C. You should check them out, too!

Full documentation can be found on the _.m Website

A Quick Taster

You can use familiar Underscore.js functions:

N* result = (N*) _.detect(AI(1, 2, 3), ^B(N* num){ return num.I * 2 == 4; });
equal(result.I, 2, @"found the first '2' and broke the loop");

and you can even use chaining:

A* lyrics = AO(
  @"I'm a lumberjack and I'm okay",
  @"I sleep all night and I work all day",
  @"He's a lumberjack and he's okay",
  @"He sleeps all night and he works all day"
O* counts = (O*) __(lyrics)
  .map(^(NSS* line, ...) { return line.split(@""); })
  .flatten(/* REQUIRED */ false )
  .reduce(^(O* hash, N* l, ... /* KEY, LIST */) {
    N* value = (N*) hash.getOrAdd(l, ^{ return N.I(0); });
    hash.set(l, N.I(value.I+1));
    return hash;
}, O.new).value();
ok(counts.get(@"a").I == 16 && counts.get(@"e").I == 10, @"counted all the letters in the song");


Install From GitHub Source

  • Clone the _.m from GitHub
  • Add all the files from the Lib directory to your project
  • Clone the SubjectiveScript.m from GitHub
  • Add all the files from the Lib directory to your project

Install From CocoaPods

  • Install Ruby and CocoaPods
  • Configure a Podfile in the root directory of your XCode project. For example:
      platform :ios
      pod '_.m',                  '~> 0.1.1'
      pod 'SubjectiveScript.m',   '~> 0.1.1'
  • Install the pods from the Podfile 'pod install {YourProject}.xcodeproj'
  • Use the generated '{YourProject}.xcworkspace' file instead of '{YourProject}.xcodeproj'