Underscore.m + Asterism

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[email protected] github.com/robb

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Let's talk about

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Let's talk about Objective-C

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Let's talk about Objective-C talk about

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[ ]

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transitionFromViewController: toViewController: duration: options: animations: completion:

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videoComposition: shouldContinueValidatingAfter FindingInvalidTrackIDInInstruction: layerInstruction: asset:

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predicateWithLeftExpression: rightExpression: modifier: type: helpMe: iAmTrappedInAMethodFactory: options:

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new Grapefruit(0, 10);

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[CHGrapefruit grapefruitWithSeeds:0 tastiness:10];

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duh!

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[NSDictionary dictionaryWithObjectsAndKeys:value, key, nil];

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@{ key: value }

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enumerateObjectsUsingBlock:

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enumerateKeysAndObjectsUsingBlock:

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each?

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map?

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reduce?

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ﬁlter?

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Underscore.m

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inspired by underscore.js

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not trying to turn Objective-C into JavaScript

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not trying to turn Objective-C into JavaScript though it looks kinda like it…

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DSL for data manipulation

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Underscore.wrap(array) .filter(^(id obj) { return [obj tastiness] > 8; }) .map(^(id obj) { return [obj juice]; }) .unwrap;

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wtf?

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@property USDictWrapper *(^map)(USMapBlock block);

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foo.method1().method2();

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// Nocilla stubRequest(@"GET", @"https://api.example.com") .withHeader(@"Accept", @"application/json");

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// Expecta expect(CocoaHeads).to.beFun();

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but

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- (NSDictionary *)us_map:(USMapBlock block);

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[[dictionary us_map:^(id key, id value) { return …; }] us_filter:^(id object) { return …; }];

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Check out BlocksKit

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DSL

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github.com/robb/Underscore.m

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Asterism

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Underscore.dictWrap(dictionary).map(block).unwrap; Underscore.arrayWrap(array).map(block).unwrap;

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Underscore.dictMap(dictionary, block); Underscore.arrayMap(array, block);

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Underscore.dictEach(dictionary, block); Underscore.arrayEach(array, block);

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Asterism

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__attribute__((overloadable))

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ASTEach(NSArray *array, void(^block)(id obj)); ASTEach(NSArray *array, void(^block)(id obj, NSUInteger idx)); ASTEach(NSSet *set, void(^block)(id obj)); …