Underscore.m + Asterism

Transcript

1. 1.

   robb@robb.is 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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   //

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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)); …
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    github.com/robb/Underscore.m github.com/robb/Asterism

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    thanks!