Underscore.m + Asterism

My talk on Underscore.m and Asterism for CocoaHeads Berlin

Transcript

1. robb@robb.is github.com/robb
2. Let's talk about
3. Let's talk about Objective-C
4. Let's talk about Objective-C talk about
5. [ ]
6. transitionFromViewController: toViewController: duration: options: animations: completion:
7. videoComposition: shouldContinueValidatingAfter FindingInvalidTrackIDInInstruction: layerInstruction: asset:
8. predicateWithLeftExpression: rightExpression: modifier: type: helpMe: iAmTrappedInAMethodFactory: options:
9. //
10. new Grapefruit(0, 10);
11. [CHGrapefruit grapefruitWithSeeds:0 tastiness:10];
12. duh!
13. [NSDictionary dictionaryWithObjectsAndKeys:value, key, nil];
14. @{ key: value }
15. enumerateObjectsUsingBlock:
16. enumerateKeysAndObjectsUsingBlock:
17. each?
18. map?
19. reduce?
20. filter?
21. Underscore.m
22. inspired by underscore.js
23. not trying to turn Objective-C into JavaScript
24. not trying to turn Objective-C into JavaScript though it looks kinda like it…
25. DSL for data manipulation
26. Underscore.wrap(array) .filter(^(id obj) { return [obj tastiness] > 8; }) .map(^(id obj) { return [obj juice]; }) .unwrap;
27. wtf?
28. @property USDictWrapper *(^map)(USMapBlock block);
29. foo.method1().method2();
30. // Nocilla stubRequest(@"GET", @"https://api.example.com") .withHeader(@"Accept", @"application/json");
31. // Expecta expect(CocoaHeads).to.beFun();
32. but
33. - (NSDictionary *)us_map:(USMapBlock block);
34. [[dictionary us_map:^(id key, id value) { return …; }] us_filter:^(id object) { return …; }];
35. Check out BlocksKit
36. DSL
37. github.com/robb/Underscore.m
38. Asterism
39. Underscore.dictWrap(dictionary).map(block).unwrap; Underscore.arrayWrap(array).map(block).unwrap;
40. Underscore.dictMap(dictionary, block); Underscore.arrayMap(array, block);
41. Underscore.dictEach(dictionary, block); Underscore.arrayEach(array, block);
42. Asterism
43. __attribute__((overloadable))
44. ASTEach(NSArray *array, void(^block)(id obj)); ASTEach(NSArray *array, void(^block)(id obj, NSUInteger idx)); ASTEach(NSSet *set, void(^block)(id obj)); …
45. github.com/robb/Underscore.m github.com/robb/Asterism
46. thanks!