Objective-C Bootcamp

Transcript

1. Objective-C Bootcamp
2. “Objective-C!” “Objective-C!”
3. จ๏ (Syntax)
4. จ๏ (Syntax) •Cݴޠͱಉ͡
5. จ๏ (Syntax) •Cݴޠͱಉ͡
6. จ๏ (Syntax) •C / C++ ͱಉډՄೳ
7. จ๏ (Syntax) •C / C++ ͱಉډՄೳ •Ϋϥε •ϝιουݺͼग़͠
8. Ϋϥε
9. Ϋϥε class Foo { int bar; int add(int n) { bar += n; return bar; } };
10. Ϋϥε C/C++ͱಉډՄೳ = C++ͱҟͳΔ
11. Ϋϥε @interface Foo @end
12. Ϋϥε @interface Foo { int bar; } @end
13. Ϋϥε @interface Foo { int bar; } - (int)add:(int)n; @end
14. Ϋϥε @interface Foo { int bar; } - (int)add:(int)n; + (id)fooWithValue:(int)value; @end
15. Ϋϥε @implementation Foo @end
16. Ϋϥε @implementation Foo - (int)add:(int)n { bar += n; return bar; } @end
17. ϝιουݺͼग़͠ $foo->add(5);
18. ϝιουݺͼग़͠ foo.add(5);
19. ϝιουݺͼग़͠ C/C++ͱಉډՄೳ = CͱҟͳΔ
20. ϝιουݺͼग़͠ [foo add:5];
21. ϝιουݺͼग़͠ [[[Foo alloc] init] add:5];
22. ϝιουݺͼग़͠ $foo = null; $foo->bar();
23. ϝιουݺͼग़͠ $foo = null; $foo->bar();
24. ϝιουݺͼग़͠ id foo = nil; [foo bar];
25. ϝιουݺͼग़͠ id foo = nil; [foo bar]; ʘ ฏؾ ʗ
26. ϝιουݺͼग़͠ [foo bar];
27. ϝιουݺͼग़͠ [foo bar]; objc_msgSend(foo, @selector(bar));
28. ϝιουݺͼग़͠ objc_msgSend Objective-C Message Send ϝοηʔδૹ৴
29. ϝοηʔδૹ৴ ϝιουݺͼग़͠ •ͲͷΦϒδΣΫτʹ •ͲΜͳϝοηʔδΛૹͬͯ΋͍͍
30. [duck quack]; [dog quack]; [cat performSelector: NSSelectorFromString(@”quack”)];
31. ϝοηʔδૹ৴ ϝιουݺͼग़͠ •ͲͷΦϒδΣΫτʹ •ͲΜͳϝοηʔδΛૹͬͯ΋͍͍ ɹɹɹɹ Late binding
32. ϝοηʔδૹ৴ ϝιουݺͼग़͠ Duck Typing (Late binding) ΞώϧͷΑ͏ʹ໐͘ͷͳΒɺ ͦΕ͸ΞώϧͰ͋Δ
33. ϝοηʔδૹ৴ ϝιουݺͼग़͠ Duck Typing (Late binding) ΞώϧͷΑ͏ʹ໐͘ͷͳΒɺ ͦΕ͸ΞώϧͰ͋Δ
34. Objective-C • Early binding • Cؔ਺ݺग़ / C++ϝιουݺग़ • Late binding • Objective-C ϝοηʔδૹ৴
35. Objective-C • Early binding • Cؔ਺ݺग़ / C++ϝιουݺग़ • ߴ଎ • Late binding • Objective-C ϝοηʔδૹ৴ • ௿଎
36. Ϧςϥϧ
37. Ϧςϥϧ จࣈྻ @”Hello World”
38. Ϧςϥϧ ”Hello World” จࣈྻ @”Hello World” C / C++ ͱಉډՄೳ
39. Ϧςϥϧ จࣈྻ @”Hello World” [NSString stringWithUTF8String:”Hello World”]
40. Ϧςϥϧ ਺஋ @15
41. Ϧςϥϧ ਺஋ @15 [NSNumber numberWithInt:15]
42. Ϧςϥϧ ഑ྻ @[a, b, c]
43. Ϧςϥϧ ഑ྻ @[a, b, c] [NSArray arrayWithObjects:a, b, c, nil]
44. Ϧςϥϧ σΟΫγϣφϦ @{k1:v1, k2:v2, k3:v3}
45. Ϧςϥϧ σΟΫγϣφϦ @{k1:v1, k2:v2, k3:v3} NSDictionary
46. ϝϞϦ؅ཧ
47. ϝϞϦ؅ཧ ΦϒδΣΫτͷੜ੒ํ๏
48. ϝϞϦ؅ཧ NSString *string = [NSString stringWithFormat:@”Hello %d”, i];
49. ϝϞϦ؅ཧ NSObject *obj = [[NSObject alloc] init];
50. ϝϞϦ؅ཧ id obj = [[NSObject alloc] init];
51. ϝϞϦ؅ཧ ΦϒδΣΫτͷഁغํ๏
52. ϝϞϦ؅ཧ ͳ͠!
53. ϝϞϦ؅ཧ NSObject *obj = [[NSObject alloc] init]; obj = nil;
54. ϝϞϦ؅ཧ • ࢀরΧ΢ϯτํࣜ
64. ϝϞϦ؅ཧ • ࢀরΧ΢ϯτํࣜ • ੲ͸खಈͰ΍ͬͯͨ NSObject *obj = [[NSObject alloc] init]; [obj release];
65. ϝϞϦ؅ཧ • ࢀরΧ΢ϯτํࣜ • ੲ͸खಈͰ΍ͬͯͨ • ࠓ͸ίϯύΠϥ͕΍ͬͯ͘ΕΔ! NSObject *obj = [[NSObject alloc] init]; [obj release];
66. ϝϞϦ؅ཧ • ࢀরΧ΢ϯτํࣜ • ίϯύΠϥ͕΍ͬͯ͘ΕΔ • Automatic Reference Counting • ུͯ͠ARC
67. ϝϞϦ؅ཧ GCͱҧ͏ͷ?
68. ϝϞϦ؅ཧ • GC • ͍Ζ͍Ζํࣜ͸͋Δ͕ɺ جຊతʹϥϯλΠϜίετ͕͔͔Δ • ࢀরΧ΢ϯτํࣜ • جຊతʹϥϯλΠϜίετ͸͔͔Βͳ͍ • ॥؀ࢀর໰୊
70. ॥؀ࢀরճආํ๏
71. ॥؀ࢀরճආํ๏ __weak
72. __weak id __weak obj = [[NSObject alloc] init];
73. __weak id __weak obj = [[NSObject alloc] init]; NSLog(@”obj = %@”, obj);
74. __weak id __weak obj = [[NSObject alloc] init]; NSLog(@”obj = %@”, obj); ݁Ռ: (null)
76. εϨου
77. εϨου Grand Central Dispatch Blocks
78. εϨου dispatch_queue_t q = dispatch_get_global_queue(0, 0); dispatch_async(q, ^{ ʘ εϨου ʗ });
79. εϨου dispatch_queue_t q = dispatch_get_global_queue(0, 0); dispatch_async(q, ^{ ʘ εϨου ʗ });
80. εϨου dispatch_queue_t q = dispatch_get_global_queue(0, 0); dispatch_async(q, ^{ ʘ εϨου ʗ });
81. εϨου dispatch_async(q, ^{ εϨου্Ͱ࡞ۀ dispatch_async(dispatch_get_main_queue(),^{ ʘϝΠϯεϨουʗ }); });
82. εϨου • Grand Central Dispatch (GCD) • OS X kernelͷGCD༻εϨουΛ࢖͏ͷ Ͱܰྔ • API͕؆୯ • LinuxͰ΋࢖͑ΔΑ!
83. εϨου • Blocks • lambda, closure • CoffeeScriptͳΒ ->, => • C#ͳΒ ()=> • PHP5.3Ҏ߱ function(){} • LinuxͰ΋࢖͑ΔΑ!
85. “AndroidͰ΋Objective-CͳΜ͡Όʔ!” “Objective-CͳΜ͡Όʔ!” ͓ΘΓ
86. ຊ