東京iPhone勉強会 #6 発表資料

2. 2

3. 3

4. 4

5. 5

6. 6

7. 7

8. 8

9. 9

10. 10

12. 12

13. 13

14. 14

15. 15

16. 16

17. 17

18. 18

19. 19

21. 21

22. 22

23. 23

24. 24

26. n = IO.read("count.txt") rescue "0"
open("count.txt","w") {|f| f.puts n.to_i + 1}
26

27. n = IO.read("count.txt") rescue "0" n = IO.read("count.txt") rescue "0"
open("count.txt","w") {|f| f.puts n.to_i + 1} open("count.txt","w") {|f| f.puts n.to_i + 1}
27

28. n = IO.read("count.txt") rescue "0"
open("count.txt","w") {|f| f.puts n.to_i + 1}
28

29. 29

30. 30

31. while (true)
begin
break if Dir.mkdir("lock.txt")
rescue
sleep(1)
end
end
n = IO.read("count.txt") rescue "0"
open("count.txt","w") {|f| f.puts n.to_i + 1}
Dir.rmdir("lock.txt")
31

32. lock(“a”) lock(“b”)
lock(“b”) lock(“a”)
unlock(“b”) unlock(“a”)
unlock(“a”) unlock(“b”)
32

34. 34

35. 35

36. 36

37. 37

38. - (void)countThread:(id)param{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
[pool release];
}
[NSThread detachNewThreadSelector:@selector(countThread:)
toTarget:self withObject:self];
NSLog(@"Thread started.");
38

39. 39

40. 40

41. - (int) maxOfArray:(int *)a count:(int)n {
static int max = 0;
for (int i = 0; i < n; i++) {
if (a[i] > max) max = a[i];
}
return max;
}
41

42. - (int)randomNumber {
static int rand = 7654321;
rand = (rand * 12345 + 678901) & 0x7fff;
return rand;
}
42

43. 43

44. NSMutableDictionary *threadLoacl =
[[NSTread currentThread] threadDictonary];
[threadLocal setObject:@”Test” forKey:@”mode”];
s = [threadLocal objectForKey:@”mode”]
44

45. @interface MyInt : NSObject {
int intValue;
}
@end
@implementation MyInt
-(int) getInt {
return intValue;
}
-(void) setOddInt:(int)i {
intValue = i;
intValue = (intValue >> 1) << 1;
}
@end
45

46. @interface MyString : NSObject {
NSMutableString *str;
}
@end
@implementation MyInt
-(MyString *) getString {
return str;
}
-(void) addString:(NSString *)s {
[str appendString:s];
}
@end
46

47. 47

48. 48

49. @interface MyPoint : NSObject {
GCPoint point;
}
@end
@implementation MyInt
-(GCPoint) getPoint {
return point;
}
-(void) setPoint:(GCPoint)p {
point = p;
}
@end
49

50. @interface MyString : NSObject {
NSString *string;
}
@property (nonatomic, retain) NSString *string;
@end
@implementation MyString
@synthesize string;
@end
50

51. 51

52. 52

54. 54

55. 55

57. 57

58. 58

59. 59

60. @interface CountOperation : NSOperation {
id delegate;
}
@implementation CountOperation
- (id)initWithDelegate:(id)aDelegate {
self = [super init];
if (self != nil) {
delegate = aDelegate;
}
return self;
}
- (void)main {
NSAutoreleasePool *pool = [NSAutoreleasePool new];
[pool release];
}
@end
queue = [[NSOperationQueue alloc] init];
CountOperation *op = [[[CountOperation alloc] initWithDelegate:self] autorelease];
[queue addOperation:op];
NSLog(@"Thread started.");
}
60

62. 62

63. 63

64. {|ary| ^(NSArray *ary) {
s = “” NSMutableString *s = [NSMutableString string];
for a in ary for (NSString *a in ary) {
s += a [s appendString:a];
end }
s return s;
} }
64

65. __block NSMutableString *s = [NSMutableString string];
^(NSArray *ary) {
for (NSString *a in ary) {
[s appendString:a];
}
}
65

66. - (NSArray *)sortedArrayUsingSelector:
(SEL)comparator
- (NSArray *)sortedArrayUsingComparator:
(NSComparator)cmptr
66

67. 67

68. 68

70. 70

72. 72