iOS如何在循环提高内存管理效率
经过测试，1，2，3的写法效果是一模一样的，4的写法最糟糕
补充一下：创建一个数组，把animal添加到数组，然后查看内存的变化，效果令人大吃一惊
笔者苦逼的使用第一种方法
1 #import <Foundation/Foundation.h>
2
3 @interface Animal : NSObject
4 {
5 NSString *_name;
6 NSInteger _age;
7 }
8
9 @property (nonatomic,copy) NSString *name;
10 @property (nonatomic,assign) NSInteger age;
11
12 @end
13
14 @implementation Animal
15
16 - (void)dealloc
17 {
18 self.name = nil;
19 [super dealloc];
20 }
21
22 @synthesize name = _name;
23 @synthesize age = _age;
24
25
26 @end
1、
1 NSUInteger i = 0;
2 while (i<1000000)
3 {
4 Animal *animal = [Animal new];
5 [animal release];
6 i++;
7 }
2、
1 NSUInteger i = 0;
2 while (i<1000000)
3 {
4 NSAutoreleasePool *loopPool = [[NSAutoreleasePool alloc] init];
5 Animal *animal = [[Animal new] autorelease];
6 [loopPool release];
7 i++;
8 }
3、使用ARC
1 NSUInteger i = 0;
2 while (i<1000000)
3 {
4 Animal *animal = [Animal new];
5 i++;
6 }
4、加不加pool效果一样
1 NSUInteger i = 0;
2 NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
3 while (i<1000000)
4 {
5 Animal *animal = [[Animal new] autorelease];
6 i++;
7 }
8 [pool release];
