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NSArray NSSet NSDictionary 元素取出方法
NSArray *array = @[@"123",@"12333333",@"楼主傻逼",@"LZSB",@"顶",@"楼上都是傻逼",@"土豪我们做朋友吧",@"回复LS 滚"];
//for循环
for(int i=0;
i<[array count];
i++)
NSLog(@"%@",[array objectAtIndex:i]);
//for in 快速枚举
for(NSString *str in array)
NSLog(@"%@",str);
//迭代
NSEnumerator*enumer = [array objectEnumerator];
NSString *strnext =nil;
while((strnext = enumer.nextObject))
{
NSLog(@"%@",strnext);
}
//blocks 枚举
[array enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
NSLog(@"%@",obj);
}];
NSDictionary *dic = [NSDictionary dictionaryWithObjectsAndKeys:@"Val_1",@"Key_1",@"Val_2",@"Key_2",nil];
//forNSArray *keysArray = [dic allKeys];
for(int i = 0 ;
i< [dic count];
i++)
{
NSLog(@"%@",[dic objectForKey:[keysArray objectAtIndex:i]]);
}//for in
for(NSString *key in keysArray)
NSLog(@"%@",[dic objectForKey:key]);
//Enumerator
NSEnumerator *enumerator = [dic keyEnumerator];
NSString *keyEnum = nil;
while((keyEnum = enumerator.nextObject))
NSLog(@"%@",[dic objectForKey:keyEnum]);
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