苹果给objective-C一种新写法
比如
NSNumber * number = [NSNumber numberWithInt:1];
NSArray * array = [NSArray arrayWithObjects:@"one", @"two", nil];
NSDictionary * dict = [NSDictionary dictionaryWithObjectsAndKeys:@"value1", @"key1", @"value2", @"key2", nil];
可以用
NSNumber * number = @1;
NSArray * array = @[@"one", @"two"];
NSDictionary * dict = @{@"key1":@"value1", @"key2":@"value2"};
NSMutableArray *m_array = [@[] mutableCopy];
NSMutableDictionary *m_dict = [@{} mutableCopy];
IOS数组、字典新写法——@[]、@{}
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转载自lichangjielong.iteye.com/blog/2017016
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