NSMutableDictionary的别样用法

#import <Foundation/Foundation.h>

int main(int argc, const char * argv[]) {
@autoreleasepool {
NSMutableDictionary *dict=[[NSMutableDictionary alloc]init];
[dict setObject:@"1" forKey:@"one"];
dict[@"dc"]=@{@"two":@"2",@"three":@"3"};
NSLog(@"dict:%@",dict);
}
return 0;
}
//打印结果为:dict:{
dc =     {
three = 3;
two = 2;
};
one = 1;
}