NSString *test1 = @"test";
NSMutableDictionary *test2 = [[NSMutableDictionary alloc]initWithObjectsAndKeys:@"v1", @"k1", nil];
NSLog(@"test1:%@, 类型:%@, test2:%@, 类型:%@, [test2 isKindOfClass:[NSDictionary class]]:%d", test1, NSStringFromClass([test1 class]), test2, NSStringFromClass([test2 class]), [test2 isKindOfClass:[NSDictionary class]]);
打印日志:
2019-01-09 16:58:55.229684+0800 CloudGateWay[15100:674725] test1:test, 类型:__NSCFConstantString, test2:{
k1 = v1;
}, 类型:__NSDictionaryM, [test2 isKindOfClass:[NSDictionary class]]:1