思路:将所有NSFoundation中的类型记录到一个数组中,然后通过数组的

containsObject:方法去判断所要判断的类型是否包含在此数组中.

简单代码如下:

+ (BOOL)isClassFromFoundation:(Class)c {

    NSArray* foundationClasses = @[@"NSObject", @"NSNumber",@"NSArray",@"NSMutableArray",@"NSData",@"NSMutableData",@"NSDate",@"NSDictionary",@"NSMutableDictionary",@"NSString",@"NSMutableString"];

    //判断c是否在foundationClasses数组中

    return [foundationClasses containsObject:NSStringFromClass(c)];

}