// objc 獲取類的的所有方法的名字
    unsigned int mCount;
    Method *mArr = class_copyMethodList([self class], &mCount);
    // 獲取方法的名字
    for (int i = 0; i < mCount; i++) {
        Method m = mArr[i];
        NSString *mName =  [NSString stringWithCString:sel_getName(method_getName(m)) encoding:NSUTF8StringEncoding] ;
        NSLog(@"類中方法的名字是:%@",mName);
    }
    free(mArr);
    
    // objc 獲取類的所有屬性名稱
    unsigned int pCount ;
    objc_property_t *properties = class_copyPropertyList([self class], &pCount);

    for (int i = 0;  i < pCount; i++) {
        objc_property_t property = properties[i];
        NSString *propertyName =  [NSString stringWithCString:property_getName(property) encoding:(NSUTF8StringEncoding)];
        NSLog(@"類中所有屬性的名字是:%@",propertyName);
    }
    free(properties);