Objective-C 宏检测变量是否为原始变量

使用 Objective-C 宏检测变量是否为原始变量

objective-c
#define IS_PRIMITIVE(var) (__builtin_types_compatible_p(__typeof__(var), int) || \
                            __builtin_types_compatible_p(__typeof__(var), float) || \
                            __builtin_types_compatible_p(__typeof__(var), char))
int main() {
    int num = 10;
    float pi = 3.14;
    NSString *name = @"John";
    if (IS_PRIMITIVE(num)) {
        NSLog(@"num is a primitive variable");
    } else {
        NSLog(@"num is not a primitive variable");
    }
    if (IS_PRIMITIVE(pi)) {
        NSLog(@"pi is a primitive variable");
    } else {
        NSLog(@"pi is not a primitive variable");
    }
    if (IS_PRIMITIVE(name)) {
        NSLog(@"name is a primitive variable");
    } else {
        NSLog(@"name is not a primitive variable");
    }
    return 0;
}