In C++, you can check if a class has a method using the std::is_member_function_pointer type trait.
Here is an example:
#include
#include
class MyClass {
public:
void myMethod() {}
};
int main() {
if(std::is_member_function_pointer::value) {
std::cout << "MyClass has myMethod." << std::endl;
} else {
std::cout << "MyClass does not have myMethod." << std::endl;
}
return 0;
}
In the example above, std::is_member_function_pointer is used to check if MyClass has a method called myMethod. If the class does have the method, the program prints "MyClass has myMethod.". If it doesn't, it prints "MyClass does not have myMethod.".
Another example:
#include
#include
class MyClass {
public:
int myInt;
};
int main() {
if(std::is_member_function_pointer::value) {
std::cout << "MyClass has myInt method." << std::endl;
} else {
std::cout << "MyClass does not have myInt method." << std::endl;
}
return 0;
}
In this example, std::is_member_function_pointer is used to check if MyClass has a method called myInt. Since myInt is a member variable and not a method, the program prints "MyClass does not have myInt method.".