C++ : std::mem_fun

Say you have a class

class MyClass {
public:
int DoSomething(){
}
};

now say you have

std::vector classes;

you can use something like this

for_each(classes.begin(), classes.end(), &DoSomething);

where DoSomething is

int DoSomething(MyClass& e){
d.DoSomething();
}


to call the member function DoSomething rather than the wrapper function use function calls like these

for_each(classes.begin(), classes.end(), mem_fun_ref(&MyClass::DoSomething));

if the classes vector was defined something like this

vector classes

then you would use something like this

for_each(classes.begin(), classes.end(), mem_fun(&MyClass::DoSomething));