mem_fun_ref_t Class
An adapter class that allows a non_const member function that takes no arguments to be called as a unary function object when initialized with a reference argument.
template<class Result, class Type>
class mem_fun_ref_t : public unary_function<Type, Result> {
explicit mem_fun_ref_t(
Result ( Type::*_Pm )( )
);
Result operator()( Type& _Left ) const;
};
Parameters
_Pm
A pointer to the member function of class Type to be converted to a function object._Left
The object that the _Pm member function is called on.
Return Value
An adaptable unary function.
Remarks
The template class stores a copy of _Pm, which must be a pointer to a member function of class Type, in a private member object. It defines its member function operator() as returning (_Left.* _Pm)( ).
Example
The constructor of mem_fun_ref_t is not usually used directly; the helper function mem_fun_ref is used to adapt member functions. See mem_fun_ref for an example of how to use member function adaptors.
Requirements
Header: <functional>
Namespace: std