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An adapter class that allows a
const member function that takes a single argument to be called as a binary function object when initialized with a pointer argument.
template<class Result, class Type, class Arg>
: public binary_function<const Type *, Arg, Result>
explicit const_mem_fun1_t( Result ( Type::* _Pm )( Arg ) const );
const Type* _Pleft,
A pointer to the member function of class
Type to be converted to a function object.
const object that the _Pm member function is called on.
The argument that is being given to
An adaptable binary function.
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 ( _Pleft->* Pm)( Right) const.
The constructor of
const_mem_fun1_t is not usually used directly; the helper function mem_fun is used to adapt member functions. See mem_fun for an example of how to use member function adaptors.