std::mem_fun
< cpp | utility | functional
Defined in header <functional>
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template< class Res, class T > std::mem_fun_t<Res,T> mem_fun( Res (T::*f)() ); |
(1) | (deprecated in C++11) (removed in C++17) |
template< class Res, class T > std::const_mem_fun_t<Res,T> mem_fun( Res (T::*f)() ); |
(1) | (deprecated in C++11) (removed in C++17) |
template< class Res, class T, class Arg > std::mem_fun1_t<Res,T,Arg> mem_fun( Res (T::*f)(Arg) ); |
(2) | (deprecated in C++11) (removed in C++17) |
template< class Res, class T, class Arg > std::const_mem_fun1_t<Res,T,Arg> mem_fun( S (T::*f)(Arg) ); |
(2) | (deprecated in C++11) (removed in C++17) |
Creates a member function wrapper object, deducing the target type from the template arguments. The wrapper object expects a pointer to an object of type T
as the first parameter to its operator().
This function and the related types were deprecated in C++11 and removed in C++17 in favor of the more general std::mem_fn and std::bind, both of which create callable adapter-compatible function objects from member functions.
Parameters
f | - | pointer to a member function to create a wrapper for |
Return value
A function object wrapping f
.
Exceptions
(none)
Notes
The difference between std::mem_fun and std::mem_fun_ref is that the former produces an function wrapper that expects a pointer to an object, whereas the latter -- a reference.
Example
This section is incomplete Reason: no example |
See also
(deprecated in C++11)(removed in C++17) |
creates a wrapper from a pointer to member function, callable with a reference to object (function template) |