std::mem_fun_t, std::mem_fun1_t, std::const_mem_fun_t, std::const_mem_fun1_t

C++

Language

Headers

Freestanding and hosted implementations

Named requirements

Language support library

Concepts library (C++20)

Diagnostics library

Utilities library

Strings library

Containers library

Algorithms library

Iterators library

Numerics library

Input/output library

Localizations library

Regular expressions library (C++11)

Atomic operations library (C++11)

Thread support library (C++11)

Filesystem library (C++17)

Technical Specifications

Utilities library

Type support (basic types, RTTI, type traits)
Dynamic memory management
Error handling
Program utilities
Variadic functions
Library feature-test macros
Date and time
Function objects
initializer_list (C++11)
bitset
hash (C++11)
integer_sequence (C++14)
Relational operators (deprecated)
rel_ops::operator!=rel_ops::operator>rel_ops::operator<=rel_ops::operator>=
Comparisons (C++20)
strong_order weak_order partial_order strong_equal weak_equal	strong_ordering weak_ordering partial_ordering strong_equality weak_equality	is_eqis_neqis_ltis_lteqis_gtis_gteq
common_comparison_category
Common vocabulary types
pair tuple (C++11) apply (C++17) make_from_tuple (C++17)	optional (C++17) any (C++17) variant (C++17)
Swap, forward and move
swap
exchange (C++14)
forward (C++11)
move (C++11)
move_if_noexcept (C++11)
Elementary string conversions
to_chars (C++17)
from_chars (C++17)
chars_format (C++17)
Type operations
declval (C++11)
as_const (C++17)

Function objects

Function wrappers function (C++11) mem_fn (C++11) bad_function_call (C++11)	Bind bind (C++11) is_bind_expression (C++11) is_placeholder (C++11) _1, _2, _3, ... (C++11)
Function invocation invoke (C++17) Identity function object identity (C++20)	Reference wrappers reference_wrapper (C++11) refcref (C++11)(C++11)
Operator wrappers
plus minus negate multiplies divides modulus logical_and logical_or logical_not	equal_to not_equal_to greater less greater_equal less_equal bit_and bit_or bit_xor bit_not (C++14)
Negators
not_fn (C++17)
Searchers
default_searcher (C++17)
boyer_moore_searcher (C++17)
boyer_moore_horspool_searcher (C++17)
Old binders and adaptors
unary_function (until C++17) binary_function (until C++17) ptr_fun (until C++17) pointer_to_unary_function (until C++17) pointer_to_binary_function (until C++17) mem_fun (until C++17) mem_fun_tmem_fun1_tconst_mem_fun_tconst_mem_fun1_t (until C++17)(until C++17)(until C++17)(until C++17) not1 (until C++20) not2 (until C++20)	binder1stbinder2nd (until C++17)(until C++17) bind1stbind2nd (until C++17)(until C++17) mem_fun_ref (until C++17) mem_fun_ref_tmem_fun1_ref_tconst_mem_fun_ref_tconst_mem_fun1_ref_t (until C++17)(until C++17)(until C++17)(until C++17) unary_negate (until C++20) binary_negate (until C++20)

template< class S, class T > class mem_fun_t : public unary_function<T*,S> { public: explicit mem_fun_t(S (T::*p)()); S operator()(T* p) const; };	(1)	(deprecated in C++11) (removed in C++17)
template< class S, class T > class const_mem_fun_t : public unary_function<const T*,S> { public: explicit const_mem_fun_t(S (T::*p)() const); S operator()(const T* p) const; };	(2)	(deprecated in C++11) (removed in C++17)
template< class S, class T, class Arg > class mem_fun1_t : public binary_function<T*,A,S> { public: explicit mem_fun1_t(S (T::*p)(A)); S operator()(T* p, A x) const; };	(3)	(deprecated in C++11) (removed in C++17)
template< class S, class T, class A > class const_mem_fun1_t : public binary_function<const T*,A,S> { public: explicit const_mem_fun1_t(S (T::*p)(A) const); S operator()(const T* p, A x) const; };	(4)	(deprecated in C++11) (removed in C++17)

Wrapper around a member function pointer. The class instance whose member function to call is passed as a pointer to the operator().

1) Wraps a non-const member function with no parameters.

2) Wraps a const member function with no parameters.

3) Wraps a non-const member function with a single parameter.

4) Wraps a const member function with a single parameter.

See also

mem_fun (deprecated in C++11)(removed in C++17)	creates a wrapper from a pointer to member function, callable with a pointer to object (function template)
mem_fun_ref_tmem_fun1_ref_tconst_mem_fun_ref_tconst_mem_fun1_ref_t (deprecated in C++11)(removed in C++17)	wrapper for a pointer to nullary or unary member function, callable with a reference to object (class template)