Function objects

From Cppreference

< cpp | utility

Jump to: navigation, search

C++ Standard Library

Language
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)

Utilities library

Function objects

Airthmetic operations

plus

minus

multiplies

divides

modulus

negates

Comparisons

equal_to

not_equal_to

greater

less

greater_equal

less_equal

Logical operations

logical_and

logical_or

logical_not

Bitwise operations

bit_and

bit_or

bit_xor

Negators

unary_negate

binary_negate

not1

not2

Bind

bind (C++11)

mem_fn (C++11)

is_bind_expression (C++11)

is_placeholder (C++11)

placeholders (C++11)

Polymorphic function wrappers

bad_function_call (C++11)

function (C++11)

A function object is any object for which the function call operator is defined.

Contents

1 Function objects
2 Bind
- 2.1 Polymorphic function wrappers
- 2.2 Reference wrappers
3 Deprecated in C++11

Function objects

Arithmetic operations

function object implementing x + y
(class template)

function object implementing x - y
(class template)

function object implementing x * y
(class template)

function object implementing x / y
(class template)

function object implementing x % y
(class template)

function object implementing -x
(class template)

Comparisons

function object implementing x == y
(class template)

function object implementing x != y
(class template)

function object implementing x > y
(class template)

function object implementing x < y
(class template)

greater_equal

function object implementing x >= y
(class template)

function object implementing x <= y
(class template)

Logical operations

function object implementing x && y
(class template)

function object implementing x || y
(class template)

function object implementing !x
(class template)

Bitwise operations

function object implementing x & y
(class template)

function object implementing x | y
(class template)

function object implementing x ^ y
(class template)

Negators

wrapper function object returning the complement of the unary predicate it holds
(class template)

binary_negate

wrapper function object returning the complement of the binary predicate it holds
(class template)

constructs custom unary_negate object
(function template)

constructs custom binary_negate object
(function template)

Bind

bind (C++11)

binds one or more arguments to a function object
(function template)

is_bind_expression (C++11)

indicates that an object is std::bind expression or can be used as one
(class template)

is_placeholder (C++11)

indicates that an object is a standard placeholder or can be used as one
(class template)

Defined in namespace std::placeholders

_1, _2, _3, _4, ... (C++11)

placeholders for the unbound arguments in a std::bind expression
(constant)

Polymorphic function wrappers

mem_fn (C++11)

binds an object to a pointer to its member function to form independent function object
(function template)

function (C++11)

wraps callable object of any type with specified function call signature
(class template)

bad_function_call (C++11)

the exception thrown when invoking an empty std::function
(class)

Reference wrappers

reference_wrapper (C++11)

CopyConstructible and CopyAssignable reference wrapper
(class template)

ref (C++11)

creates a reference_wrapper of type, deduced from its argument
(function template)

cref (C++11)

creates a reference_wrapper to const, of type, deduced from its argument
(function template)

Deprecated in C++11

Base

unary_function (deprecated)

adaptor-compatible unary function base class
(class template)

binary_function (deprecated)

adaptor-compatible binary function base class
(class template)

Binders

binder1st (deprecated)

function object holding a binary function and its first argument
(class template)

binder2nd (deprecated)

function object holding a binary function and its second argument
(class template)

bind1st (deprecated)

binds the first argument to a binary function (constructs a binder1st object)
(function template)

bind2nd (deprecated)

binds the second argument to a binary function (constructs a binder2nd object)
(function template)

Function adaptors

pointer_to_unary_function (deprecated)

adaptor-compatible wrapper for a pointer to unary function
(class template)

pointer_to_binary_function (deprecated)

adaptor-compatible wrapper for a pointer to binary function
(class template)

ptr_fun (deprecated)

creates an adaptor-compatible function object wrapper from a pointer to function
(function template)

mem_fun_t (deprecated)

wrapper for a pointer to nullary member function, callable with a pointer to object
(class template)

const_mem_fun_t (deprecated)

wrapper for a pointer to nullary const member function, callable with a pointer to object
(class template)

mem_fun1_t (deprecated)

wrapper for a pointer to unary member function, callable with a pointer to object
(class template)

const_mem_fun1_t (deprecated)

wrapper for a pointer to unary const member function, callable with a pointer to object
(class template)

mem_fun (deprecated)

creates a wrapper from a pointer to member function, callable with a pointer to object
(function template)

mem_fun_ref_t (deprecated)

wapper for a pointer to nullary member function, callable with a reference to object
(class template)

const_mem_fun_ref_t (deprecated)

wapper for a pointer to nullary const member function, callable with a reference to object
(class template)

mem_fun1_ref_t (deprecated)

wrapper for a pointer to unary member function, callable with a reference to object
(class template)

const_mem_fun1_ref_t (deprecated)

wrapper for a pointer to unary const member function, callable with a reference to object
(class template)

mem_fun_ref (deprecated)

creates a wrapper from a pointer to member function, callable with a reference to object
(function template)

Retrieved from "http://en.cppreference.com/w/cpp/utility/functional"