Namespaces
Variants
Views
Actions

std::plus

From cppreference.com
< cpp‎ | utility‎ | functional
Revision as of 20:15, 31 May 2013 by P12bot (Talk | contribs)

 
 
Utilities library
General utilities
Relational operators (deprecated in C++20)
 
Function objects
Function invocation
(C++17)(C++23)
Identity function object
(C++20)
Transparent operator wrappers
(C++14)
(C++14)
(C++14)
(C++14)  
(C++14)
(C++14)
(C++14)
(C++14)
(C++14)
(C++14)
(C++14)
(C++14)
(C++14)

Old binders and adaptors
(until C++17*)
(until C++17*)
(until C++17*)
(until C++17*)  
(until C++17*)
(until C++17*)(until C++17*)(until C++17*)(until C++17*)
(until C++20*)
(until C++20*)
(until C++17*)(until C++17*)
(until C++17*)(until C++17*)

(until C++17*)
(until C++17*)(until C++17*)(until C++17*)(until C++17*)
(until C++20*)
(until C++20*)
 
Defined in header <functional>
template< class T >
struct plus;

Function object for performing addition. Effectively calls operator+ on two instances of type T.

Contents

Member types

Type Definition
result_type T
first_argument_type T
second_argument_type T

Member functions

operator()
returns the sum of two arguments
(public member function) [edit]

std::plus::operator()

T operator()( const T& lhs, const T& rhs ) const;

Returns the sum of lhs and rhs.

Parameters

lhs, rhs - values to sum

Return value

The result of lhs + rhs.

Exceptions

(none)

Possible implementation

T operator()(const T &lhs, const T &rhs) const 
{
    return lhs + rhs;
}