std::plus< T > Class Template Reference

Function object for performing addition. More...

Public Types
using	first_argument_type = T
	Type of the first value to add.
using	result_type = T
	Result type of invoking this object.
using	second_argument_type = T
	Type of the second value to add.

Public Member Functions
template<class U = T, arene::base::constraints< std::enable_if_t<!is_integral_v< U > > > = nullptr>
constexpr auto	operator() (T const &lhs, T const &rhs) const noexcept(noexcept(std::declval< T & >()+std::declval< T & >())) -> T
	Returns the first value plus the second value.
template<class U = T, arene::base::constraints< std::enable_if_t< is_integral_v< U > > > = nullptr>
constexpr auto	operator() (T const &lhs, T const &rhs) const noexcept(noexcept(std::declval< T >()+std::declval< T & >())) -> T
	Returns the first value plus the second value.

Detailed Description

template<class T = void>
class std::plus< T >

Function object for performing addition.

Template Parameters

T	The type of the values

Note

This class contains the member types result_type, first_argument type, and second_argument type. These aliases have been deprecated in C++17 and removed in C++20.

Member Typedef Documentation

first_argument_type

template<class T = void>

using std::plus< T >::first_argument_type = T

Type of the first value to add.

result_type

template<class T = void>

using std::plus< T >::result_type = T

Result type of invoking this object.

second_argument_type

template<class T = void>

using std::plus< T >::second_argument_type = T

Type of the second value to add.

Member Function Documentation

operator()() [1/2]

template<class T = void>

template<class U = T, arene::base::constraints< std::enable_if_t<!is_integral_v< U > > > = nullptr>

auto std::plus< T >::operator() ( T const & lhs, T const & rhs ) const -> T

inlineconstexprnoexcept

Returns the first value plus the second value.

Template Parameters

U	Template parameter to enable constraints.

Parameters

lhs	The first value to add
rhs	The second value to add

Returns

Returns the result of invoking operator+ on lhs and rhs

operator()() [2/2]

template<class T = void>

template<class U = T, arene::base::constraints< std::enable_if_t< is_integral_v< U > > > = nullptr>

auto std::plus< T >::operator() ( T const & lhs, T const & rhs ) const -> T

inlineconstexprnoexcept

Returns the first value plus the second value.

Template Parameters

U	Template parameter to enable constraints.

Parameters

lhs	The first value to add
rhs	The second value to add

Returns

Returns the result of invoking operator+ on lhs and rhs

Note

This overload explicitly casts the result of the computation to the type T. This avoids any warning for implicit conversion (present on gcc8).

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The documentation for this class was generated from the following file:

• stdlib/include/stdlib_detail/plus.hpp