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std::logical_not<void>

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logical_not<>
(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++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 logical_not<void>;
 (since C++14)

std::logical_not<void> is a specialization of std::logical_not with parameter and return type deduced.

Contents

[edit] Nested types

Nested type Definition
is_transparent unspecified

[edit] Member functions

operator()
 applies operator! to its argument
(public member function)

std::logical_not<void>::operator()

template< class T >

constexpr auto operator()( T&& arg ) const

    -> decltype(!std::forward<T>(arg));

Returns the result of !std::forward<T>(arg).

Parameters

arg - value to apply logical NOT to

Return value

!std::forward<T>(arg).

[edit] Example

This section is incomplete
Reason: no example
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