std::logical_and<void>

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< cpp‎ | utility‎ | functional
 
 
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)
logical_and<>
(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 logical_and<void>;
(since C++14)

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

Nested types

Nested type Definition
is_transparent unspecified

Member functions

operator()
applies operator&& to lhs and rhs
(public member function)

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

template< class T, class U >

constexpr auto operator()( T&& lhs, U&& rhs ) const

    -> decltype(std::forward<T>(lhs) && std::forward<U>(rhs));

Returns the result of lhs && rhs.

Parameters

lhs, rhs - values to logical AND

Return value

The result of lhs && rhs.

Example