std::logical_and
Defined in header <functional> |
||
---|---|---|
template< class T > struct logical_and; |
(until C++14) | |
template< class T = void > struct logical_and; |
(since C++14) |
Function object for performing logical AND (logical conjunction). Effectively calls operator&&
on type T
.
Specializations
The standard library provides a specialization of
|
(since C++14) |
Member types
Type | Definition |
---|---|
result_type (deprecated in C++17)(removed in C++20) |
bool |
first_argument_type (deprecated in C++17)(removed in C++20) |
T |
second_argument_type (deprecated in C++17)(removed in C++20) |
T |
These member types are obtained via publicly inheriting |
(until C++11) |
Member functions
operator()
|
returns the logical AND of the two arguments (public member function) |
std::logical_and::operator()
bool operator()( const T& lhs, const T& rhs ) const; |
(until C++14) | |
constexpr bool operator()( const T& lhs, const T& rhs ) const; |
(since C++14) |
Returns the logical AND of lhs
and rhs
.
Parameters
lhs, rhs | - | values to compute logical AND of |
Return value
The result of lhs && rhs
.
Exceptions
May throw implementation-defined exceptions.
Possible implementation
constexpr bool operator()(const T &lhs, const T &rhs) const { return lhs && rhs; } |
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