1 2 | template< class T >
struct logical_and;
|
| | (until C++14) |
1 2 | 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 std::logical_and when T is not specified, which leaves the parameter types and return type to be deduced.
| | function object implementing x && y deducing argument and return types
(class template specialization) |
| (since C++14) |
Member types
| Type | Definition |
|---|
result_type | bool |
first_argument_type | T |
second_argument_type | T |
Member functions
| | returns the logical AND of the two arguments
(public member function) |
std::logical_and::operator()
1 | bool operator()( const T& lhs, const T& rhs ) const;
|
| | (until C++14) |
1 | 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
(none).
Possible implementation
1 2 3 4 | constexpr bool operator()(const T &lhs, const T &rhs) const
{
return lhs && rhs;
}
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