Defined in header <functional> | ||
---|---|---|
template< class T > struct logical_or; | (until C++14) | |
template< class T = void > struct logical_or; | (since C++14) |
Function object for performing logical OR (logical disjunction). Effectively calls operator||
on type T
.
Specializations
The standard library provides a specialization of
| (since C++14) |
Member types
Type | Definition |
---|---|
result_type | bool |
first_argument_type | T |
second_argument_type | T |
Member functions
operator() | returns the logical OR of the two arguments (public member function) |
std::logical_or::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 OR of lhs
and rhs
.
Parameters
lhs, rhs | - | values to compute logical OR of |
Return value
The result of lhs || rhs
.
Exceptions
(none).
Possible implementation
constexpr bool operator()(const T &lhs, const T &rhs) const { return lhs || rhs; } |
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