std::equal_to<void>
From cppreference.com
< cpp | utility | functional
| Defined in header <functional>
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| template<> class equal_to<void>; |
(since C++14) | |
std::equal_to<void> is a specialization of std::equal_to with parameter and return type deduced.
Contents |
[edit] Nested types
| Nested type | Definition |
is_transparent
|
unspecified |
[edit] Member functions
| operator() |
tests if the two arguments compare equal (public member function) |
std::equal_to<void>::operator()
| template< class T, class U > constexpr auto operator()( T&& lhs, U&& rhs ) const |
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Returns the result of equality comparison between lhs and rhs.
Parameters
| lhs, rhs | - | values to compare |
Return value
std::forward<T>(lhs) == std::forward<U>(rhs).
[edit] Example
Run this code
#include <functional> int main() { constexpr int a = 0, b = 8; std::equal_to<> equal{}; static_assert(equal(a, a)); static_assert(!equal(a, b)); }
