std::minus<void>
From cppreference.com
< cpp | utility | functional
Defined in header <functional>
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template<> class minus<void>; |
(since C++14) | |
std::minus<void> is a specialization of std::minus with parameter and return type deduced.
Contents |
[edit] Member types
Type | Definition |
is_transparent
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unspecified |
[edit] Member functions
operator() |
returns the difference of two arguments (public member function) |
std::minus<void>::operator()
template< class T, class U > constexpr auto operator()( T&& lhs, U&& rhs ) const |
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Returns the difference of lhs and rhs.
Parameters
lhs, rhs | - | values to subtract |
Return value
std::forward<T>(lhs) - std::forward<U>(rhs).
[edit] Example
Run this code
#include <complex> #include <functional> #include <iostream> int main() { auto complex_minus = std::minus<void>{}; // “void” can be omitted constexpr std::complex<int> z(4, 2); std::cout << complex_minus(z, 1) << '\n'; std::cout << (z - 1) << '\n'; }
Output:
(3,2) (3,2)