std::modulus<void>
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modulus<>
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Defined in header
<functional>
template<>
class modulus<void>;
(since C++14)
class modulus<void>;
std::modulus <void> is a specialization of std::modulus with parameter and return type deduced.
Contents
[edit] Nested types
Nested type
Definition
is_transparent
unspecified
[edit] Member functions
operator()
(public member function)
std::modulus<void>::operator()
template< class T, class U >
constexpr auto operator()( T&& lhs, U&& rhs ) const
Returns the remainder of the division of lhs by rhs.
Parameters
lhs, rhs
-
values to divide
Return value
std::forward <T>(lhs) % std::forward <U>(rhs).
[edit] Example
Run this code
#include <functional> #include <iostream> struct M { M(int x) { std::cout << "M(" << x << ");\n"; } M() {} }; auto operator%(M, M) { std::cout << "operator%(M, M);\n"; return M{}; } auto operator%(M, int) { std::cout << "operator%(M, int);\n"; return M{}; } auto operator%(int, M) { std::cout << "operator%(int, M);\n"; return M{}; } int main() { M m; // 42 is converted into a temporary object M{42} std::modulus <M>{}(m, 42); // calls operator%(M, M) // no temporary object std::modulus <void>{}(m, 42); // calls operator%(M, int) std::modulus <void>{}(42, m); // calls operator%(int, M) }
Output:
M(42); operator%(M, M); operator%(M, int); operator%(int, M);