1.3 KiB
1.3 KiB
[arithmetic.operations.plus]
22 General utilities library [utilities]
22.10 Function objects [function.objects]
22.10.7 Arithmetic operations [arithmetic.operations]
22.10.7.2 Class template plus [arithmetic.operations.plus]
template<class T = void> struct plus { constexpr T operator()(const T& x, const T& y) const; };
constexpr T operator()(const T& x, const T& y) const;
Returns: x + y.
`template<> struct plus { template<class T, class U> constexpr auto operator()(T&& t, U&& u) const -> decltype(std::forward(t) + std::forward(u));
using is_transparent = unspecified; }; `
template<class T, class U> constexpr auto operator()(T&& t, U&& u) const -> decltype(std::forward<T>(t) + std::forward<U>(u));
Returns: std::forward(t) + std::forward(u).