#include #include #include #include /* Credits go to: https://github.com/klmr/named-operator */ namespace Base { template struct named_operator_wrapper { F f; }; template struct named_operator_lhs { F f; T& value; }; template inline named_operator_lhs operator <(T& lhs, named_operator_wrapper rhs) { return {rhs.f, lhs}; } template inline named_operator_lhs operator <(T const& lhs, named_operator_wrapper rhs) { return {rhs.f, lhs}; } template inline auto operator >(named_operator_lhs const& lhs, T2 const& rhs) -> decltype(lhs.f(std::declval(), std::declval())) { return lhs.f(lhs.value, rhs); } template inline auto operator >=(named_operator_lhs const& lhs, T2 const& rhs) -> decltype(lhs.value = lhs.f(std::declval(), std::declval())) { return lhs.value = lhs.f(lhs.value, rhs); } template inline constexpr named_operator_wrapper make_named_operator(F f) { return {f}; } } namespace op { int pow(int a, int b){return std::pow(a,b);} } auto p = Base::make_named_operator(op::pow); auto in = Base::make_named_operator([](int i, const std::vector& v){return std::find(begin(v), end(v), i) != end(v);}); int main() { std::cout << (3

8) << std::endl; std::vector v = {1,12,51,4,66}; std::cout << "Check if 51 is in the vector: " << std::boolalpha << (51 v); }

Custom operators