0 cost bound functions

[lefticus]

template<auto Func, auto ... Vals>
consteval auto bind_front()
{
  return []<typename ... Param>(Param && ... param) static -> decltype(auto) {
    return Func(Vals..., std::forward<Param>(param)...);
  };
}

https://compiler-explorer.com/z/nPaabcMxq

[LB--]

It looks like C++26 is adding this to std::bind_front and std::bind_back, along with std::nontype for std::function_ref

[lefticus]

No, those functions only bind the Callable at compile time, not the parameters also. This is the level above that.