no_discard.hpp

// Copyright (c) 2022, Tyler Weaver
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#pragma once
 
namespace fp {
 
template <typename F>
struct NoDiscard {
  F f_;
  NoDiscard(F const& f) : f_(f) {}
  template <typename... T>
  [[nodiscard]] constexpr auto operator()(T&&... t) const
      noexcept(noexcept(f_(std::forward<T>(t)...))) {
    return f_(std::forward<T>(t)...);
  }
};
 
}  // namespace fp