Function invoke

dlib/functional.h:159–169

    
    template< typename F, typename... Args>
    constexpr auto invoke(F && f, Args &&... args)
    /*!
        ensures
            - identical to std::invoke(std::forward<F>(f), std::forward<Args>(args)...)
            - works with C++11 onwards
    !*/
    noexcept(noexcept(detail::invoke_(std::forward<F>( f ), std::forward<Args>( args )...)))
    -> decltype(detail::invoke_(std::forward<F>( f ), std::forward<Args>( args )...))
    {
        return detail::invoke_(std::forward<F>( f ), std::forward<Args>( args )...);
    }

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