std::move_only_function::move_only_function(3)

NAME
std::move_only_function::move_only_function - std::move_only_function::move_only_function

Synopsis
   move_only_function() noexcept; (1) (since C++23)
   move_only_function( std::nullptr_t ) noexcept; (2) (since C++23)
   move_only_function( move_only_function&& other ) noexcept; (3) (since C++23)
   move_only_function( const move_only_function& ) = delete; (4) (since C++23)
   template< class F > (5) (since C++23)
   move_only_function( F&& f );
   template< class T, class... CArgs >
   explicit move_only_function( std::in_place_type_t<T>, CArgs&&... (6) (since C++23)
   args );
   template< class T, class U, class... CArgs >
   explicit move_only_function( std::in_place_type_t<T>, (7) (since C++23)
                        std::initializer_list<U> il,
   CArgs&&... args );
   Creates a new std::move_only_function.
   1,2) Default constructor and the constructor taking nullptr construct an empty
   std::move_only_function.
   3) Move constructor constructs a std::move_only_function whose target is that of
   other. other is in a valid but unspecified state after move construction.
   4) Copy constructor is deleted. std::move_only_function does not satisfy
   CopyConstructible.
   5) Let VT be std::decay_t<F>. If f is a null function pointer, a null pointer to
   member value, or an empty std::move_only_function (may be any specialization), then
   constructs an empty std::move_only_function. Otherwise, constructs a
   std::move_only_function whose target is of type VT and direct-non-list-initialized
   with std::forward<F>(f).
     * This overload participates in overload resolution only if VT is neither same as
       move_only_function nor a specialization of std::in_place_type_t, and
       /*is-callable-from*/<VT> (see below) is true.
     * The program is ill-formed if std::is_constructible_v<VT, F> is not true.
   6) Let VT be std::decay_t<T>. Constructs a std::move_only_function whose target is
   of type VT and direct-non-list-initialized with std::forward<CArgs>(args)....
     * This overload participates in overload resolution only if both
       std::is_constructible_v<VT, CArgs...> and /*is-callable-from*/<VT> (see below)
       are true.
     * The program is ill-formed if VT is not the same type as T.
   7) Let VT be std::decay_t<T>. Constructs a std::move_only_function whose target is
   of type VT and direct-non-list-initialized with il, std::forward<CArgs>(args)....
     * This overload participates in overload resolution only if both
       std::is_constructible_v<VT, std::initializer_list<U>&, CArgs...> and
       /*is-callable-from*/<VT> (see below) are true.
     * The program is ill-formed if VT is not the same type as T.
   For constructors (5-7), the behavior is undefined if VT does not satisfy the
   Destructible requirements, or std::is_move_constructible_v<VT> is true but VT does
   not satisfy the MoveConstructible requirements.
   The constant /*is-callable-from*/<VT> is dependent on cv, ref, and noex in the
   template parameter of std::move_only_function as below:
    cv ref noexcept(noex) /*is-callable-from*/<VT>
                        std::is_invocable_r_v<R, VT, Args...> &&
       noexcept(false)
                        std::is_invocable_r_v<R, VT&, Args...>
                        std::is_nothrow_invocable_r_v<R, VT, Args...> &&
        noexcept(true)
                        std::is_nothrow_invocable_r_v<R, VT&, Args...>
                        std::is_invocable_r_v<R, const VT, Args...> &&
    const noexcept(false)
                        std::is_invocable_r_v<R, const VT&, Args...>
                        std::is_nothrow_invocable_r_v<R, const VT, Args...> &&
     const noexcept(true)
                        std::is_nothrow_invocable_r_v<R, const VT&, Args...>
      & noexcept(false) std::is_invocable_r_v<R, VT&, Args...>
       & noexcept(true) std::is_nothrow_invocable_r_v<R, VT&, Args...>
   const & noexcept(false) std::is_invocable_r_v<R, const VT&, Args...>
    const & noexcept(true) std::is_nothrow_invocable_r_v<R, const VT&, Args...>
      && noexcept(false) std::is_invocable_r_v<R, VT, Args...>
      && noexcept(true) std::is_nothrow_invocable_r_v<R, VT, Args...>
   const && noexcept(false) std::is_invocable_r_v<R, const VT, Args...>
   const && noexcept(true) std::is_nothrow_invocable_r_v<R, const VT, Args...>

Parameters
   other - another std::move_only_function to move from
   f - a function or a Callable object to wrap
   args - arguments to construct the target object
   il - std::initializer_list to construct the target object

Exceptions
   5-7) May throw std::bad_alloc on allocation failure or propagate the exception
   thrown by the initialization of the target. No exception is thrown if VT is a
   function pointer type or a specialization of std::reference_wrapper.

Example
    This section is incomplete
    Reason: no example

See also
   constructor constructs a new std::function instance
                 (public member function of std::function<R(Args...)>)

Category:
     * Todo no example