// BEGIN_Function 10
/**
 The Function class wraps free functions in the form of a Callable, for use
with the signals/slots framework.
*/
template < typename R,class A1 = Void, class A2 = Void, class A3 = Void, class A4 = Void, class A5 = Void, class A6 = Void, class A7 = Void, class A8 = Void, class A9 = Void, class A10 = Void>
class Function : public Callable<R, A1,A2,A3,A4,A5,A6,A7,A8,A9,A10>
{
    public:
        /** The function signature wrapped by this class. */
        typedef R (*FuncT)(A1,A2,A3,A4,A5,A6,A7,A8,A9,A10);

        /** Wraps func. */
        Function(FuncT func)
        : _funcPtr(func) { }

        /** Deeply copies f. */
        Function(const Function& f)
        { this->operator=(f); }

        /** Call the wrapped function, passing it the arguments as-is and returning
        its return value. */
        R operator()(A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6, A7 a7, A8 a8, A9 a9, A10 a10) const
        { return (*_funcPtr)(a1,a2,a3,a4,a5,a6,a7,a8,a9,a10); }

        /** Creates a clone of this object and returns it. The caller owns the returned object. */
        Function<R,A1,A2,A3,A4,A5,A6,A7,A8,A9,A10>* clone() const
        { return new Function(*this); }


#if 0
        /** Deeply copies function and returns this object. */
        Function& operator=(const Function& function)
        {
            if( this != &function ) {
                _funcPtr = function._funcPtr;
            }
            return (*this);
        }
#endif

        /** Returns true if rhs and this object point to the same function. */
        bool operator==(const Function& rhs) const
        {
            return (_funcPtr == rhs._funcPtr);
        }

    private:
        FuncT _funcPtr;
};
/** FunctionSlot wraps Function objects so that they can act as
Slots.
*/
template < typename R,class A1 = Void, class A2 = Void, class A3 = Void, class A4 = Void, class A5 = Void, class A6 = Void, class A7 = Void, class A8 = Void, class A9 = Void, class A10 = Void>
class FunctionSlot : public BasicSlot<R, A1,A2,A3,A4,A5,A6,A7,A8,A9,A10>
{
    public:
        FunctionSlot(const Function<R,A1,A2,A3,A4,A5,A6,A7,A8,A9,A10>& func)
        : _func( func )
        {}

        /** Returns a pointer to this object's internal Callable. */
        virtual const void* callable() const
        { return &_func; }

        /** Creates a copy of this object and returns it. Caller owns the returned object. */
        Slot* clone() const
        { return new FunctionSlot(*this); }

        virtual void onConnect(const Connection& c)
        { }

        virtual void onDisconnect(const Connection& c)
        { }
        virtual bool equals(const Slot& slot) const
        {
            const FunctionSlot* fs = dynamic_cast<const FunctionSlot*>(&slot);
            return fs ? (_func == fs->_func) : false;
        }

    private:
        Function<R,A1,A2,A3,A4,A5,A6,A7,A8,A9,A10> _func;
}; // FunctionSlot


/** Creates and returns a Function wrapper for the given free/static function. */
template <typename R,class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9, class A10>
Function<R,A1,A2,A3,A4,A5,A6,A7,A8,A9,A10> callable(R (*func)(A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6, A7 a7, A8 a8, A9 a9, A10 a10))
{ return Function<R,A1,A2,A3,A4,A5,A6,A7,A8,A9,A10>(func); }

/** Creates and returns a FunctionSlot object for the given free/static function. */
template <typename R,class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9, class A10>
FunctionSlot<R,A1,A2,A3,A4,A5,A6,A7,A8,A9,A10> slot( R (*func)(A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6, A7 a7, A8 a8, A9 a9, A10 a10) )
{ return FunctionSlot<R,A1,A2,A3,A4,A5,A6,A7,A8,A9,A10>( callable(func) ); }

// END_Function 10
// BEGIN_Function 9
template < typename R,class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9>
class Function<R, A1,A2,A3,A4,A5,A6,A7,A8,A9,Void> : public Callable<R, A1,A2,A3,A4,A5,A6,A7,A8,A9,Void>
{
    public:
        /** The function signature wrapped by this class. */
        typedef R (*FuncT)(A1,A2,A3,A4,A5,A6,A7,A8,A9);

        /** Wraps func. */
        Function(FuncT func)
        : _funcPtr(func) { }

        /** Deeply copies f. */
        Function(const Function& f)
        { this->operator=(f); }

        /** Call the wrapped function, passing it the arguments as-is and returning
        its return value. */
        R operator()(A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6, A7 a7, A8 a8, A9 a9) const
        { return (*_funcPtr)(a1,a2,a3,a4,a5,a6,a7,a8,a9); }

        /** Creates a clone of this object and returns it. The caller owns the returned object. */
        Function<R,A1,A2,A3,A4,A5,A6,A7,A8,A9>* clone() const
        { return new Function(*this); }


#if 0
        /** Deeply copies function and returns this object. */
        Function& operator=(const Function& function)
        {
            if( this != &function ) {
                _funcPtr = function._funcPtr;
            }
            return (*this);
        }
#endif

        /** Returns true if rhs and this object point to the same function. */
        bool operator==(const Function& rhs) const
        {
            return (_funcPtr == rhs._funcPtr);
        }

    private:
        FuncT _funcPtr;
};

/** Creates and returns a Function wrapper for the given free/static function. */
template <typename R,class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9>
Function<R,A1,A2,A3,A4,A5,A6,A7,A8,A9> callable(R (*func)(A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6, A7 a7, A8 a8, A9 a9))
{ return Function<R,A1,A2,A3,A4,A5,A6,A7,A8,A9>(func); }

/** Creates and returns a FunctionSlot object for the given free/static function. */
template <typename R,class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9>
FunctionSlot<R,A1,A2,A3,A4,A5,A6,A7,A8,A9> slot( R (*func)(A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6, A7 a7, A8 a8, A9 a9) )
{ return FunctionSlot<R,A1,A2,A3,A4,A5,A6,A7,A8,A9>( callable(func) ); }

// END_Function 9
// BEGIN_Function 8
template < typename R,class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8>
class Function<R, A1,A2,A3,A4,A5,A6,A7,A8,Void,Void> : public Callable<R, A1,A2,A3,A4,A5,A6,A7,A8,Void,Void>
{
    public:
        /** The function signature wrapped by this class. */
        typedef R (*FuncT)(A1,A2,A3,A4,A5,A6,A7,A8);

        /** Wraps func. */
        Function(FuncT func)
        : _funcPtr(func) { }

        /** Deeply copies f. */
        Function(const Function& f)
        { this->operator=(f); }

        /** Call the wrapped function, passing it the arguments as-is and returning
        its return value. */
        R operator()(A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6, A7 a7, A8 a8) const
        { return (*_funcPtr)(a1,a2,a3,a4,a5,a6,a7,a8); }

        /** Creates a clone of this object and returns it. The caller owns the returned object. */
        Function<R,A1,A2,A3,A4,A5,A6,A7,A8>* clone() const
        { return new Function(*this); }


#if 0
        /** Deeply copies function and returns this object. */
        Function& operator=(const Function& function)
        {
            if( this != &function ) {
                _funcPtr = function._funcPtr;
            }
            return (*this);
        }
#endif

        /** Returns true if rhs and this object point to the same function. */
        bool operator==(const Function& rhs) const
        {
            return (_funcPtr == rhs._funcPtr);
        }

    private:
        FuncT _funcPtr;
};

/** Creates and returns a Function wrapper for the given free/static function. */
template <typename R,class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8>
Function<R,A1,A2,A3,A4,A5,A6,A7,A8> callable(R (*func)(A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6, A7 a7, A8 a8))
{ return Function<R,A1,A2,A3,A4,A5,A6,A7,A8>(func); }

/** Creates and returns a FunctionSlot object for the given free/static function. */
template <typename R,class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8>
FunctionSlot<R,A1,A2,A3,A4,A5,A6,A7,A8> slot( R (*func)(A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6, A7 a7, A8 a8) )
{ return FunctionSlot<R,A1,A2,A3,A4,A5,A6,A7,A8>( callable(func) ); }

// END_Function 8
// BEGIN_Function 7
template < typename R,class A1, class A2, class A3, class A4, class A5, class A6, class A7>
class Function<R, A1,A2,A3,A4,A5,A6,A7,Void,Void,Void> : public Callable<R, A1,A2,A3,A4,A5,A6,A7,Void,Void,Void>
{
    public:
        /** The function signature wrapped by this class. */
        typedef R (*FuncT)(A1,A2,A3,A4,A5,A6,A7);

        /** Wraps func. */
        Function(FuncT func)
        : _funcPtr(func) { }

        /** Deeply copies f. */
        Function(const Function& f)
        { this->operator=(f); }

        /** Call the wrapped function, passing it the arguments as-is and returning
        its return value. */
        R operator()(A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6, A7 a7) const
        { return (*_funcPtr)(a1,a2,a3,a4,a5,a6,a7); }

        /** Creates a clone of this object and returns it. The caller owns the returned object. */
        Function<R,A1,A2,A3,A4,A5,A6,A7>* clone() const
        { return new Function(*this); }


#if 0
        /** Deeply copies function and returns this object. */
        Function& operator=(const Function& function)
        {
            if( this != &function ) {
                _funcPtr = function._funcPtr;
            }
            return (*this);
        }
#endif

        /** Returns true if rhs and this object point to the same function. */
        bool operator==(const Function& rhs) const
        {
            return (_funcPtr == rhs._funcPtr);
        }

    private:
        FuncT _funcPtr;
};

/** Creates and returns a Function wrapper for the given free/static function. */
template <typename R,class A1, class A2, class A3, class A4, class A5, class A6, class A7>
Function<R,A1,A2,A3,A4,A5,A6,A7> callable(R (*func)(A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6, A7 a7))
{ return Function<R,A1,A2,A3,A4,A5,A6,A7>(func); }

/** Creates and returns a FunctionSlot object for the given free/static function. */
template <typename R,class A1, class A2, class A3, class A4, class A5, class A6, class A7>
FunctionSlot<R,A1,A2,A3,A4,A5,A6,A7> slot( R (*func)(A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6, A7 a7) )
{ return FunctionSlot<R,A1,A2,A3,A4,A5,A6,A7>( callable(func) ); }

// END_Function 7
// BEGIN_Function 6
template < typename R,class A1, class A2, class A3, class A4, class A5, class A6>
class Function<R, A1,A2,A3,A4,A5,A6,Void,Void,Void,Void> : public Callable<R, A1,A2,A3,A4,A5,A6,Void,Void,Void,Void>
{
    public:
        /** The function signature wrapped by this class. */
        typedef R (*FuncT)(A1,A2,A3,A4,A5,A6);

        /** Wraps func. */
        Function(FuncT func)
        : _funcPtr(func) { }

        /** Deeply copies f. */
        Function(const Function& f)
        { this->operator=(f); }

        /** Call the wrapped function, passing it the arguments as-is and returning
        its return value. */
        R operator()(A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6) const
        { return (*_funcPtr)(a1,a2,a3,a4,a5,a6); }

        /** Creates a clone of this object and returns it. The caller owns the returned object. */
        Function<R,A1,A2,A3,A4,A5,A6>* clone() const
        { return new Function(*this); }


#if 0
        /** Deeply copies function and returns this object. */
        Function& operator=(const Function& function)
        {
            if( this != &function ) {
                _funcPtr = function._funcPtr;
            }
            return (*this);
        }
#endif

        /** Returns true if rhs and this object point to the same function. */
        bool operator==(const Function& rhs) const
        {
            return (_funcPtr == rhs._funcPtr);
        }

    private:
        FuncT _funcPtr;
};

/** Creates and returns a Function wrapper for the given free/static function. */
template <typename R,class A1, class A2, class A3, class A4, class A5, class A6>
Function<R,A1,A2,A3,A4,A5,A6> callable(R (*func)(A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6))
{ return Function<R,A1,A2,A3,A4,A5,A6>(func); }

/** Creates and returns a FunctionSlot object for the given free/static function. */
template <typename R,class A1, class A2, class A3, class A4, class A5, class A6>
FunctionSlot<R,A1,A2,A3,A4,A5,A6> slot( R (*func)(A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6) )
{ return FunctionSlot<R,A1,A2,A3,A4,A5,A6>( callable(func) ); }

// END_Function 6
// BEGIN_Function 5
template < typename R,class A1, class A2, class A3, class A4, class A5>
class Function<R, A1,A2,A3,A4,A5,Void,Void,Void,Void,Void> : public Callable<R, A1,A2,A3,A4,A5,Void,Void,Void,Void,Void>
{
    public:
        /** The function signature wrapped by this class. */
        typedef R (*FuncT)(A1,A2,A3,A4,A5);

        /** Wraps func. */
        Function(FuncT func)
        : _funcPtr(func) { }

        /** Deeply copies f. */
        Function(const Function& f)
        { this->operator=(f); }

        /** Call the wrapped function, passing it the arguments as-is and returning
        its return value. */
        R operator()(A1 a1, A2 a2, A3 a3, A4 a4, A5 a5) const
        { return (*_funcPtr)(a1,a2,a3,a4,a5); }

        /** Creates a clone of this object and returns it. The caller owns the returned object. */
        Function<R,A1,A2,A3,A4,A5>* clone() const
        { return new Function(*this); }


#if 0
        /** Deeply copies function and returns this object. */
        Function& operator=(const Function& function)
        {
            if( this != &function ) {
                _funcPtr = function._funcPtr;
            }
            return (*this);
        }
#endif

        /** Returns true if rhs and this object point to the same function. */
        bool operator==(const Function& rhs) const
        {
            return (_funcPtr == rhs._funcPtr);
        }

    private:
        FuncT _funcPtr;
};

/** Creates and returns a Function wrapper for the given free/static function. */
template <typename R,class A1, class A2, class A3, class A4, class A5>
Function<R,A1,A2,A3,A4,A5> callable(R (*func)(A1 a1, A2 a2, A3 a3, A4 a4, A5 a5))
{ return Function<R,A1,A2,A3,A4,A5>(func); }

/** Creates and returns a FunctionSlot object for the given free/static function. */
template <typename R,class A1, class A2, class A3, class A4, class A5>
FunctionSlot<R,A1,A2,A3,A4,A5> slot( R (*func)(A1 a1, A2 a2, A3 a3, A4 a4, A5 a5) )
{ return FunctionSlot<R,A1,A2,A3,A4,A5>( callable(func) ); }

// END_Function 5
// BEGIN_Function 4
template < typename R,class A1, class A2, class A3, class A4>
class Function<R, A1,A2,A3,A4,Void,Void,Void,Void,Void,Void> : public Callable<R, A1,A2,A3,A4,Void,Void,Void,Void,Void,Void>
{
    public:
        /** The function signature wrapped by this class. */
        typedef R (*FuncT)(A1,A2,A3,A4);

        /** Wraps func. */
        Function(FuncT func)
        : _funcPtr(func) { }

        /** Deeply copies f. */
        Function(const Function& f)
        { this->operator=(f); }

        /** Call the wrapped function, passing it the arguments as-is and returning
        its return value. */
        R operator()(A1 a1, A2 a2, A3 a3, A4 a4) const
        { return (*_funcPtr)(a1,a2,a3,a4); }

        /** Creates a clone of this object and returns it. The caller owns the returned object. */
        Function<R,A1,A2,A3,A4>* clone() const
        { return new Function(*this); }


#if 0
        /** Deeply copies function and returns this object. */
        Function& operator=(const Function& function)
        {
            if( this != &function ) {
                _funcPtr = function._funcPtr;
            }
            return (*this);
        }
#endif

        /** Returns true if rhs and this object point to the same function. */
        bool operator==(const Function& rhs) const
        {
            return (_funcPtr == rhs._funcPtr);
        }

    private:
        FuncT _funcPtr;
};

/** Creates and returns a Function wrapper for the given free/static function. */
template <typename R,class A1, class A2, class A3, class A4>
Function<R,A1,A2,A3,A4> callable(R (*func)(A1 a1, A2 a2, A3 a3, A4 a4))
{ return Function<R,A1,A2,A3,A4>(func); }

/** Creates and returns a FunctionSlot object for the given free/static function. */
template <typename R,class A1, class A2, class A3, class A4>
FunctionSlot<R,A1,A2,A3,A4> slot( R (*func)(A1 a1, A2 a2, A3 a3, A4 a4) )
{ return FunctionSlot<R,A1,A2,A3,A4>( callable(func) ); }

// END_Function 4
// BEGIN_Function 3
template < typename R,class A1, class A2, class A3>
class Function<R, A1,A2,A3,Void,Void,Void,Void,Void,Void,Void> : public Callable<R, A1,A2,A3,Void,Void,Void,Void,Void,Void,Void>
{
    public:
        /** The function signature wrapped by this class. */
        typedef R (*FuncT)(A1,A2,A3);

        /** Wraps func. */
        Function(FuncT func)
        : _funcPtr(func) { }

        /** Deeply copies f. */
        Function(const Function& f)
        { this->operator=(f); }

        /** Call the wrapped function, passing it the arguments as-is and returning
        its return value. */
        R operator()(A1 a1, A2 a2, A3 a3) const
        { return (*_funcPtr)(a1,a2,a3); }

        /** Creates a clone of this object and returns it. The caller owns the returned object. */
        Function<R,A1,A2,A3>* clone() const
        { return new Function(*this); }


#if 0
        /** Deeply copies function and returns this object. */
        Function& operator=(const Function& function)
        {
            if( this != &function ) {
                _funcPtr = function._funcPtr;
            }
            return (*this);
        }
#endif

        /** Returns true if rhs and this object point to the same function. */
        bool operator==(const Function& rhs) const
        {
            return (_funcPtr == rhs._funcPtr);
        }

    private:
        FuncT _funcPtr;
};

/** Creates and returns a Function wrapper for the given free/static function. */
template <typename R,class A1, class A2, class A3>
Function<R,A1,A2,A3> callable(R (*func)(A1 a1, A2 a2, A3 a3))
{ return Function<R,A1,A2,A3>(func); }

/** Creates and returns a FunctionSlot object for the given free/static function. */
template <typename R,class A1, class A2, class A3>
FunctionSlot<R,A1,A2,A3> slot( R (*func)(A1 a1, A2 a2, A3 a3) )
{ return FunctionSlot<R,A1,A2,A3>( callable(func) ); }

// END_Function 3
// BEGIN_Function 2
template < typename R,class A1, class A2>
class Function<R, A1,A2,Void,Void,Void,Void,Void,Void,Void,Void> : public Callable<R, A1,A2,Void,Void,Void,Void,Void,Void,Void,Void>
{
    public:
        /** The function signature wrapped by this class. */
        typedef R (*FuncT)(A1,A2);

        /** Wraps func. */
        Function(FuncT func)
        : _funcPtr(func) { }

        /** Deeply copies f. */
        Function(const Function& f)
        { this->operator=(f); }

        /** Call the wrapped function, passing it the arguments as-is and returning
        its return value. */
        R operator()(A1 a1, A2 a2) const
        { return (*_funcPtr)(a1,a2); }

        /** Creates a clone of this object and returns it. The caller owns the returned object. */
        Function<R,A1,A2>* clone() const
        { return new Function(*this); }


#if 0
        /** Deeply copies function and returns this object. */
        Function& operator=(const Function& function)
        {
            if( this != &function ) {
                _funcPtr = function._funcPtr;
            }
            return (*this);
        }
#endif

        /** Returns true if rhs and this object point to the same function. */
        bool operator==(const Function& rhs) const
        {
            return (_funcPtr == rhs._funcPtr);
        }

    private:
        FuncT _funcPtr;
};

/** Creates and returns a Function wrapper for the given free/static function. */
template <typename R,class A1, class A2>
Function<R,A1,A2> callable(R (*func)(A1 a1, A2 a2))
{ return Function<R,A1,A2>(func); }

/** Creates and returns a FunctionSlot object for the given free/static function. */
template <typename R,class A1, class A2>
FunctionSlot<R,A1,A2> slot( R (*func)(A1 a1, A2 a2) )
{ return FunctionSlot<R,A1,A2>( callable(func) ); }

// END_Function 2
// BEGIN_Function 1
template < typename R,class A1>
class Function<R, A1,Void,Void,Void,Void,Void,Void,Void,Void,Void> : public Callable<R, A1,Void,Void,Void,Void,Void,Void,Void,Void,Void>
{
    public:
        /** The function signature wrapped by this class. */
        typedef R (*FuncT)(A1);

        /** Wraps func. */
        Function(FuncT func)
        : _funcPtr(func) { }

        /** Deeply copies f. */
        Function(const Function& f)
        { this->operator=(f); }

        /** Call the wrapped function, passing it the arguments as-is and returning
        its return value. */
        R operator()(A1 a1) const
        { return (*_funcPtr)(a1); }

        /** Creates a clone of this object and returns it. The caller owns the returned object. */
        Function<R,A1>* clone() const
        { return new Function(*this); }


#if 0
        /** Deeply copies function and returns this object. */
        Function& operator=(const Function& function)
        {
            if( this != &function ) {
                _funcPtr = function._funcPtr;
            }
            return (*this);
        }
#endif

        /** Returns true if rhs and this object point to the same function. */
        bool operator==(const Function& rhs) const
        {
            return (_funcPtr == rhs._funcPtr);
        }

    private:
        FuncT _funcPtr;
};

/** Creates and returns a Function wrapper for the given free/static function. */
template <typename R,class A1>
Function<R,A1> callable(R (*func)(A1 a1))
{ return Function<R,A1>(func); }

/** Creates and returns a FunctionSlot object for the given free/static function. */
template <typename R,class A1>
FunctionSlot<R,A1> slot( R (*func)(A1 a1) )
{ return FunctionSlot<R,A1>( callable(func) ); }

// END_Function 1
// BEGIN_Function 0
template < typename R>
class Function<R, Void,Void,Void,Void,Void,Void,Void,Void,Void,Void> : public Callable<R, Void,Void,Void,Void,Void,Void,Void,Void,Void,Void>
{
    public:
        /** The function signature wrapped by this class. */
        typedef R (*FuncT)();

        /** Wraps func. */
        Function(FuncT func)
        : _funcPtr(func) { }

        /** Deeply copies f. */
        Function(const Function& f)
        { this->operator=(f); }

        /** Call the wrapped function, passing it the arguments as-is and returning
        its return value. */
        R operator()() const
        { return (*_funcPtr)(); }

        /** Creates a clone of this object and returns it. The caller owns the returned object. */
        Function<R>* clone() const
        { return new Function(*this); }


#if 0
        /** Deeply copies function and returns this object. */
        Function& operator=(const Function& function)
        {
            if( this != &function ) {
                _funcPtr = function._funcPtr;
            }
            return (*this);
        }
#endif

        /** Returns true if rhs and this object point to the same function. */
        bool operator==(const Function& rhs) const
        {
            return (_funcPtr == rhs._funcPtr);
        }

    private:
        FuncT _funcPtr;
};

/** Creates and returns a Function wrapper for the given free/static function. */
template <typename R>
Function<R> callable(R (*func)())
{ return Function<R>(func); }

/** Creates and returns a FunctionSlot object for the given free/static function. */
template <typename R>
FunctionSlot<R> slot( R (*func)() )
{ return FunctionSlot<R>( callable(func) ); }

// END_Function 0
