Allow getting returned value from instance methods / bound functions.

[back2dos]

I would like support for one of these two:

mercedesFactory = new CarFactory({ brand: 'Mercedes' });
redMercedes = mercedesFactory.makeCar({ color: 'red' });
//or
createMercedes = Car.create.bind("Mercedes")
redMercedes = createMercedes({ color: 'red' });

The main point is to not have to refer to the same values again and again, e.g. if you want to create 1000 Mercedeseseseses (what's the plural here?) then it makes sense to preconfigure some kind of factory (instance or function) in flow. Personally I would prefer the former.

[gene-pavlovsky]

Mercedesi?

[FrancisBourre]

These are the 3 scenarios I've been working on. Every scenario works (tested) with or without argument. Let me know if something's missing.

@context
{
    @public 
    gateway = service.getGatewayURL( url, page );

    @public
    service = new hex.mock.MockService();

    url = "http://localhost/amfphp/";
    page = "gateway.php";
}

@context
{
    @public 
    cloned = closure( service );

    service = new hex.mock.MockService();
    closure = hex.mock.MockService.clone.bind( _, gateway );
    gateway = "http://localhost/amfphp/gateway.php";
}

@context
{
    @public 
    gateway = closure( url );

    @public
    service = new hex.mock.MockService();

    url = "http://localhost/amfphp/";
    page = "gateway.php";

    closure = service.getGatewayURL.bind( _, page );
}