Syntax for shortening deconstruct.

[MkazemAkhgary]

The syntax for deconstruct is like this

var (x, y) = obj;

its good, but you cant inline these

public void Foo(object x, object y) {}
//...
var (x, y) = obj;
Foo(x, y);
//...
var (x, y) = obj;
return (x, y);

following are ways to allow deconstruct in various cases.

Deconstruct in method arguments:

public void Foo(var(object x, object y))
{
     // able to use x and y directly.
}
//...
Foo(obj);

Deconstruct in method returns

public var(object x, object y) Foo()
{
     return obj; // deconstructs into valueTuple(x, y)
}

Remark

var(x, y) is basically extractor of value tuple such as (? x, ? y) t. therefor tuple could be also passed in method with var(? x, ? y) as argument. and can also be used as return value.

(int x, int y) t = (3,3);
var(x, y) = t;

[yaakov-h]

The first case of deconstructing when calling a method sounds similar to #424.

[MkazemAkhgary]

@yaakov-h .. syntax is interesting too, it also avoids requirement of changing methods signature.

[orthoxerox]

See also #153 for the first case.