With as an expression instead of a statement

[BCS]

Reply to Guillaume B.,

> Hi,
> 
> I've been playing with D for some time now and I thought of something.
> It might have been proposed before but I didn't find anything about
> it.
> 
> My idea is to enhance the "with" statement so that it becomes more
> useful: "with" could be an expression instead of a statement. The
> value of the expression would be the value of the object passed to the
> with statement. This could be very useful to initialize complex
> objects, like in GUI libraries.
> 
> Here is an example of what you can do now with "with":
> 
> class AClass { ... }
> 
> void foo(AClass c) { ... }
> 
> AClass c;
> with (c = new AClass()) {
> method1 = 10;
> method2 = 100;
> // ...
> }
> foo(c);
> 
> If "with" was an expression, you could write:
> 
> auto c = with (new AClass()) {
> method1 = 10;
> method2 = 100;
> // ...
> }
> foo(c);
> 
> Or, if you don't need "c":
> 
> foo(with (new AClass()) {
> method1 = 10;
> method2 = 100;
> // ...
> });
> What do you think?
> 
> Guillaume B.
> 

vote += 0.25;