Variable declaration primary expression

[IchorDev]

On Tuesday, 21 January 2025 at 16:59:12 UTC, Andre wrote:
> On Monday, 20 January 2025 at 20:41:42 UTC, IchorDev wrote:
>> Someone brought up this clever idea here: 
>> https://github.com/dlang/dmd/pull/20653#issuecomment-2581474608
>> What does everyone think about being able to declare variables 
>> in expressions? Is there any pre-existing syntax that blocks 
>> us from being able to easily do this?
>
> If I understand it correctly this would solve my issue 
> https://github.com/dlang/dmd/issues/18890
>
> ```d
>
> with (auto p = new Panel())
> {
> 	parent = this;
> 	text = "bla";
> 	with (new Button())
> 	{
> 		parent = p; // Here p is needed
> 		text = "bla2";
> 	}
> }
> ```
>
> The syntax `with (auto p = new Panel())` is currently not 
> allowed.

That’s a very clever use of the syntax. I don’t see why that 
shouldn’t work.