braceless with statements

Ogi ogion.art at gmail.com
Fri Nov 12 15:03:33 UTC 2021


On Friday, 12 November 2021 at 10:55:21 UTC, Stefan Koch wrote:
> Good Morning Everyone,
>
> I recently found myself wanting to introduce a bunch of member 
> variables into the scope of the function I was currently 
> working on.
> Of course D has a nice way to do that; The `with` statement.
>
> so
> ```D
> struct S { int x; }
> int fn()
> {
>     S s;
>     with(s)
>     {
>        x = 12;
>        return x;
>     }
> }
> ```
>
> this code works but it forces another level of indentation 
> which makes it a little ugly.
>
> So I did a small patch to my local version of dmd.
> And now this works:
> ```D
> struct S { int x; }
> int fn()
> {
>     S s;
>     with(s):
>     x = 12;
>     return x;
> }
> ```
>
> It is a really simple patch and I think it's worthwhile to have 
> this in the main language.

I’m missing the point. Why using a struct to add some variables? 
At first I thought that you want to shadow already existing 
variables but this is prohibited in D and thank God for that.


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