can I reuse statements?

[Jack]

On Monday, 10 May 2021 at 21:10:13 UTC, Paul Backus wrote:
> On Monday, 10 May 2021 at 21:01:53 UTC, Jack wrote:
>> [...]
>
> You can do it with a string mixin:
>
> ```d
> // Note: q{ ... } creates a "token string", a special kind of 
> string literal
> // that's used for code strings.
> // See https://dlang.org/spec/lex.html#token_strings
> enum string handleXY = q{
>                 auto c = arr[i]; // arr and i are available at 
> switch(code)'s scope
>                 auto m = Message(...);
>
>                 switch(code)
>                 {
>                     case BAA_A:  c.doSomething(m); break;
>                     case BAA_B: c.doSomething(m); break;
>                     default: assert(0, "error");
>                 }
> };
> ```
>
> Usage:
>
> ```d
> case X, Y:
>     mixin(handleXY);
> ```

sounds good, thanks!