good example of assert as expression ?

[Richard (Rikki) Andrew Cattermole]

On 04/02/2026 8:58 AM, user1234 wrote:
> Following a [previous thread](https://forum.dlang.org/thread/ 
> loojkahtbzigawrscmsr at forum.dlang.org), can you give me good example 
> where the assert expression is useful ?
> 
> So far I only see the case where it is used as AndAnd RHS.
> 
> ```d
> void main()
> {
>      auto lhs()
>      {
>          extern(C) int rnd;
>          return (rnd % 1) + 1;
>      }
> 
>      lhs() && assert(0);
> }
> ```
> 
> I remember an old NG topic where someone asked if D supports the "assert 
> idiom".
> 
> So seriously assert as an expression just works in this context ?
> I mean don't you think it's an obscure feature that could be removed ?

&& isn't useful here, its ||

I.e. we use it in the form of ``ptr || assert(0)`` for the null check 
(not exact but close enough).