auto: useful, annoying or bad practice?

[Chris M.]

On Friday, 11 May 2018 at 18:44:25 UTC, H. S. Teoh wrote:
> On Fri, May 11, 2018 at 04:57:05PM +0000, Mark via 
> Digitalmars-d wrote:
>> [...]
>
> This makes me wonder if it might be useful to have return-type 
> constraints.  A kind of static out-contract?  Something that's 
> part of the function declaration, that ensures that the return 
> type satisfies certain properties.
>
> [...]

Coincidentally, over in Rust...

https://blog.rust-lang.org/2018/05/10/Rust-1.26.html