Help optimize D solution to phone encoding problem: extremely slow performace.

[Anonymouse]

On Saturday, 13 January 2024 at 23:20:32 UTC, Sergey wrote:
> I would suggest to rewrite in the same way as Rust implemented.
> Probably you would like to try:
> [...]

I would strongly argue for profiling first instead of optimising 
based on conjecture. If you profile you have solid evidence on 
what is actually slow. If you're very good at analysing D, 
well-educated hypotheses *may* be enough, until they suddenly 
aren't and you will have spent a lot of time on the wrong problem.