Optimizations and performance

[Kagamin via Digitalmars-d]

On Friday, 10 June 2016 at 09:31:42 UTC, Chris wrote:
> Something like
>
> `void main()
> {
>     // Replace anything that looks like a real
>     // number with the rounded equivalent.
>     stdin
>         .byLine
>         .map!(l => l.replaceAll!(c => c.hit.round)
>                                 (reFloatingPoint))
>         .each!writeln;
> }
> `

That's a best practice that requires some learning and discipline 
to use. A newbie won't write such code.