Range golf challenge: apply predicate to a subrange, returning the original range modified.

[H. S. Teoh]

On Fri, Oct 07, 2022 at 04:49:33PM +0000, rassoc via Digitalmars-d wrote:
> On 10/7/22 16:00, FeepingCreature via Digitalmars-d wrote:
> > Thoughts?
> 
> How about your selector func wraps the elements, similar to Nullable
> or via SumType, and your modifier func operates on the marked ones
> during iteration while returning the others as is? Poor man's monads?

Another way is if you convert .select into a predicate, then:

	auto r = myrange.map!(e => pred(e) ? modify(e) : e);

But that depends on how easy it is to convert .select into a predicate.


T

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