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Postings from December 2022
Op 02-12-2022 om 18:38 schreef Paul "LeoNerd" Evans:
>
> I believe that, between them, this set of ideas and syntax could be a
> useful addition to the Perl language, as a much more predictable and
> controllable alternative to smartmatch.
>
Wouldn't this syntax be worthwhile to be generalised, so it can be used
for user defined subs as well?
F.i.
sub my_in($needle :use($op), @haystack)
{
for (@haystack) {
return $_ if $_ :$op $needle;
}
Note this is a brainstorm idea, the above has some obvious problems.
First there is a syntax problem, as written it clashes with ternaries.
Secondly, different operations would need $needle to be either on the
LHS or RHS, but I already mailed about that in another separate mail,
better to discuss that problem there first.
Obviously it would be great if this would be somewhere in the future. I
bring it up now because if we want it, it might have effect on the
syntax of the currently proposed 'in'.
HTH,
M4
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