Re: delete local $a[$idx] - delete local $h{$key}

2009/7/25 Vincent Pit <perl@profvince.com>:
> I've just pushed a "deletelocal" branch to the repository that contains
> the implementation of "delete local $a[$idx] - delete local $h{$key}".
> This syntax was actually valid for a long time (at least since 5.6) but
> didn't do anything. Following a suggestion from Ricardo, I've made it
> equivalent "delete $a[$idx]; local $a[$idx]", except that it returns the
> value before the localization.

That's not really the equivalent, since $a[$idx] is restored afterwards, right?

> There are no changes to the grammar. The optree changes are minimal (now
> OP_DELETE also accepts OPpLVAL_INTRO). It works for (?:arrays|hashes)
> (?:references)? (?:subscripts|slices).
>
> You can find it at :
>
>    http://perl5.git.perl.org/perl.git/shortlog/refs/heads/deletelocal
>
> Tests, reviews and comments welcome.

This is a nice new feature and the implementation looks neat.

Not sure where to document this -- probably with the local() main docs.

• delete local $a[$idx] - delete local $h{$key} by Vincent Pit
• Re: delete local $a[$idx] - delete local $h{$key} by Rafael Garcia-Suarez
• Re: delete local $a[$idx] - delete local $h{$key} by Vincent Pit
• Re: delete local $a[$idx] - delete local $h{$key} by Vincent Pit