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Re^2: while(<>) { ... } considered harmful

by Aristotle (Chancellor)
on Sep 08, 2002 at 05:15 UTC ( #195983=note: print w/replies, xml ) Need Help??

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  1. or download this
    my @idx = map /(id\d+)/, @items;
  2. or download this
    my @idx;
    /(id\d+)/ && push @idx, $1 for @items;
    

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[perldigious]: Just kidding. Thanks 1nickt, I'll go ahead and do it the right way. An extra set of brackets and a little extra indentation isn't too much to ask.
[karlgoethebier]: perldigious: perhaps a block if you are paranoid ;-)
[choroba]: but undef %hash and %hash = () both work, too, but the first one keeps the memory allocated, while the latter makes it available for other parts of the program.
[choroba]: iirc
[perldigious]: karlgoethebier: Well it is a pretty old and complicated (for me) bit of code I wrote (poorly by my current standards), so I'm expecting everything to break when I add the scoping and find out what else is undesireably scope changed. :-)
[perldigious]: Ah, thanks choroba, that sort of thing was precisely what I was wondering when I asked.
[perldigious]: I didn't want to tie up memory unecessarily basically, I wanted to "delete" it specifically to free it up, and wasn't sure I was even accomplishing that.

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