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Re^2: Perlplexation - foreach shoulda Known

by eyepopslikeamosquito (Chancellor)
on Apr 13, 2012 at 21:51 UTC ( #965000=note: print w/replies, xml ) Need Help??

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  1. or download this
    x = [ 'apple', 'banana', 'orange' ]
    for i, val in enumerate(x): print i, val
  2. or download this
    0 apple
    1 banana
    2 orange
  3. or download this
    x = [ 'apple', 'banana', 'orange' ]
    x.each_with_index { |val, i| print "#{i} #{val}\n" }
  4. or download this
    use List::MoreUtils qw(each_array);
    my @x = ( 'apple', 'banana', 'orange' );
    while ( my ($i, $val) = $it->() ) {
        print "$i $val\n";
  5. or download this
    my @x = ( 'apple', 'banana', 'orange' );
    while ( my ($i, $val) = each @x ) {
        print "$i $val\n";

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[perldigious]: but... but... perldigious is the unvirtuous kind of lazy in this case. :-)
[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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