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Re: Re: alternative to List::Compare

by QM (Parson)
on Mar 26, 2004 at 22:27 UTC ( #340156=note: print w/replies, xml ) Need Help??

in reply to Re: alternative to List::Compare
in thread List::Compare

Do you need "a\$" and "^b"? That seems rather specific, and doesn't generalize. Perhaps "^a+\$" and "^b+\$" would be a better choice? Then it doesn't matter which one is processed first, or how many there are (e.g., "^c+\$").

BTW, I like the $h{$_} .= "a" idea. To scale it much larger, I'd probably go with a bit vector, something like this:

my @AoA = ( [1..10], [2..11], [3..12] ); my %h; foreach my $i ( 0..#@AoA ) { vec($h{$_},$i,1) = 1 for @{$AoA[$i]}; }
Of course, it's a bit more work to get the "only"s and "common"s out %(

Quantum Mechanics: The dreams stuff is made of

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