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Re: Efficient walk/iterate along a string

by Corion (Pope)
on Nov 22, 2010 at 23:02 UTC ( #873070=note: print w/ replies, xml ) Need Help??

in reply to Efficient walk/iterate along a string

substr isn't exactly cheap - depending on what you really want to do with a single character, a regular expression moving across the string might (or might not) be faster. See perlop and perlre for /gc.

while ($protein =~ /\G(.)/gc) { print $1; ... };

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