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Re: Fast/efficient way of check if a string in an strArr is contained in a line

by dragonchild (Archbishop)
on Nov 12, 2008 at 01:05 UTC ( #723041=note: print w/ replies, xml ) Need Help??


in reply to Fast/efficient way of check if a string in an strArr is contained in a line

Create a master regex. Let's say your options were

foo.*bar \w+\d+\s+\d+:\d$
You'd do something like:
my @skips = get_skips(); # However you get them my $skip_regex = join '|', map { "(?:${_})" } @skips; while ( <BIG_FILE> ) { next if /$skip_regex/; # Now you've checked everything. }
It's not going to be as fast as a hash lookup, but it'll be faster than your for-loop in most cases. Plus, it'll be more self-documenting.

My criteria for good software:
  1. Does it work?
  2. Can someone else come in, make a change, and be reasonably certain no bugs were introduced?


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