You probably want to use word boundary anchors so that you don't get false positives with fprintf when looking for int etc.

I agree. In other words, break the text into words before attempting to match entire words. So all the regex engine is doing is replicating an inner for-loop with an eq test.

while ( <> ) {
    for my $word ( m{\b(\w+)\b}g ) {
        if (grep {$word eq $_} @prims) {
            print qq{Found $word on line $.\n};
        }
    }
}

[download]

Update: which, of course, vindicates thezip's hash-based solution in the first response to this question.

In reply to Re^2: Pattern match array by Narveson
in thread Pattern match array by aennen

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