I was playing with the "o" modifier for regexs, and was wondering about this switch in relation to performance. It would seem that if the regex itself doesnt ever change, it is always better to use the "o" modifier. For instance, code like this should work faster over a lot of iterations, if we include the "o" modifier. 
    my @parts = $field =~ /([A-Za-z]+|\d+)/go;

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So, i'm really looking for situations where one would not want to include the "o" modifier (for constant regex's)

thanks

In reply to regex "o" modifier by shemp

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