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The problem with //i isn't (wasn't?) that it's slower on small strings. It's that it uses twice the memory as an equivalent character class. And when you start matching against huge strings that can really make a difference. Try your example against a 50MB string and I think you'll see what I mean. If not you can justly castigate me for being too lazy to test my own assertions.

Eagerly awaiting the second edition,

In reply to Re: Re: Idiomatic optimizations by samtregar
in thread Idiomatic optimizations by Juerd

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