Hey, you're right!

I was about to example a case for partial keys getting substituted, but then I realized the keys are wrapped in word boundries, so there's no chance of partial key substitution, and no reason to sort.

Drop the sort and save some time.

In reply to Re^3: How to speed up multiple regex in a loop for a big data? by ruzam
in thread How to speed up multiple regex in a loop for a big data? by Anonymous Monk

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