l2kashe:

Your two snippets don't seem to be equivalent. The first (while loop), when run on my dictionary file with the pattern /^zy/, sets $capture to 'zymurgy' (the last match), while the second (grep) sets it to 'zygote' (the first match).

I understand why the while loop works how it does, perhaps someone could explain why grep works differently?

TIA, dave

In reply to Re: Re: Re: What is faster? (grep vs while) by Not_a_Number
in thread What is faster? by hotshot

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