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Re: What can regular expressions NOT do?by buzzcutbuddha (Chaplain) |
on Apr 25, 2000 at 15:18 UTC ( [id://8933]=note: print w/replies, xml ) | Need Help?? |
The question is not so much 'What Can't Regexp Do?', but when shouldn't you use it. There are times when processing strings where it is easier and faster to use a substr to grab what you need from input. This is especially true if you know that the length of the input elements does not change (ie a fixed-width flat text file...). I guess the analogy would be that if you wanted to dig postholes for a fence, you could use a shovel, which is powerful and has many different ways to use, but is not as efficient as a posthole digger. Don't get me wrong, I love regexps, but sometimes, they are not the best tool for the job. :)
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