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Five Sweet Perl Tips

 
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Five Sweet Perl Tips
girasquid
7 Oct, 2007 - 05:02 PM
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I just found this article:
Five great Perl programming techniques to make your life fun again, and I thought that I should share it. I think it's got some neat ideas, and I've only tried out 2 of them(although I'm currently brainstorming ideas for how to use the others in my projects). Has anyone tried all five?

This post has been edited by girasquid: 7 Oct, 2007 - 05:02 PM
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KevinADC
RE: Five Sweet Perl Tips
7 Oct, 2007 - 09:29 PM
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Nothing new in the article for me, but for a newer perl coder the tips are good.
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Chubber
RE: Five Sweet Perl Tips
31 Oct, 2007 - 10:11 AM
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He hits some of the good Perl tricks on the head. Even if you don't do it all, learn "map" and "$a ||= 5" trick and it will help you a lot.
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girasquid
RE: Five Sweet Perl Tips
31 Oct, 2007 - 01:07 PM
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Yeah, I have to say that I'm starting to drool over map (and a little more over grep, now that I can use it with map).
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KevinADC
RE: Five Sweet Perl Tips
31 Oct, 2007 - 05:27 PM
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QUOTE(girasquid @ 31 Oct, 2007 - 02:07 PM) *

Yeah, I have to say that I'm starting to drool over map (and a little more over grep, now that I can use it with map).



map and grep are great tools but don't use them unwisely. They both process an entire list and that is often not what you want to do. Use a "for" or "foreach" or "while" loop when you want to break out of a list while processing it. You can use: last, next, redo, with loops but not with map and grep. I am not sure, but I think map reads an entire list/file into memory, and that can lead to other problems if the list/file is big.
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girasquid
RE: Five Sweet Perl Tips
31 Oct, 2007 - 07:41 PM
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QUOTE(KevinADC @ 31 Oct, 2007 - 06:27 PM) *

QUOTE(girasquid @ 31 Oct, 2007 - 02:07 PM) *

Yeah, I have to say that I'm starting to drool over map (and a little more over grep, now that I can use it with map).



map and grep are great tools but don't use them unwisely. They both process an entire list and that is often not what you want to do. Use a "for" or "foreach" or "while" loop when you want to break out of a list while processing it. You can use: last, next, redo, with loops but not with map and grep. I am not sure, but I think map reads an entire list/file into memory, and that can lead to other problems if the list/file is big.


Thanks for the tip; I'll keep that in mind.
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