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Re: Regex help pls

by elef (Friar)
on Jan 23, 2011 at 10:54 UTC ( #883761=note: print w/replies, xml ) Need Help??


in reply to Regex help pls

Depending on what exatly you want your regex to do, you could simply just cheat:
/01|12|23|34|45|56|67|78|89/

It's not elegant, but it's the simplest solution. Even if you need to match series of 3 or more digits, there is very little typing needed.

Obviously, it's pretty easy to expand this to only match strings that contain no other numbers, or strings that contain no letters etc. You gave no information as to what you actually want the regex to do, so no specific solution can be given.

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[Corion]: Do you have any specific interests or general Perl knowledge?
[Cosmic37]: should I slurp? should I grep? Noble Lords I wish you good karma and beg your advice
[Corion]: Cosmic37: Ah, see perlfaq4, about How do I compute the intersection of two arrays
[Cosmic37]: I am out of practice; I use Perl for scientific programming for number crunching
[Corion]: Cosmic37: Basically, you read one file into a hash, keyed by your key, and then match the lines from the second file to that hash
[Cosmic37]: note that the two files only have datetimes which may match whereas other data per line is different format in file1 and file2 - is that really intersection?
[jedikaiti]: Hi Monks
[Corion]: Cosmic37: Well, if you want to use only parts of a line for the key, see split or whatever other mechanism to extract the key from the line
[Corion]: Hi jedikaiti!
[Cosmic37]: is there a webpage for full CB for this chat rather than side panel chat?

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