Re: Passing a variable to a regex


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Re: Passing a variable to a regex

by Athanasius (Archbishop)

on Sep 17, 2015 at 11:17 UTC ( #1142311=note: print w/replies, xml )

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in reply to Passing a variable to a regex

Hello mavericknik,

I see choroba has answered your question, but I wanted to ask: what is [NOR|OR] supposed to do in the regex? It is actually a character class, which matches any one character from the list “N”, “O”, “R”, “|”:

21:10 >perl -wE "my $s = ' NOR42'; $s =~ / [NOR|OR](.*)/; say $1;"
OR42

21:10 >
[download]

Did you mean to write this: (?:NOR|OR)? If so, it can be shortened to: N?OR.

Hope that helps,

Athanasius <°(((>< contra mundum Iustus alius egestas vitae, eros Piratica,

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Re^2: Passing a variable to a regex by mavericknik (Sexton) on Sep 17, 2015 at 11:37 UTC
Wow thanks a lot for that! I was just going through the results after fixing the script and getting weird results. Makes sense now!	[reply]

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