kidongrok has asked for the wisdom of the Perl Monks concerning the following question:
DB<1> $a="abcdabcd" DB<2> p $a =~ /[0-9a-f]{4|8}/ DB<3> p $a =~ /[0-9a-f]{4}/ 1 DB<4> p $a =~ /[0-9a-f]{8}/ 1
NB-the display is eating the [] square brackets up there.
lots can follow from this:
- why no error on the 1st line
- am I really the 1st ? ;-)
- whats it mean currently ? (this I can answer)
1: BRANCH(15) 2: ANYOF[0-9a-f](13) 13: EXACT <{4>(18) 15: BRANCH(18) 16: EXACT <8}>(18) 18: END(0)
thats not what I expected, wouldnt you tacitly expect perl to do something similar to what it does with {4,8} there ? or is that ambiguous ?
given the availability of \, which is needed to get literal reading of []() chars, whats the harm ?
(He baits the hook, chum the water... Dont we have some regex-monsters lurking here ?
Janitored by Corion: Added formatting, code tags, as per Writeup Formatting Tips
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Re: what means this regex? $x = qr/[0-9a-f]{4|8}/
by reasonablekeith (Deacon) on Jun 09, 2006 at 08:38 UTC | |
Re: what means this regex? $x = qr/[0-9a-f]{4|8}/
by Zaxo (Archbishop) on Jun 09, 2006 at 08:30 UTC | |
by kidongrok (Acolyte) on Jun 09, 2006 at 14:32 UTC | |
by Zaxo (Archbishop) on Jun 09, 2006 at 14:47 UTC |
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