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Re: Capture group in Regex.

by ww (Bishop)
on May 04, 2013 at 11:32 UTC ( #1032029=note: print w/replies, xml ) Need Help??


in reply to Capture group in Regex.

"From what I understand, \1 matches any character except \n after ...."

Athanasius response is a good one, but, IMO, invites an alternate way to address a key element of your misconception. You can think of \1 and $1 as containers used to (temporarily) retain the matches found by the wildcards .

But \1 and $1 do NOT match anything, per se.

Explaining "temporarily is beyond the scope of this thread; just take care to assign the value in $1 (or any other of its ilk) to an ordinary, named variable (without $1's idiosyncrasies) as promptly as possible.


If you didn't program your executable by toggling in binary, it wasn't really programming!

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[GotToBTru]: Like most Swiss Army Knives, you can cut yourself trying to find the blade you actually want
[GotToBTru]: i am satisfied with the default settings turning the seemingly random formatting into something reliable
[Corion]: GotToBTru: Yeah, I started a quick(ly implemented but slowly running) implementation of a program that would guess the "best" configuration (that is, least amount of changes) from my code, but then found that it stops parsing the source as soon as it ..
[GotToBTru]: sadly, it can't do anything about this
[Corion]: ... encounters sub foo($bar,$baz) {, which is something I like nowadays
[Corion]: GotToBTru: Yeah, that stuff is hard to do away automatically ;)
[GotToBTru]: yeah, you mentioned it could not handle signatures

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