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Questions tagged regex-lookarounds

11 questions

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11
votes
4
answers

What do we need Lookahead/Lookbehind Zero Width Assertions for?

regex regex-lookarounds
asked 2013-06-14T10:01:28.383
35
votes
2
answers

Perl Regex "Not" (negative lookahead)

regex perl regex-lookarounds
asked 2012-04-04T00:12:31.397
143
votes
6
answers

Regex lookahead for 'not followed by' in grep

regex grep regex-lookarounds
asked 2012-02-08T16:52:40.823
20
votes
3
answers

Negative Lookahead Regex greed (why is .*? too greedy)

python regex perl regex-lookarounds
asked 2011-05-25T03:11:44.317
20
votes
3
answers

How to match multiple words in regex

php javascript regex programming-languages regex-lookarounds
asked 2011-03-24T15:55:59.723
15
votes
4
answers

Regex to match all permutations of {1,2,3,4} without repetition

regex permutation regex-lookarounds
asked 2010-06-23T12:01:58.360
17
votes
3
answers

JavaScript: The Good Parts; why is lookahead not good?

javascript regex regex-lookarounds
asked 2009-12-03T22:30:01.427
118
votes
3
answers

Regular expression negative lookahead

regex regex-lookarounds
asked 2009-11-17T14:59:06.540
37
votes
3
answers

String negation using regular expressions

regex regex-lookarounds negation
asked 2009-07-20T14:15:43.663
19
votes
2
answers

Javascript won't split using regex

javascript regex split regex-lookarounds
asked 2009-05-01T16:38:49.197
12
votes
4
answers

Need a regex to match a variable length string of numbers that can't be all zeros

regex validation pcre regex-lookarounds
asked 2009-02-06T17:26:27.437