lookahead
Regex Replace Between " Encoding
I want to be able to replace styl开发者_如何学运维e="STUFF" I keep thinking that this is the correct REGEX:[详细]
2022-12-26 00:23 分类:问答Naming convention of regex, lookahead and lookbehind
Why is it counter intuitive? /(?<!\\d)\\d{8}(?!\\d)/, here (?<!\\d) comes first, but called lookbehind, (?!\\d) next, but called lookahead. All are counter intuitive.[详细]
2022-12-24 10:42 分类:问答Why does a positive lookahead lead to captures in my Perl regex?
I can\'t get why this code work: $seq = \'GAGAGAGA\'; my $regexp = \'(?=((G[UCGA][GA]A)|(U[GA]CG)|(CUUG)))\'; # zero width match[详细]
2022-12-24 03:19 分类:问答LookAhead Regex in .Net - unexpected result
I am a 开发者_开发技巧bit puzzled with my Regex results (and still trying to get my head around the syntax). I have been using http://regexpal.com/ to test out my expression, and its works as intended[详细]
2022-12-23 18:28 分类:问答Problem with look behind assertion and optional substring
I\'m trying to write some regex that will parse information from alerts generated by Hyperic HQ. The alerts come in as emails with a subject line like:[详细]
2022-12-20 20:33 分类:问答Regular expression negative lookahead
In my home directory I have a folder drupal-6.14 that contains the Drupal platform. From this directory I use the following command:[详细]
2022-12-11 11:56 分类:问答InputStreamReader.markSupported is false
I need to “un-read” characters from an InputStreamReader. For that purpose I wanted to use mark and reset but markSupported returns false for the InputStreamReader class, since it doesn’t maintain[详细]
2022-12-10 14:42 分类:问答Using lookahead with generators
I have implemented a generator-based scanner in Python that tokenizes a string into tuples of the form (token type, token value):开发者_JAVA技巧[详细]
2022-12-08 04:46 分类:问答