I need to emulate the behavior of \\b开发者_高级运维 at the start of a string, where I\'m adding additional characters to the set that count as a word boundary. Right now I\'m using something like:
I am doing some replaces in some huge SSIS packages to r开发者_高级运维eflect changes in table- and column names.
How can I use lookbehind in a C# Regex in order to skip matches of repeated prefix patterns? Example - I\'m trying to have the expression match all the b characters following any number of a characte
For example,the regex below will cause failure reporting lookbehind assertion is not fixed length: #(?<!(?:(?:src)|(?:href))=["\\\']?)((?:https?|ftp)://[^\\s\\\'"<>()]+)#S
Ruby 1.9 regex supports lookbehind assertion but I seem to have difficulty when passing anchors in the pattern. When anchors are passed in the lookahead assertion it runs just fine.
In the following example I would like to retrieve the text between pMAINp and the first pMDSp. The regex has a look-behind and a look-ahead:
I have the following regex in a C# program, and have difficulties understanding it: (?<=#)[^#]+(?=#)
I\'m wondering if variable length lookbehind assertions are supported in JavaScript\'s RegExp engine?
Can you use backreferences in a lookbehind? Let\'s say I want to split wherever behind me a character is repeated twice.
I am porting some functionality from a C++ application to java. This involves reading non-modifiable data files that contain regular expressions.
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