Look behind regex c cheat sheet


For example, if the string is a,1,b,2,c,3 and if they wanted to split the string at all commas except when they are not followed by numbers, then the solution would have been very simple, with negative lookahead, like thisTables of Perl Regular Expression (PRX) Metacharacters. ... Look-ahead and look-behind are ways to look ahead or behind a match to see whether a particular text ... Regular Expressions: Using Lookaheads to Group and Grab Exactly the Text You Want My previous post used zero-width lookahead and lookbehind assertions to grab some text from a gnarly-looking string, so I thought I'd follow up with a quick post on how that works.