AlexCode Posted June 16, 2004 Posted June 16, 2004 Hi... I need somewone pretty good dealing with RegEx. I need to buid a RegEx expression to validate math operators that aren't within parenthesis. By math operator I mean +,-,* and / Sample matches: 2+3 >Matches 1 (easy) 2+(2-3) >Matches 1 (#RentCP*2)/4 >Matches 1 (the / operator) (#A/2)+#B*(A-2) >Matches 2 (the + and * operators) (2*(A+2))/3 >Matches 1 (the / operator) -(B+4)*3 >Matches 2 (the - and * operators) Sample non matches: (2+3) (2*(A+2)) As you may already fugured out, this is to work with math expressions. If somewone wants to put his RegEx skills on this it'll be geatlly appretiated... Thank you very much. Alex :p Quote Software bugs are impossible to detect by anybody except the end user.
Arch4ngel Posted July 29, 2004 Posted July 29, 2004 hummm... a good one... @"[+-*/]" that is to dertermine the operator... .* = Any character (not a lazy match) .*? = Any character (lazy match... it means that it match the first in the Left-Right order unless you specified the RegexOptions Right to Left) to specify parenthesis (that are "Regex operator"...)... you'll have to write it like this : @"(\(|\)" which mean... capture "(" or ")". So... I don't know really how to do that... I just began putting myself to it... but if you have some question... maybe we could work this problem together. Quote "If someone say : "Die mortal !"... don't stay to see if he isn't." - Unknown "Learning to program is like going out with a new girl friend. There's always something that wasn't mentioned in the documentation..." - Me "A drunk girl is like an animal... it scream at everything like a cat and roll in the grass like a dog." - Me after seeing my girlfriend drunk and some of her drunk friend. C# TO VB TRANSLATOR
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