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RegexAdvice » Regular Expressions » Construction Advice » what does the following regex mean?

what does the following regex mean?

Last post 06-23-2009, 9:40 AM by ddrudik. 1 replies.


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06-23-2009, 6:53 AM 54236

bantumi12
Joined on 04-28-2009
Posts 5

what does the following regex mean?

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Hi,

I came across the following regex but could not understand what does this mean.

%7B[a-zA-Z]+_?-?[a-zA-Z]+%7D

please help. I use C# 2.0

Can comeone post a tut on all the symbols used in regex..? if one already exists please point me to it.

Cheers...!

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06-23-2009, 9:40 AM 54240 in reply to 54236

ddrudik
Joined on 05-24-2007
USA
Posts 2,079

Re: what does the following regex mean?

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Match Pattern Explanation:
The regular expression:

(?-imsx:%7B[a-zA-Z]+_?-?[a-zA-Z]+%7D)

matches as follows:

NODE                     EXPLANATION
----------------------------------------------------------------------
(?-imsx:                 group, but do not capture (case-sensitive)
                         (with ^ and $ matching normally) (with . not
                         matching \n) (matching whitespace and #
                         normally):
----------------------------------------------------------------------
%7B                      '%7B'
----------------------------------------------------------------------
[a-zA-Z]+                any character of: 'a' to 'z', 'A' to 'Z'
                           (1 or more times (matching the most amount
                           possible))
----------------------------------------------------------------------
_?                       '_' (optional (matching the most amount
                           possible))
----------------------------------------------------------------------
-?                       '-' (optional (matching the most amount
                           possible))
----------------------------------------------------------------------
[a-zA-Z]+                any character of: 'a' to 'z', 'A' to 'Z'
                           (1 or more times (matching the most amount
                           possible))
----------------------------------------------------------------------
%7D                      '%7D'
----------------------------------------------------------------------
)                        end of grouping
----------------------------------------------------------------------

http://www.regular-expressions.info/tutorial.html

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