http://www.oreilly.com/catalog/regex/
En/na Eda Srinivasareddy ha escrit:
Hi Salvat and Prakash
Thank you very much for your responses. From your responses I came to know that I have to know more about Regular Expressions before really trying them.
Please suggest me a good book for Regular expressions.
Thanks a lot
Eda
Jordi Salvat i Alabart <[EMAIL PROTECTED]> wrote:
En/na Eda Srinivasareddy ha escrit:
Hi all
Following are some of the doubts that we got while using for testing one of our applications?
1. Is there any way to find out the last Match number of the template of a regular expression instead of finding randomly by using 0 or by using some number say N to find the Nth Match Number?
I don't think there is. Actually, I'm pretty sure there isn't.
But probably you can devise a regexp that only matches on the correct entry. Keep reading.
2. Regular expression was not working proper in the case of the following code of a multi selection list box. The code is
<abc<abc<abc
The regular expression details I used:
Regular expression: \
Template: $1$
Match No: 1
Answer expected: abc
Answer received: abc"><abc<abc<abc
It is working correctly. "*" is a "greedy" operator: it will match as much as you can. Your regexp says: find me something starting with and grab what's inbetween -- and that's what it's doing, only that it is the FIRST "> in your text.
You may use "*?" instead: it's a "reluctant" operator. But it performs really poorly if there's no match or if the match is very long.
Even beter:
]*)\">
And talking about greedy/reluctant operators, you can use this to match the last such option:
.*]*)\">
Because .* is greedy, it will match everything it can -- and leave only the last Makes sense?
My doubt here is, did I do any mistake? If there is no mistake, why it is not giving only abc?
Thanks
Eda
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