Vb.net regular expression.

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1.00/5 (1 vote)

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I need to create a program that gets information on a text file and using regular expression is the best way to do this. The information I want to pull has a format.
# = NUMBER @ = ALPHA

##@@@ - this is fixed and I can do this.
##@@@[####][@@] - the character enclosed with [] is optional and i don't know how to create a regular expression on that.

please help thanks.

What I have tried:

[0-9]{2}[A-Za-z]{3} for ##@@@

Posted 31-Mar-16 7:12am

hansoctantan

Updated 31-Mar-16 7:49am

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2 solutions

Solution 2

C++

[^\w+([\s-_]\w+)*$]

try this

Posted 31-Mar-16 7:49am

parthgoswami

Comments

Patrice T 31-Mar-16 15:00pm

This RegEx is weird for the least if not simply buggy.

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Patrice T · Accepted Answer · 2016-03-31T07:40:00

Solution 1

Read RegEx documentation
perlre - perldoc.perl.org[^]
And use this RegEx debugger to experiment: there is a textboc where you can paste text and you which part match.
Debuggex: Online visual regex tester. JavaScript, Python, and PCRE.[^]

Posted 31-Mar-16 7:40am

Patrice T

Comments

parthgoswami 31-Mar-16 13:50pm

[^\w+([\s-_]\w+)*$]

Patrice T 31-Mar-16 13:57pm

no need to copy your solution as comment.

hansoctantan 31-Mar-16 14:48pm

I use this debugger http://regexstorm.net/tester and it gives me error

Patrice T 31-Mar-16 14:53pm

gives error on what ?

hansoctantan 31-Mar-16 14:57pm

nevermind. got an idea with that regex. thanks a lot

Patrice T 31-Mar-16 15:06pm

give a try to the debugger, there is a nice feature :)