Documentation on regular expressions

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1

I’m new to UiPath, and am trying to learn more about regular expressions. I’m using RegEx builder and have chosen Advanced. Simple example: I enter the value ^([A-Z][\w]{7,20})*$ which ensures the value entered is between 8-20 characters and begins with a capital letter. However, I’m wondering if there a link to a page that describes ALL of the various expressions and what they mean such as ^, \w, etc.? I would love to see a comprehensive list of all expressions that can be used so I can learn more about them.

2

Since Regex’s are used for multiple applications and generally follow the same syntax, learning about RegEx’s in general is sufficient.

You can find a tutorial on what you can do with regular expressions here.

3

This is perfect. Thank you Anthony!

4

Hi, also new to RegEx. Can you help me understand why this does not allow 21 characters?

I thought [A-Z] is matching the first char. And then {7-20} would repeat 7 to 20 times after the first char. That is why there is a 7 not and 8. So I expected 19 and not 20.
Wouldn’t ^([A-Z][\w]{7,19})*$ would match up to 20 characters and fail 21

Any help appreciated

5

You are correct