^ # start-of-string (?=.*[0-9]) # a digit must occur at least once (?=.*[a-z]) # a lower case letter must occur at least once (?=.*[A-Z]) # an upper case letter must occur at least once (?=.*[@#$%^&+=]) # a special character must occur at least once (?=\S+$) ...

When encountering more than 1 pmid, make sure to return the first one

To get video id from different formats

At least one lower case, upper case and digit, at least 10 chars

A basic and rude email validation

Matching comma separated fields with pattern

test

TFS Forbidden Pattern web.config file Check-In Policy

Parse Keyboard keys from string Like ctrl+a matches ctrl and a in one group This supports complex strings

Validate belgian common phone numbers (simple landline and mobile only, no special/free/premium numbers)

Full Validation of Email ID

Extract AWS accountId from user arn given by get-user action