Regular Expressions 101

Parse and split in groups URL parts https://www.pnukee.com.br:443/user/1?v=1#id Group 0 = Full entry (https://pnukee.com.br:80/user/1?v=1#id) Group 1 = Protocol = (http:// or https://)...

After this validation, you can safely put string to System.Double.Parse and System.Single.Parse functions.

Useful for phone number extraction

detect key value pairs that ends with ; or & in a string contains sapaces

detect key value pairs in string with key having spaces

in the example, I'm matching all the #tags except *#thankyouburger *. very useful for when you want to strip out all but one tag

Matches strings that are formatted as arrays. The following will match: [ 3.4, -600, foo ] ["foo","bar"] [ bar, 1600 ]...