It needs a major modification, since matching an integer is required. The accepted answer \d+ involves only "positive" integers. But -333 or +777 are also integers, which leads to two possible solutions with the last one being the most accurate: -?\d+ : The hyphen (optional minus sign) and a digit...

A "simple" regex to parse mime types. Handles all commonly occurring parts of a mime type string such as: Type Subtype Subtype's with an extra extension (e.g. svg+xml) (Optional input) Multiple parameters (Optional input)...

Accomodate for Discord's username changeover and match against either the old username or the new username. But only one or the other. Match: CesarHvl#9000 cesarhvl cesar.hvl...

A simple parser to exact all the components of a URI/URL as named groups

Date Validation with leap year handling, & it takes care of date validation in the format like :mm/dd/yyyy or mmddyyyy or mm-dd-yyyy or m/d/yyyy or m-d-yyyy. 12/01/1986 02/29/2016 02/29/2015 13/31/1986...

Parses a URL to the different parts

Parse an SFTP or FTP url and brak it into named capture groups.

Format: x0.00 Valid: 13.37 4.20 1.00...

Matches any number between 0 and 10 (inclusive) with 0 or 1 decimal places. Note that .5 will NOT be matched but 0.5 will. Also 10.X will not be matched, but 10 will.

Matches numbers that are likely to by financial amount. Does not consider the type of currency.

strip parentheses enclosed text with no keywords - handles nested parentheses - if using brackets/braces normalize string to parentheses then use the regex

Extract from {"city":{"id":1217734,"name":"Boysun","findname":"BOYSUN","country":"UZ","coord":{"lon":67.198608,"lat":38.206108},"zoom":8,"langs":[{"link":"http:\/\/en.wikipedia.org\/wiki\/Boysun"},{"ru":"Бойсун"}]},"time":1394871628,"main":{"temp":274.74,"temp_min":274.74,"temp_max":274.74,"pressure...

Searches for dotted decimal IPv4 Adresses and saves the numbers in match groups.

This is why

How to match the first line of a xml document

number with or without thousands separator(.) and decimal part(,) ES: 100000; 1.646; 13323,33; 3.444.434,44

Allow only two or more labels. Fix deprecated FQDN regexp not passing on test "dicas-l.com.br"