Description Inspects lines that contain only a character, let's say c, repeated n times. The name of the matching groups will tell you if n is 0, the unit 1, a prime number, or a composite number. Alternative ...

Given a version number MAJOR.MINOR.PATCH, increment the: MAJOR version when you make incompatible API changes. MINOR version when you add functionality in a backward compatible manner. PATCH version when you make backward compatible bug fixes. A pre-release version MAY be denoted by appending a hyp...

Match the web URL, like https://xxx.com or xxx.com, not matching the email or the ip address

Part 2 of my post.

96 Bit encryption by using a library. Possible to extend this beyond 96 if you have the time! Look at my other post to see how to decrypt. Based on using a library of values.

Matches one side of a chemical equation. So for ` 2HCl + 2Na → 2NaCl + H2 ` it would match each side individually with one newline between each 2HCl + 2Na and 2NaCl + H2

Describes how the first few lines of an Antimony (for Tellurium) CRN definition should look like

substitutes \[...\] with $$...$$

Substitute the oneliner GPT equations \(..\) to tex like i.e. $..$

Remove leading and trailing slashes

/^select\s+(?.+?)\s+from\s+(?\S+)\s*(?:where\s+(?[\d\w= ><!]+))?;?$/gmi

regex to validate mobile numbers all over the world

Credit Card Carrier Prediction This regex is specifically designed to predict from the first few characters which carrier type the credit card number is.

Matches some number of a's followed by the same number of b's, usually written as a^nb^n for all natural numbers n. For regular expressions as formally defined in formal language theory, this is impossible, but modern day regex engines can do far more than match just regular languages. Note that eve...

for finding and extracting numbers from the viewbox attribute. see also my generalized SVG number regex. v2: added support for scientific notation

for correctly parsing numbers in SVG attributes like path d or viewBox with regex v2: added support for scientific notation

Allowing all firsnames written with Latin text like Björn or D'Mariüsz

Tested in 2024 with various share/embed methods on YouTube video page

This is made to validate an ISO 8601 input in a Terraform variable validation block: validation { condition = can(regex("^P(\\d+Y)?(\\d+M)?(\\d+D)?(T(\\d+H)?(\\d+M)?(\\d+S)?)?$", var.value)) error_message = "The value must be a valid ISO 8601 duration string representing time. (e.g. PT...

Antonio-Marcos O'Higgins González