To be proper camel case a word with no digits allowed and upto 3 upper case letters, a word: Must start with a lower case alphabet (a through z) Must have no digits (0 - 9) MUST have no spaces, punctuation or special characters Can have at most 3 uppercase alphabets in a row Can end in an uppercase ...

A neat regular expression to extract web urls and emails from a paragraph or a text stream.

Flexible postcode validation with or without space as outlined here, but added optional space for flexibility https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/488478/Bulk_Data_Transfer_-_additional_validation_valid_from_12_November_2015.pdf

Regex for validating ISO 8601:2004E durations, complete with named capture groups.

Regex for parsing markdown link. Named group "text", "url" and "alt.

Inverts the 2 attributes

Guid parser

(\+977)?9\d{8}

No leading or trailing spaces

ipv4 with optional port

Match all filenames in any URL including those with ANSI escaped characters (dotNET version)

Developed for posh-git

My first simple e-mail validator regex :)

Detects one match per file if that file is missing the expected copyright text. This works with Visual Studio IDE. If you are using Rider (PCRE2), you can replace both \b entries with \Q then \E

篩選MP Log Day

Remove deprecated parameters

Insert "|tracks=" before the first occurrence

Turn comma separated values in three deprecated parameters into template calls. (timestamp not considered yet)

parses all valid NDC codes with or without hyphens

Validate a list of emails separated by a semicolon. Supports emails with accents and other alphabets. Valid email: Abc@example.com;Abc.123@example.com;user+mailbox/department=shipping@example.com;éüöä^0@émäil.côm !#$%&'*+-/=?^_`.{|}~@example.com;"Abc@def"@example.com;"Fred Bloggs"@example.com;"Joe.\...