Someone on IRC posted the following site: https://mathiasbynens.be/demo/url-regex which challgenged me to write a decent regex to match valid URLs in that list. This regex works in both pcre and javascript (you'll have to replace the pcre-specific syntax to make it work in JS). Don't actually use t...

Works with 2015-04-03T13:56:24.0+00:00 (official) format, and 2015-04-03T13:56:24+0000 (PHP) format, too

are both strings matching, I wnat only the second one to match

Get extension of an file.

regex for phone numbers in Israel

Regexp for kz website mask "+7(999) 999-99-99"

Matches sentences, but skips over abreviations

JS Regex Lazy quantifier

Supports new top level domains, such as .plumbers .blackfriday

extract the path from a URL returns one group (if matching) with the path info e.g. http://somedomain.com/some-page/ http://www.domain.com:8080/some-page/ https://www.google.com:8080/some-page/...

make sure mysql tables have the correct form

We have a pipe delimited text file and each new record is separated by a CRLF. Each record has a fixed number of pipes, but not every column or field is valued, so there may be 2 or more pipes together. Is there a way to write a regex to parse out the third or fifth value? Many thanks in advance.

Expression to match a large amount of possible musical chords. From what I understand from musicians, the number of chords is basically infinite, but you will still find a certain scope being used freuently.