Iranian National Code aka Code Melli

a simple username pattern

validates strings in time format HH:mm with hour in 24h format. only accepts up to 23:59

Validating comma delimited strings for whitespaces & extra commas -- +(,()+){0,}

Checks whether a North American Numbering Plan (NANP) phone number is valid. (Matching numbers are not necessarily real.) However, it registers 299-911-9999 as OK, even though it's not valid.

All Valid: 3334444 222333444 12223334444 333-4444 222-333-4444...

Between two strings.

Awesome explanation of nested lookbacks

Reads C comments as this "/* Do test / and removes / */ parts and leaves only comment part

Matching-Gruppen: Fragenummer Vollständige Frage

Une expression pour définir des expressions de filtrage basé sur l'index (comme les numéros de pages dans les dialogues d'impression) Chaque segment de page est séparé par une , Chaque segment peut être sous la forme : : 4 .. : 3.. .. : 2..4...

jira.rubiconproject.com/browse/DP-1204-Date different issue

Identifying which members have not submitted a photo

Captures the serial number of a traditional zone file.