Verified.Issued by Regex Hunter Academy to SebastianSteffen on 15 October 2026. It can't be edited.
Regex Hunter · Academy CompletedCertificate of completion
TRACK 2
Character classes
Master character classes: build sets of allowed characters, sweep whole ranges, flip a set inside-out with negation, and lean on the shorthands every hunter knows by heart.
Awarded to
SebastianSteffen
Character sets Ranges Negation Shorthands Hex ranges
10 / 10
hunts cleared
5
concepts
15 Oct 2026
issued
Verify at regexhunter.com/verifyRH-CHAR-081693