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Answers and rating deltas for

How can I check with a regex that a string contains only certain allowed characters?

Author Votes Δ
Chris Van Opstal 10 +1.25
dnagirl 1 +0.39
Glycerine 0 -1.85
Tim Pietzcker 0 -1.41
Last visited: Sep 14, 2014, 5:07:29 AM