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Answers and rating deltas for

How do I make sure a string only a double of any length?

Author Votes Δ
Tyler Bye 5 +3.90
rsp 3 +2.51
Aaron Digulla 0 -0.23
John Scipione 0 -2.07
Mark 0 -2.30
stephen 0 0.00
Last visited: Sep 14, 2014, 5:07:29 AM