From: Sathya Levy <sathyalevy@...>
Date: 2012-01-27T07:15:34+09:00
Subject: Help with back references in regex

Amatuer programmer here, just need some help inserting a * between a
coefficient and a variable to later be evaled. Need some help
referencing back to the (\d+) the number in front of a variable.  Also
need to do this with )( inserting a * in between them. Any help would be
great.

equation = "5x"
if equation =~ /(\d+)x/
          equation =equation.gsub((/(\d+)x/),(\1 + "*" + "x"))
end

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