Measure the distance between two strings with Ruby?

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Much easier and fast due to native C binding:

gem install levenshtein-ffi
gem install levenshtein

require 'levenshtein'

Levenshtein.normalized_distance string1, string2, threshold

http://rubygems.org/gems/levenshtein
http://rubydoc.info/gems/levenshtein/0.2.2/frames

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