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DamLev

DamLev implements the Damerau–Levenshtein distance algorithm. It is an algorithm that measures the distance between two strings taking into account deletions, insertions, substitutions, and transpositions. It's written in pure ruby.

Get it!

gem install dam_lev

Use it!

require 'dam_lev'

DamLev.distance("DamLev", "DamLev")  # => 0
DamLev.distance("DamLev", "Damev")   # => 1 # deletion
DamLev.distance("DamLev", "DamLiev") # => 1 # insertion
DamLev.distance("DamLev", "Dam7ev")  # => 1 # substitution
DamLev.distance("DamLev", "DameLv")  # => 1 # transposition

Note on Patches/Pull Requests

  • Fork the project.
  • Make your feature addition or bug fix.
  • Add tests for it. This is important so I don't break it in a future version unintentionally.
  • Commit, do not mess with rakefile, version, or history. (if you want to have your own version, that is fine but bump version in a commit by itself I can ignore when I pull)
  • Send me a pull request. Bonus points for topic branches.

Copyright

Copyright (c) 2010 Allen Madsen. See LICENSE for details.

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Measure the distance between two strings.

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