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Methods
D

Constants

THRESHOLD = 0.7
 
WEIGHT = 0.1
 

Instance Public methods

distance(str1, str2)

Source: show | on GitHub 

# File ruby/lib/did_you_mean/jaro_winkler.rb, line 68
def distance(str1, str2)
  jaro_distance = Jaro.distance(str1, str2)

  if jaro_distance > THRESHOLD
    codepoints2  = str2.codepoints
    prefix_bonus = 0

    i = 0
    str1.each_codepoint do |char1|
      char1 == codepoints2[i] && i < 4 ? prefix_bonus += 1 : break
      i += 1
    end

    jaro_distance + (prefix_bonus * WEIGHT * (1 - jaro_distance))
  else
    jaro_distance
  end
end