Class: LooseTightDictionary::Score

Inherits:
Object
  • Object
show all
Extended by:
ActiveSupport::Memoizable
Defined in:
lib/loose_tight_dictionary/score.rb

Constant Summary collapse

SPACE = 
' '

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(str1, str2) ⇒ Score

Returns a new instance of Score.



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# File 'lib/loose_tight_dictionary/score.rb', line 11

def initialize(str1, str2)
  @str1 = str1.downcase
  @str2 = str2.downcase
end

Instance Attribute Details

#str1 ⇒ Object (readonly)

Returns the value of attribute str1.



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# File 'lib/loose_tight_dictionary/score.rb', line 9

def str1
  @str1
end

#str2 ⇒ Object (readonly)

Returns the value of attribute str2.



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# File 'lib/loose_tight_dictionary/score.rb', line 9

def str2
  @str2
end

Instance Method Details

#<=>(other) ⇒ Object 



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# File 'lib/loose_tight_dictionary/score.rb', line 20

def <=>(other)
  by_dices_coefficient = (dices_coefficient <=> other.dices_coefficient)
  if by_dices_coefficient == 0
    levenshtein <=> other.levenshtein
  else
    by_dices_coefficient
  end
end

#dices_coefficient ⇒ Object

stackoverflow.com/questions/653157/a-better-similarity-ranking-algorithm-for-variable-length-strings



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# File 'lib/loose_tight_dictionary/score.rb', line 47

def dices_coefficient
  str1.pair_distance_similar str2
end

#inspect ⇒ Object 



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# File 'lib/loose_tight_dictionary/score.rb', line 16

def inspect
  %{#<Score: dices_coefficient=#{dices_coefficient} levenshtein=#{levenshtein}>}
end

#levenshtein ⇒ Object

extracted/adapted from the text gem version 1.0.2 normalization added for utf-8 strings lib/text/levenshtein.rb



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# File 'lib/loose_tight_dictionary/score.rb', line 80

def levenshtein
  str1.levenshtein_similar str2
end

#utf8? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/loose_tight_dictionary/score.rb', line 29

def utf8?
  (defined?(::Encoding) ? str1.encoding.to_s : $KCODE).downcase.start_with?('u')
end