Class: Symbol

Inherits:
Object show all
Defined in:
lib/picky/extensions/symbol.rb

Overview

Extending the Symbol class.

Instance Method Summary collapse

Instance Method Details

#double_metaphone ⇒ Object

Returns a single double metaphone code for this symbol.



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# File 'lib/picky/extensions/symbol.rb', line 8

def double_metaphone
  codes = Text::Metaphone.double_metaphone self
  codes.first.intern unless codes.empty?
end

#each_intoken(min_length = 1, max_length = -1) ⇒ Object

:keys.each_intoken # => yields each of [:keys, :key, :eys, :ke, :ey, :ys, :k, :e, :y, :s] :keys.each_intoken(2) # => yields each of [:keys, :key, :eys, :ke, :ey, :ys] :keys.each_intoken(2, 3) # => yields each of [:key, :eys, :ke, :ey, :ys] :keys.each_intoken(10, 12) # => yields nothing (min larger than sym)



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# File 'lib/picky/extensions/symbol.rb', line 56

def each_intoken min_length = 1, max_length = -1
  max_length = size + max_length + 1 if max_length < 0
  max_length = size if size < max_length
  max_length = 1 if max_length < 1

  min_length = size + min_length + 1 if min_length < 0
  min_length = 1 if min_length < 1

  this_many = size - max_length + 1
  max_length.downto(min_length) do |length|
    this_many.times do |offset|
      yield self[offset, length].intern
    end
    this_many += 1
  end
end

#each_subtoken(from_length = 1, range = nil) {|sub.intern| ... } ⇒ Object

:keys.each_subtoken # => yields each of [:keys, :key, :ke, :k] :keys.each_subtoken(2) # => yields each of [:keys, :key, :ke]

Yields:

  • (sub.intern) 


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# File 'lib/picky/extensions/symbol.rb', line 30

def each_subtoken from_length = 1, range = nil
  sub = self.id2name

  if range
    unless (range.first.zero? && range.last == -1)
      sub = sub[range]
    end
  end

  yield sub.intern

  size = sub.size
  from_length = size + from_length + 1 if from_length < 0
  from_length = size if size < from_length
  from_length = 1 if from_length < 1

  size.downto(from_length + 1) do
    yield sub.chop!.intern
  end
end

#metaphone ⇒ Object

Returns a metaphone code for this symbol.



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# File 'lib/picky/extensions/symbol.rb', line 15

def metaphone
  code = Text::Metaphone.metaphone self.to_s
  code.intern if code
end

#soundex ⇒ Object

Returns a soundex code for this symbol.



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# File 'lib/picky/extensions/symbol.rb', line 22

def soundex
  code = Text::Soundex.soundex self.to_s
  code.intern if code
end