Module: Glymour::StructureLearning::PowerSet

Defined in:
lib/glymour.rb

Instance Method Summary collapse

Instance Method Details

#power_set ⇒ Object 



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# File 'lib/glymour.rb', line 82

def power_set
  return clone.power_set!
end

#power_set! ⇒ Object

Sets an array to its “power array” (array of subarrays)



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# File 'lib/glymour.rb', line 74

def power_set!
  return [[]] if empty?
  first = shift
  rest = power_set!
  
  rest + rest.map {|subset| [first] + subset }
end