Class: Hash

Inherits:
Object
  • Object
show all
Defined in:
lib/roulette_wheel_selection/hash/sample.rb

Instance Method Summary collapse

Instance Method Details

#roulette_wheel_selection(n = nil) ⇒ Object Also known as: sample 



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# File 'lib/roulette_wheel_selection/hash/sample.rb', line 2

def roulette_wheel_selection n=nil
  indexes = self.values.roulette_wheel_selection n

  return nil if indexes.nil?
  return self.keys[ indexes ] unless Array === indexes
  self.keys.values_at *indexes
end