probability.rb in facets-1.2.0

- old
+ new
@@ -1,59 +2 @@
-#--
-# Credit goes to Brian Schröder for current code
-# and Derek for original.
-#++
-module Enumerable
-
-  # Generates a hash mapping each unique symbol in the array
-  # to the relative frequency, i.e. the probablity, of
-  # it appearence.
-  def probability
-    probs = Hash.new(0.0)
-    size = 0.0
-    each do | e |
-      probs[e] += 1.0
-      size += 1.0
-    end
-    probs.keys.each { |e| probs[e] /= size }
-    probs
-  end
-
-# old def
-#
-#   def probability
-#     arr = self.to_a
-#     probHash = Hash.new
-#     size = arr.size.to_f
-#     arr.uniq.each do |i|
-#       ct = arr.inject(0) do |mem,obj|
-#         obj.eql?(i) ? (mem+1) : mem
-#       end
-#       probHash[i] = ct.to_f/size
-#     end
-#     probHash
-#   end
-
-end
-
-
-
-#  _____         _
-# |_   _|__  ___| |_
-#   | |/ _ \/ __| __|
-#   | |  __/\__ \ |_
-#   |_|\___||___/\__|
-#
-=begin test
-
-  require 'test/unit'
-
-  class TCEnumerable < Test::Unit::TestCase
-
-    def test_probability
-      assert_equal( {'a'=>0.5,'b'=>0.5}, %w{a b}.probability )
-      assert_equal( {'tom'=>0.5,'boy'=>0.5}, %w{tom boy}.probability )
-    end
-
-  end
-
-=end
+require 'facets/core/enumerable/probability.rb'
\ No newline at end of file