lib/open_classes/array/average.rb in tbpgr_utils-0.0.150 vs lib/open_classes/array/average.rb in tbpgr_utils-0.0.151

@@ -1,17 +1,17 @@
-# encoding: utf-8
-
-# Array
-class Array
-  # return average
-  #
-  # === Example
-  #
-  #   [*1..6].average # => 3.5
-  #   [1.5, 2.5].average # => 2.0
-  #   [*'a'..'z'].average # => raise TypeError
-  #
-  def average
-    fail TypeError, 'you have to use elements that is Numeric' if any? { |v|!v.is_a? Numeric }
-    reduce(0.0) { |r, v|r = r + v.to_f; r } / size
-  end
-end
+# encoding: utf-8
+
+# Array
+class Array
+  # return average
+  #
+  # === Example
+  #
+  #   [*1..6].average # => 3.5
+  #   [1.5, 2.5].average # => 2.0
+  #   [*'a'..'z'].average # => raise TypeError
+  #
+  def average
+    fail TypeError, 'you have to use elements that is Numeric' unless all? { |v|v.is_a? Numeric }
+    sum.to_f / size
+  end
+end