Add Array#reject_values. (smackesey)

lib/core/facets/array.rb

@@ -32,6 +32,7 @@
 #require_relative 'array/op_pow.rb'             # uncommon
 require_relative 'array/recurse.rb'
 require_relative 'array/recursively.rb'
+require_relative 'array/reject_values.rb'
 require_relative 'array/splice.rb'
 require_relative 'array/split.rb'
 require_relative 'array/store.rb'

lib/core/facets/array/reject_values.rb

@@ -0,0 +1,21 @@
+class Array
+
+  # Non-destructive form of `Array#delete_values`. Unlike `delete_values`
+  # this method returns a new array.
+  #
+  # values - List of array elements to reject.
+  #
+  # Examples
+  #
+  #     [1,2,3,4,5].reject_values(2,4)  # => [1,3,5]
+  #
+  # Returns [Array]
+  #
+  # CREDIT: Sean Mackesey
+
+  def reject_values(*values)
+    reject { |x| values.include?(x) }
+  end
+
+end
+

test/core/array/test_reject_values.rb

@@ -0,0 +1,17 @@
+covers 'facets/array/reject_values'
+
+testcase Array do
+
+  method :reject_values do
+
+    test do
+      a = [1,2,3,4,5]
+      r = a.reject_values(2,4)
+      r.assert == [1,3,5]
+      a.assert = [1,2,3,4,5]  # hasn't changed
+    end
+
+  end
+
+end
+