Convert array extension modules to class reopens

activesupport/lib/active_support/core_ext/array.rb

-require 'active_support/core_ext/util'
 require 'active_support/core_ext/array/wrap'
-ActiveSupport.core_ext Array, %w(access conversions extract_options grouping random_access)
+require 'active_support/core_ext/array/access'
+require 'active_support/core_ext/array/conversions'
+require 'active_support/core_ext/array/extract_options'
+require 'active_support/core_ext/array/grouping'
+require 'active_support/core_ext/array/random_access'

activesupport/lib/active_support/core_ext/array/access.rb

-module ActiveSupport #:nodoc:
-  module CoreExtensions #:nodoc:
-    module Array #:nodoc:
-      # Makes it easier to access parts of an array.
-      module Access
-        # Returns the tail of the array from +position+.
-        #
-        #   %w( a b c d ).from(0)  # => %w( a b c d )
-        #   %w( a b c d ).from(2)  # => %w( c d )
-        #   %w( a b c d ).from(10) # => nil
-        #   %w().from(0)           # => nil
-        def from(position)
-          self[position..-1]
-        end
-        
-        # Returns the beginning of the array up to +position+.
-        #
-        #   %w( a b c d ).to(0)  # => %w( a )
-        #   %w( a b c d ).to(2)  # => %w( a b c )
-        #   %w( a b c d ).to(10) # => %w( a b c d )
-        #   %w().to(0)           # => %w()
-        def to(position)
-          self[0..position]
-        end
+class Array
+  # Returns the tail of the array from +position+.
+  #
+  #   %w( a b c d ).from(0)  # => %w( a b c d )
+  #   %w( a b c d ).from(2)  # => %w( c d )
+  #   %w( a b c d ).from(10) # => nil
+  #   %w().from(0)           # => nil
+  def from(position)
+    self[position..-1]
+  end
 
-        # Equal to <tt>self[1]</tt>.
-        def second
-          self[1]
-        end
+  # Returns the beginning of the array up to +position+.
+  #
+  #   %w( a b c d ).to(0)  # => %w( a )
+  #   %w( a b c d ).to(2)  # => %w( a b c )
+  #   %w( a b c d ).to(10) # => %w( a b c d )
+  #   %w().to(0)           # => %w()
+  def to(position)
+    self[0..position]
+  end
 
-        # Equal to <tt>self[2]</tt>.
-        def third
-          self[2]
-        end
+  # Equal to <tt>self[1]</tt>.
+  def second
+    self[1]
+  end
 
-        # Equal to <tt>self[3]</tt>.
-        def fourth
-          self[3]
-        end
+  # Equal to <tt>self[2]</tt>.
+  def third
+    self[2]
+  end
 
-        # Equal to <tt>self[4]</tt>.
-        def fifth
-          self[4]
-        end
+  # Equal to <tt>self[3]</tt>.
+  def fourth
+    self[3]
+  end
+
+  # Equal to <tt>self[4]</tt>.
+  def fifth
+    self[4]
+  end
 
-        # Equal to <tt>self[41]</tt>. Also known as accessing "the reddit".
-        def forty_two
-          self[41]
-        end
-      end
-    end
+  # Equal to <tt>self[41]</tt>. Also known as accessing "the reddit".
+  def forty_two
+    self[41]
   end
 end

activesupport/lib/active_support/core_ext/array/conversions.rb

-module ActiveSupport #:nodoc:
-  module CoreExtensions #:nodoc:
-    module Array #:nodoc:
-      module Conversions
-        # Converts the array to a comma-separated sentence where the last element is joined by the connector word. Options:
-        # * <tt>:words_connector</tt> - The sign or word used to join the elements in arrays with two or more elements (default: ", ")
-        # * <tt>:two_words_connector</tt> - The sign or word used to join the elements in arrays with two elements (default: " and ")
-        # * <tt>:last_word_connector</tt> - The sign or word used to join the last element in arrays with three or more elements (default: ", and ")
-        def to_sentence(options = {})
-          default_words_connector     = I18n.translate(:'support.array.words_connector',     :locale => options[:locale])
-          default_two_words_connector = I18n.translate(:'support.array.two_words_connector', :locale => options[:locale])
-          default_last_word_connector = I18n.translate(:'support.array.last_word_connector', :locale => options[:locale])
+class Array
+  # Converts the array to a comma-separated sentence where the last element is joined by the connector word. Options:
+  # * <tt>:words_connector</tt> - The sign or word used to join the elements in arrays with two or more elements (default: ", ")
+  # * <tt>:two_words_connector</tt> - The sign or word used to join the elements in arrays with two elements (default: " and ")
+  # * <tt>:last_word_connector</tt> - The sign or word used to join the last element in arrays with three or more elements (default: ", and ")
+  def to_sentence(options = {})
+    default_words_connector     = I18n.translate(:'support.array.words_connector',     :locale => options[:locale])
+    default_two_words_connector = I18n.translate(:'support.array.two_words_connector', :locale => options[:locale])
+    default_last_word_connector = I18n.translate(:'support.array.last_word_connector', :locale => options[:locale])
 
-          # Try to emulate to_senteces previous to 2.3
-          if options.has_key?(:connector) || options.has_key?(:skip_last_comma)
-            ::ActiveSupport::Deprecation.warn(":connector has been deprecated. Use :words_connector instead", caller) if options.has_key? :connector
-            ::ActiveSupport::Deprecation.warn(":skip_last_comma has been deprecated. Use :last_word_connector instead", caller) if options.has_key? :skip_last_comma
+    # Try to emulate to_senteces previous to 2.3
+    if options.has_key?(:connector) || options.has_key?(:skip_last_comma)
+      ::ActiveSupport::Deprecation.warn(":connector has been deprecated. Use :words_connector instead", caller) if options.has_key? :connector
+      ::ActiveSupport::Deprecation.warn(":skip_last_comma has been deprecated. Use :last_word_connector instead", caller) if options.has_key? :skip_last_comma
 
-            skip_last_comma = options.delete :skip_last_comma
-            if connector = options.delete(:connector)
-              options[:last_word_connector] ||= skip_last_comma ? connector : ", #{connector}"
-            else
-              options[:last_word_connector] ||= skip_last_comma ? default_two_words_connector : default_last_word_connector
-            end
-          end
-          
-          options.assert_valid_keys(:words_connector, :two_words_connector, :last_word_connector, :locale)       
-          options.reverse_merge! :words_connector => default_words_connector, :two_words_connector => default_two_words_connector, :last_word_connector => default_last_word_connector
-          
-          case length
-            when 0
-              ""
-            when 1
-              self[0].to_s
-            when 2
-              "#{self[0]}#{options[:two_words_connector]}#{self[1]}"
-            else
-              "#{self[0...-1].join(options[:words_connector])}#{options[:last_word_connector]}#{self[-1]}"
-          end
-        end
-        
+      skip_last_comma = options.delete :skip_last_comma
+      if connector = options.delete(:connector)
+        options[:last_word_connector] ||= skip_last_comma ? connector : ", #{connector}"
+      else
+        options[:last_word_connector] ||= skip_last_comma ? default_two_words_connector : default_last_word_connector
+      end
+    end
 
-        # Calls <tt>to_param</tt> on all its elements and joins the result with
-        # slashes. This is used by <tt>url_for</tt> in Action Pack. 
-        def to_param
-          collect { |e| e.to_param }.join '/'
-        end
+    options.assert_valid_keys(:words_connector, :two_words_connector, :last_word_connector, :locale)
+    options.reverse_merge! :words_connector => default_words_connector, :two_words_connector => default_two_words_connector, :last_word_connector => default_last_word_connector
 
-        # Converts an array into a string suitable for use as a URL query string,
-        # using the given +key+ as the param name.
-        #
-        #   ['Rails', 'coding'].to_query('hobbies') # => "hobbies%5B%5D=Rails&hobbies%5B%5D=coding"
-        def to_query(key)
-          prefix = "#{key}[]"
-          collect { |value| value.to_query(prefix) }.join '&'
-        end
+    case length
+      when 0
+        ""
+      when 1
+        self[0].to_s
+      when 2
+        "#{self[0]}#{options[:two_words_connector]}#{self[1]}"
+      else
+        "#{self[0...-1].join(options[:words_connector])}#{options[:last_word_connector]}#{self[-1]}"
+    end
+  end
 
-        def self.included(base) #:nodoc:
-          base.class_eval do
-            alias_method :to_default_s, :to_s
-            alias_method :to_s, :to_formatted_s
-          end
-        end
 
-        # Converts a collection of elements into a formatted string by calling
-        # <tt>to_s</tt> on all elements and joining them:
-        #
-        #   Blog.find(:all).to_formatted_s # => "First PostSecond PostThird Post"
-        #
-        # Adding in the <tt>:db</tt> argument as the format yields a prettier
-        # output:
-        #
-        #   Blog.find(:all).to_formatted_s(:db) # => "First Post,Second Post,Third Post"
-        def to_formatted_s(format = :default)
-          case format
-            when :db
-              if respond_to?(:empty?) && self.empty?
-                "null"
-              else
-                collect { |element| element.id }.join(",")
-              end
-            else
-              to_default_s
-          end
-        end
+  # Calls <tt>to_param</tt> on all its elements and joins the result with
+  # slashes. This is used by <tt>url_for</tt> in Action Pack.
+  def to_param
+    collect { |e| e.to_param }.join '/'
+  end
 
-        # Returns a string that represents this array in XML by sending +to_xml+
-        # to each element. Active Record collections delegate their representation
-        # in XML to this method.
-        #
-        # All elements are expected to respond to +to_xml+, if any of them does
-        # not an exception is raised.
-        #
-        # The root node reflects the class name of the first element in plural
-        # if all elements belong to the same type and that's not Hash:
-        #
-        #   customer.projects.to_xml
-        #
-        #   <?xml version="1.0" encoding="UTF-8"?>
-        #   <projects type="array">
-        #     <project>
-        #       <amount type="decimal">20000.0</amount>
-        #       <customer-id type="integer">1567</customer-id>
-        #       <deal-date type="date">2008-04-09</deal-date>
-        #       ...
-        #     </project>
-        #     <project>
-        #       <amount type="decimal">57230.0</amount>
-        #       <customer-id type="integer">1567</customer-id>
-        #       <deal-date type="date">2008-04-15</deal-date>
-        #       ...
-        #     </project>
-        #   </projects>
-        #
-        # Otherwise the root element is "records":
-        #
-        #   [{:foo => 1, :bar => 2}, {:baz => 3}].to_xml
-        #
-        #   <?xml version="1.0" encoding="UTF-8"?>
-        #   <records type="array">
-        #     <record>
-        #       <bar type="integer">2</bar>
-        #       <foo type="integer">1</foo>
-        #     </record>
-        #     <record>
-        #       <baz type="integer">3</baz>
-        #     </record>
-        #   </records>
-        #
-        # If the collection is empty the root element is "nil-classes" by default:
-        #
-        #   [].to_xml
-        #
-        #   <?xml version="1.0" encoding="UTF-8"?>
-        #   <nil-classes type="array"/>
-        #
-        # To ensure a meaningful root element use the <tt>:root</tt> option:
-        #
-        #   customer_with_no_projects.projects.to_xml(:root => "projects")
-        #
-        #   <?xml version="1.0" encoding="UTF-8"?>
-        #   <projects type="array"/>
-        #
-        # By default root children have as node name the one of the root
-        # singularized. You can change it with the <tt>:children</tt> option.
-        #
-        # The +options+ hash is passed downwards:
-        #
-        #   Message.all.to_xml(:skip_types => true)
-        #
-        #   <?xml version="1.0" encoding="UTF-8"?>
-        #   <messages>
-        #     <message>
-        #       <created-at>2008-03-07T09:58:18+01:00</created-at>
-        #       <id>1</id>
-        #       <name>1</name>
-        #       <updated-at>2008-03-07T09:58:18+01:00</updated-at>
-        #       <user-id>1</user-id>
-        #     </message>
-        #   </messages>
-        #
-        def to_xml(options = {})
-          raise "Not all elements respond to to_xml" unless all? { |e| e.respond_to? :to_xml }
-          require 'builder' unless defined?(Builder)
+  # Converts an array into a string suitable for use as a URL query string,
+  # using the given +key+ as the param name.
+  #
+  #   ['Rails', 'coding'].to_query('hobbies') # => "hobbies%5B%5D=Rails&hobbies%5B%5D=coding"
+  def to_query(key)
+    prefix = "#{key}[]"
+    collect { |value| value.to_query(prefix) }.join '&'
+  end
 
-          options[:root]     ||= all? { |e| e.is_a?(first.class) && first.class.to_s != "Hash" } ? first.class.to_s.underscore.pluralize : "records"
-          options[:children] ||= options[:root].singularize
-          options[:indent]   ||= 2
-          options[:builder]  ||= Builder::XmlMarkup.new(:indent => options[:indent])
+  # Converts a collection of elements into a formatted string by calling
+  # <tt>to_s</tt> on all elements and joining them:
+  #
+  #   Blog.find(:all).to_formatted_s # => "First PostSecond PostThird Post"
+  #
+  # Adding in the <tt>:db</tt> argument as the format yields a prettier
+  # output:
+  #
+  #   Blog.find(:all).to_formatted_s(:db) # => "First Post,Second Post,Third Post"
+  def to_formatted_s(format = :default)
+    case format
+      when :db
+        if respond_to?(:empty?) && self.empty?
+          "null"
+        else
+          collect { |element| element.id }.join(",")
+        end
+      else
+        to_default_s
+    end
+  end
+  alias_method :to_default_s, :to_s
+  alias_method :to_s, :to_formatted_s
 
-          root     = options.delete(:root).to_s
-          children = options.delete(:children)
+  # Returns a string that represents this array in XML by sending +to_xml+
+  # to each element. Active Record collections delegate their representation
+  # in XML to this method.
+  #
+  # All elements are expected to respond to +to_xml+, if any of them does
+  # not an exception is raised.
+  #
+  # The root node reflects the class name of the first element in plural
+  # if all elements belong to the same type and that's not Hash:
+  #
+  #   customer.projects.to_xml
+  #
+  #   <?xml version="1.0" encoding="UTF-8"?>
+  #   <projects type="array">
+  #     <project>
+  #       <amount type="decimal">20000.0</amount>
+  #       <customer-id type="integer">1567</customer-id>
+  #       <deal-date type="date">2008-04-09</deal-date>
+  #       ...
+  #     </project>
+  #     <project>
+  #       <amount type="decimal">57230.0</amount>
+  #       <customer-id type="integer">1567</customer-id>
+  #       <deal-date type="date">2008-04-15</deal-date>
+  #       ...
+  #     </project>
+  #   </projects>
+  #
+  # Otherwise the root element is "records":
+  #
+  #   [{:foo => 1, :bar => 2}, {:baz => 3}].to_xml
+  #
+  #   <?xml version="1.0" encoding="UTF-8"?>
+  #   <records type="array">
+  #     <record>
+  #       <bar type="integer">2</bar>
+  #       <foo type="integer">1</foo>
+  #     </record>
+  #     <record>
+  #       <baz type="integer">3</baz>
+  #     </record>
+  #   </records>
+  #
+  # If the collection is empty the root element is "nil-classes" by default:
+  #
+  #   [].to_xml
+  #
+  #   <?xml version="1.0" encoding="UTF-8"?>
+  #   <nil-classes type="array"/>
+  #
+  # To ensure a meaningful root element use the <tt>:root</tt> option:
+  #
+  #   customer_with_no_projects.projects.to_xml(:root => "projects")
+  #
+  #   <?xml version="1.0" encoding="UTF-8"?>
+  #   <projects type="array"/>
+  #
+  # By default root children have as node name the one of the root
+  # singularized. You can change it with the <tt>:children</tt> option.
+  #
+  # The +options+ hash is passed downwards:
+  #
+  #   Message.all.to_xml(:skip_types => true)
+  #
+  #   <?xml version="1.0" encoding="UTF-8"?>
+  #   <messages>
+  #     <message>
+  #       <created-at>2008-03-07T09:58:18+01:00</created-at>
+  #       <id>1</id>
+  #       <name>1</name>
+  #       <updated-at>2008-03-07T09:58:18+01:00</updated-at>
+  #       <user-id>1</user-id>
+  #     </message>
+  #   </messages>
+  #
+  def to_xml(options = {})
+    raise "Not all elements respond to to_xml" unless all? { |e| e.respond_to? :to_xml }
+    require 'builder' unless defined?(Builder)
 
-          if !options.has_key?(:dasherize) || options[:dasherize]
-            root = root.dasherize
-          end
+    options[:root]     ||= all? { |e| e.is_a?(first.class) && first.class.to_s != "Hash" } ? first.class.to_s.underscore.pluralize : "records"
+    options[:children] ||= options[:root].singularize
+    options[:indent]   ||= 2
+    options[:builder]  ||= Builder::XmlMarkup.new(:indent => options[:indent])
 
-          options[:builder].instruct! unless options.delete(:skip_instruct)
+    root     = options.delete(:root).to_s
+    children = options.delete(:children)
 
-          opts = options.merge({ :root => children })
+    if !options.has_key?(:dasherize) || options[:dasherize]
+      root = root.dasherize
+    end
 
-          xml = options[:builder]
-          if empty?
-            xml.tag!(root, options[:skip_types] ? {} : {:type => "array"})
-          else
-            xml.tag!(root, options[:skip_types] ? {} : {:type => "array"}) {
-              yield xml if block_given?
-              each { |e| e.to_xml(opts.merge({ :skip_instruct => true })) }
-            }
-          end
-        end
+    options[:builder].instruct! unless options.delete(:skip_instruct)
 
-      end
+    opts = options.merge({ :root => children })
+
+    xml = options[:builder]
+    if empty?
+      xml.tag!(root, options[:skip_types] ? {} : {:type => "array"})
+    else
+      xml.tag!(root, options[:skip_types] ? {} : {:type => "array"}) {
+        yield xml if block_given?
+        each { |e| e.to_xml(opts.merge({ :skip_instruct => true })) }
+      }
     end
   end
 end

activesupport/lib/active_support/core_ext/array/extract_options.rb

-module ActiveSupport #:nodoc:
-  module CoreExtensions #:nodoc:
-    module Array #:nodoc:
-      module ExtractOptions
-        # Extracts options from a set of arguments. Removes and returns the last
-        # element in the array if it's a hash, otherwise returns a blank hash.
-        #
-        #   def options(*args)
-        #     args.extract_options!
-        #   end
-        #
-        #   options(1, 2)           # => {}
-        #   options(1, 2, :a => :b) # => {:a=>:b}
-        def extract_options!
-          last.is_a?(::Hash) ? pop : {}
-        end
-      end
-    end
+class Array
+  # Extracts options from a set of arguments. Removes and returns the last
+  # element in the array if it's a hash, otherwise returns a blank hash.
+  #
+  #   def options(*args)
+  #     args.extract_options!
+  #   end
+  #
+  #   options(1, 2)           # => {}
+  #   options(1, 2, :a => :b) # => {:a=>:b}
+  def extract_options!
+    last.is_a?(::Hash) ? pop : {}
   end
 end

activesupport/lib/active_support/core_ext/array/grouping.rb

 require 'enumerator'
 
-module ActiveSupport #:nodoc:
-  module CoreExtensions #:nodoc:
-    module Array #:nodoc:
-      module Grouping
-        # Splits or iterates over the array in groups of size +number+,
-        # padding any remaining slots with +fill_with+ unless it is +false+.
-        # 
-        #   %w(1 2 3 4 5 6 7).in_groups_of(3) {|group| p group}
-        #   ["1", "2", "3"]
-        #   ["4", "5", "6"]
-        #   ["7", nil, nil]
-        #
-        #   %w(1 2 3).in_groups_of(2, ' ') {|group| p group}
-        #   ["1", "2"]
-        #   ["3", " "]
-        #
-        #   %w(1 2 3).in_groups_of(2, false) {|group| p group}
-        #   ["1", "2"]
-        #   ["3"]
-        def in_groups_of(number, fill_with = nil)
-          if fill_with == false
-            collection = self
-          else
-            # size % number gives how many extra we have;
-            # subtracting from number gives how many to add;
-            # modulo number ensures we don't add group of just fill.
-            padding = (number - size % number) % number
-            collection = dup.concat([fill_with] * padding)
-          end
-
-          if block_given?
-            collection.each_slice(number) { |slice| yield(slice) }
-          else
-            returning [] do |groups|
-              collection.each_slice(number) { |group| groups << group }
-            end
-          end
-        end
+class Array
+  # Splits or iterates over the array in groups of size +number+,
+  # padding any remaining slots with +fill_with+ unless it is +false+.
+  #
+  #   %w(1 2 3 4 5 6 7).in_groups_of(3) {|group| p group}
+  #   ["1", "2", "3"]
+  #   ["4", "5", "6"]
+  #   ["7", nil, nil]
+  #
+  #   %w(1 2 3).in_groups_of(2, '&nbsp;') {|group| p group}
+  #   ["1", "2"]
+  #   ["3", "&nbsp;"]
+  #
+  #   %w(1 2 3).in_groups_of(2, false) {|group| p group}
+  #   ["1", "2"]
+  #   ["3"]
+  def in_groups_of(number, fill_with = nil)
+    if fill_with == false
+      collection = self
+    else
+      # size % number gives how many extra we have;
+      # subtracting from number gives how many to add;
+      # modulo number ensures we don't add group of just fill.
+      padding = (number - size % number) % number
+      collection = dup.concat([fill_with] * padding)
+    end
 
-        # Splits or iterates over the array in +number+ of groups, padding any
-        # remaining slots with +fill_with+ unless it is +false+.
-        #
-        #   %w(1 2 3 4 5 6 7 8 9 10).in_groups(3) {|group| p group}
-        #   ["1", "2", "3", "4"]
-        #   ["5", "6", "7", nil]
-        #   ["8", "9", "10", nil]
-        #
-        #   %w(1 2 3 4 5 6 7).in_groups(3, '&nbsp;') {|group| p group}
-        #   ["1", "2", "3"]
-        #   ["4", "5", "&nbsp;"]
-        #   ["6", "7", "&nbsp;"]
-        #
-        #   %w(1 2 3 4 5 6 7).in_groups(3, false) {|group| p group}
-        #   ["1", "2", "3"]
-        #   ["4", "5"]
-        #   ["6", "7"]
-        def in_groups(number, fill_with = nil)
-          # size / number gives minor group size;
-          # size % number gives how many objects need extra accomodation;
-          # each group hold either division or division + 1 items.
-          division = size / number
-          modulo = size % number
+    if block_given?
+      collection.each_slice(number) { |slice| yield(slice) }
+    else
+      groups = []
+      collection.each_slice(number) { |group| groups << group }
+      groups
+    end
+  end
 
-          # create a new array avoiding dup
-          groups = []
-          start = 0
+  # Splits or iterates over the array in +number+ of groups, padding any
+  # remaining slots with +fill_with+ unless it is +false+.
+  #
+  #   %w(1 2 3 4 5 6 7 8 9 10).in_groups(3) {|group| p group}
+  #   ["1", "2", "3", "4"]
+  #   ["5", "6", "7", nil]
+  #   ["8", "9", "10", nil]
+  #
+  #   %w(1 2 3 4 5 6 7).in_groups(3, '&nbsp;') {|group| p group}
+  #   ["1", "2", "3"]
+  #   ["4", "5", "&nbsp;"]
+  #   ["6", "7", "&nbsp;"]
+  #
+  #   %w(1 2 3 4 5 6 7).in_groups(3, false) {|group| p group}
+  #   ["1", "2", "3"]
+  #   ["4", "5"]
+  #   ["6", "7"]
+  def in_groups(number, fill_with = nil)
+    # size / number gives minor group size;
+    # size % number gives how many objects need extra accomodation;
+    # each group hold either division or division + 1 items.
+    division = size / number
+    modulo = size % number
 
-          number.times do |index|
-            length = division + (modulo > 0 && modulo > index ? 1 : 0)
-            padding = fill_with != false &&
-              modulo > 0 && length == division ? 1 : 0
-            groups << slice(start, length).concat([fill_with] * padding)
-            start += length
-          end
+    # create a new array avoiding dup
+    groups = []
+    start = 0
 
-          if block_given?
-            groups.each{|g| yield(g) }
-          else
-            groups
-          end
-        end
+    number.times do |index|
+      length = division + (modulo > 0 && modulo > index ? 1 : 0)
+      padding = fill_with != false &&
+        modulo > 0 && length == division ? 1 : 0
+      groups << slice(start, length).concat([fill_with] * padding)
+      start += length
+    end
 
-        # Divides the array into one or more subarrays based on a delimiting +value+
-        # or the result of an optional block.
-        #
-        #   [1, 2, 3, 4, 5].split(3)                # => [[1, 2], [4, 5]]
-        #   (1..10).to_a.split { |i| i % 3 == 0 }   # => [[1, 2], [4, 5], [7, 8], [10]]
-        def split(value = nil)
-          using_block = block_given?
+    if block_given?
+      groups.each { |g| yield(g) }
+    else
+      groups
+    end
+  end
 
-          inject([[]]) do |results, element|
-            if (using_block && yield(element)) || (value == element)
-              results << []
-            else
-              results.last << element
-            end
+  # Divides the array into one or more subarrays based on a delimiting +value+
+  # or the result of an optional block.
+  #
+  #   [1, 2, 3, 4, 5].split(3)                # => [[1, 2], [4, 5]]
+  #   (1..10).to_a.split { |i| i % 3 == 0 }   # => [[1, 2], [4, 5], [7, 8], [10]]
+  def split(value = nil)
+    using_block = block_given?
 
-            results
-          end
-        end
+    inject([[]]) do |results, element|
+      if (using_block && yield(element)) || (value == element)
+        results << []
+      else
+        results.last << element
       end
+
+      results
     end
   end
 end

activesupport/lib/active_support/core_ext/array/random_access.rb

-module ActiveSupport #:nodoc:
-  module CoreExtensions #:nodoc:
-    module Array #:nodoc:
-      module RandomAccess
-        # Returns a random element from the array.
-        def rand
-          self[Kernel.rand(length)]
-        end
-      end
-    end
+class Array
+  # Returns a random element from the array.
+  def rand
+    self[Kernel.rand(length)]
   end
 end