Change Object#either? to Object#among? -- thanks to @jamesarosen for the suggestion!

38 files changed, 44 insertions, 44 deletions

diff --git a/actionpack/lib/action_dispatch/routing/mapper.rb b/actionpack/lib/action_dispatch/routing/mapper.rb
index d054028bc3..13aef18ee1 100644
--- a/actionpack/lib/action_dispatch/routing/mapper.rb
+++ b/actionpack/lib/action_dispatch/routing/mapper.rb
@@ -1346,11 +1346,11 @@ module ActionDispatch
           end
 
           def resource_scope? #:nodoc:
-            @scope[:scope_level].either?(:resource, :resources)
+            @scope[:scope_level].among?(:resource, :resources)
           end
 
           def resource_method_scope? #:nodoc:
-            @scope[:scope_level].either?(:collection, :member, :new)
+            @scope[:scope_level].among?(:collection, :member, :new)
           end
 
           def with_exclusive_scope
diff --git a/actionpack/lib/action_dispatch/testing/assertions/response.rb b/actionpack/lib/action_dispatch/testing/assertions/response.rb
index d3e7fa388f..16a6b93ce8 100644
--- a/actionpack/lib/action_dispatch/testing/assertions/response.rb
+++ b/actionpack/lib/action_dispatch/testing/assertions/response.rb
@@ -35,7 +35,7 @@ module ActionDispatch
       def assert_response(type, message = nil)
         validate_request!
 
-        if type.either?(:success, :missing, :redirect, :error) && @response.send("#{type}?")
+        if type.among?(:success, :missing, :redirect, :error) && @response.send("#{type}?")
           assert_block("") { true } # to count the assertion
         elsif type.is_a?(Fixnum) && @response.response_code == type
           assert_block("") { true } # to count the assertion
diff --git a/actionpack/lib/action_dispatch/testing/assertions/selector.rb b/actionpack/lib/action_dispatch/testing/assertions/selector.rb
index 3346fa2a04..f41d3e5ddb 100644
--- a/actionpack/lib/action_dispatch/testing/assertions/selector.rb
+++ b/actionpack/lib/action_dispatch/testing/assertions/selector.rb
@@ -442,7 +442,7 @@ module ActionDispatch
 
         if matches
           assert_block("") { true } # to count the assertion
-          if block_given? && !rjs_type.either?(:remove, :show, :hide, :toggle)
+          if block_given? && !rjs_type.among?(:remove, :show, :hide, :toggle)
             begin
               @selected ||= nil
               in_scope, @selected = @selected, matches
diff --git a/actionpack/lib/action_dispatch/testing/integration.rb b/actionpack/lib/action_dispatch/testing/integration.rb
index a508020368..174babb9aa 100644
--- a/actionpack/lib/action_dispatch/testing/integration.rb
+++ b/actionpack/lib/action_dispatch/testing/integration.rb
@@ -321,7 +321,7 @@ module ActionDispatch
         define_method(method) do |*args|
           reset! unless integration_session
           # reset the html_document variable, but only for new get/post calls
-          @html_document = nil unless method.either?("cookies", "assigns")
+          @html_document = nil unless method.among?("cookies", "assigns")
           integration_session.__send__(method, *args).tap do
             copy_session_variables!
           end
diff --git a/actionpack/test/controller/mime_responds_test.rb b/actionpack/test/controller/mime_responds_test.rb
index 6c5dc09011..be5866e5aa 100644
--- a/actionpack/test/controller/mime_responds_test.rb
+++ b/actionpack/test/controller/mime_responds_test.rb
@@ -159,7 +159,7 @@ class RespondToController < ActionController::Base
 
   protected
     def set_layout
-      if action_name.either?("all_types_with_layout", "iphone_with_html_response_type")
+      if action_name.among?("all_types_with_layout", "iphone_with_html_response_type")
         "respond_to/layouts/standard"
       elsif action_name == "iphone_with_html_response_type_without_layout"
         "respond_to/layouts/missing"
diff --git a/actionpack/test/dispatch/routing_test.rb b/actionpack/test/dispatch/routing_test.rb
index 8d23d63ebb..cf7a5aaa3b 100644
--- a/actionpack/test/dispatch/routing_test.rb
+++ b/actionpack/test/dispatch/routing_test.rb
@@ -496,7 +496,7 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
         resources :todos, :id => /\d+/
       end
 
-      scope '/countries/:country', :constraints => lambda { |params, req| params[:country].either?("all", "France") } do
+      scope '/countries/:country', :constraints => lambda { |params, req| params[:country].among?("all", "France") } do
         match '/',       :to => 'countries#index'
         match '/cities', :to => 'countries#cities'
       end
diff --git a/actionpack/test/template/form_helper_test.rb b/actionpack/test/template/form_helper_test.rb
index fa0709179b..435ce81238 100644
--- a/actionpack/test/template/form_helper_test.rb
+++ b/actionpack/test/template/form_helper_test.rb
@@ -1744,7 +1744,7 @@ class FormHelperTest < ActionView::TestCase
   def snowman(method = nil)
     txt =  %{<div style="margin:0;padding:0;display:inline">}
     txt << %{<input name="utf8" type="hidden" value="&#x2713;" />}
-    if method && !method.to_s.either?('get', 'post')
+    if method && !method.to_s.among?('get', 'post')
       txt << %{<input name="_method" type="hidden" value="#{method}" />}
     end
     txt << %{</div>}
diff --git a/actionpack/test/template/form_options_helper_test.rb b/actionpack/test/template/form_options_helper_test.rb
index 6112bb7b20..76236aee41 100644
--- a/actionpack/test/template/form_options_helper_test.rb
+++ b/actionpack/test/template/form_options_helper_test.rb
@@ -83,7 +83,7 @@ class FormOptionsHelperTest < ActionView::TestCase
   def test_collection_options_with_proc_for_disabled
     assert_dom_equal(
       "<option value=\"&lt;Abe&gt;\">&lt;Abe&gt; went home</option>\n<option value=\"Babe\" disabled=\"disabled\">Babe went home</option>\n<option value=\"Cabe\" disabled=\"disabled\">Cabe went home</option>",
-      options_from_collection_for_select(dummy_posts, "author_name", "title", :disabled => lambda{|p| p.author_name.either?("Babe", "Cabe") })
+      options_from_collection_for_select(dummy_posts, "author_name", "title", :disabled => lambda{|p| p.author_name.among?("Babe", "Cabe") })
     )
   end
 
diff --git a/actionpack/test/template/form_tag_helper_test.rb b/actionpack/test/template/form_tag_helper_test.rb
index 2d6e71d39a..aa2114ff79 100644
--- a/actionpack/test/template/form_tag_helper_test.rb
+++ b/actionpack/test/template/form_tag_helper_test.rb
@@ -14,7 +14,7 @@ class FormTagHelperTest < ActionView::TestCase
 
     txt =  %{<div style="margin:0;padding:0;display:inline">}
     txt << %{<input name="utf8" type="hidden" value="&#x2713;" />}
-    if method && !method.to_s.either?('get','post')
+    if method && !method.to_s.among?('get','post')
       txt << %{<input name="_method" type="hidden" value="#{method}" />}
     end
     txt << %{</div>}
diff --git a/activemodel/lib/active_model/validator.rb b/activemodel/lib/active_model/validator.rb
index 64fe99b62d..5f7f7a6ad6 100644
--- a/activemodel/lib/active_model/validator.rb
+++ b/activemodel/lib/active_model/validator.rb
@@ -68,7 +68,7 @@ module ActiveModel #:nodoc:
   #
   #   class TitleValidator < ActiveModel::EachValidator
   #     def validate_each(record, attribute, value)
-  #       record.errors[attribute] << 'must be Mr. Mrs. or Dr.' unless value.either?('Mr.', 'Mrs.', 'Dr.')
+  #       record.errors[attribute] << 'must be Mr. Mrs. or Dr.' unless value.among?('Mr.', 'Mrs.', 'Dr.')
   #     end
   #   end
   #
diff --git a/activerecord/lib/active_record/associations/association.rb b/activerecord/lib/active_record/associations/association.rb
index b250783d9e..66f6477ec5 100644
--- a/activerecord/lib/active_record/associations/association.rb
+++ b/activerecord/lib/active_record/associations/association.rb
@@ -164,7 +164,7 @@ module ActiveRecord
         def creation_attributes
           attributes = {}
 
-          if reflection.macro.either?(:has_one, :has_many) && !options[:through]
+          if reflection.macro.among?(:has_one, :has_many) && !options[:through]
             attributes[reflection.foreign_key] = owner[reflection.active_record_primary_key]
 
             if reflection.options[:as]
diff --git a/activerecord/lib/active_record/associations/builder/belongs_to.rb b/activerecord/lib/active_record/associations/builder/belongs_to.rb
index 9ea37da78f..763b12f708 100644
--- a/activerecord/lib/active_record/associations/builder/belongs_to.rb
+++ b/activerecord/lib/active_record/associations/builder/belongs_to.rb
@@ -67,7 +67,7 @@ module ActiveRecord::Associations::Builder
 
       def configure_dependency
         if options[:dependent]
-          unless options[:dependent].either?(:destroy, :delete)
+          unless options[:dependent].among?(:destroy, :delete)
             raise ArgumentError, "The :dependent option expects either :destroy or :delete (#{options[:dependent].inspect})"
           end
 
diff --git a/activerecord/lib/active_record/associations/builder/has_many.rb b/activerecord/lib/active_record/associations/builder/has_many.rb
index 3b489d9647..67ce339380 100644
--- a/activerecord/lib/active_record/associations/builder/has_many.rb
+++ b/activerecord/lib/active_record/associations/builder/has_many.rb
@@ -16,7 +16,7 @@ module ActiveRecord::Associations::Builder
 
       def configure_dependency
         if options[:dependent]
-          unless options[:dependent].either?(:destroy, :delete_all, :nullify, :restrict)
+          unless options[:dependent].among?(:destroy, :delete_all, :nullify, :restrict)
             raise ArgumentError, "The :dependent option expects either :destroy, :delete_all, " \
                                  ":nullify or :restrict (#{options[:dependent].inspect})"
           end
diff --git a/activerecord/lib/active_record/associations/builder/has_one.rb b/activerecord/lib/active_record/associations/builder/has_one.rb
index 7efe2ec74d..18d7117bb7 100644
--- a/activerecord/lib/active_record/associations/builder/has_one.rb
+++ b/activerecord/lib/active_record/associations/builder/has_one.rb
@@ -29,7 +29,7 @@ module ActiveRecord::Associations::Builder
 
       def configure_dependency
         if options[:dependent]
-          unless options[:dependent].either?(:destroy, :delete, :nullify, :restrict)
+          unless options[:dependent].among?(:destroy, :delete, :nullify, :restrict)
             raise ArgumentError, "The :dependent option expects either :destroy, :delete, " \
                                  ":nullify or :restrict (#{options[:dependent].inspect})"
           end
diff --git a/activerecord/lib/active_record/associations/has_one_association.rb b/activerecord/lib/active_record/associations/has_one_association.rb
index 82f5696ad8..aaa8b97389 100644
--- a/activerecord/lib/active_record/associations/has_one_association.rb
+++ b/activerecord/lib/active_record/associations/has_one_association.rb
@@ -52,7 +52,7 @@ module ActiveRecord
         end
 
         def remove_target!(method)
-          if method.either?(:delete, :destroy)
+          if method.among?(:delete, :destroy)
             target.send(method)
           else
             nullify_owner_attributes(target)
diff --git a/activerecord/lib/active_record/attribute_methods/time_zone_conversion.rb b/activerecord/lib/active_record/attribute_methods/time_zone_conversion.rb
index 032a3135f0..67b0e77a25 100644
--- a/activerecord/lib/active_record/attribute_methods/time_zone_conversion.rb
+++ b/activerecord/lib/active_record/attribute_methods/time_zone_conversion.rb
@@ -59,7 +59,7 @@ module ActiveRecord
 
         private
           def create_time_zone_conversion_attribute?(name, column)
-            time_zone_aware_attributes && !self.skip_time_zone_conversion_for_attributes.include?(name.to_sym) && column.type.either?(:datetime, :timestamp)
+            time_zone_aware_attributes && !self.skip_time_zone_conversion_for_attributes.include?(name.to_sym) && column.type.among?(:datetime, :timestamp)
           end
       end
     end
diff --git a/activerecord/lib/active_record/railties/databases.rake b/activerecord/lib/active_record/railties/databases.rake
index a1b0270d1b..944a29a3e6 100644
--- a/activerecord/lib/active_record/railties/databases.rake
+++ b/activerecord/lib/active_record/railties/databases.rake
@@ -137,7 +137,7 @@ db_namespace = namespace :db do
   end
 
   def local_database?(config, &block)
-    if config['host'].either?("127.0.0.1", "localhost") || config['host'].blank?
+    if config['host'].among?("127.0.0.1", "localhost") || config['host'].blank?
       yield
     else
       $stderr.puts "This task only modifies local databases. #{config['database']} is on a remote host."
diff --git a/activerecord/lib/active_record/reflection.rb b/activerecord/lib/active_record/reflection.rb
index 82561e86cf..eac6a5dcad 100644
--- a/activerecord/lib/active_record/reflection.rb
+++ b/activerecord/lib/active_record/reflection.rb
@@ -164,7 +164,7 @@ module ActiveRecord
 
       def initialize(macro, name, options, active_record)
         super
-        @collection = macro.either?(:has_many, :has_and_belongs_to_many)
+        @collection = macro.among?(:has_many, :has_and_belongs_to_many)
       end
 
       # Returns a new, unsaved instance of the associated class. +options+ will
diff --git a/activerecord/lib/rails/generators/active_record/session_migration/session_migration_generator.rb b/activerecord/lib/rails/generators/active_record/session_migration/session_migration_generator.rb
index e803ee5764..d80c8ba996 100644
--- a/activerecord/lib/rails/generators/active_record/session_migration/session_migration_generator.rb
+++ b/activerecord/lib/rails/generators/active_record/session_migration/session_migration_generator.rb
@@ -14,7 +14,7 @@ module ActiveRecord
 
         def session_table_name
           current_table_name = ActiveRecord::SessionStore::Session.table_name
-          if current_table_name.either?("sessions", "session")
+          if current_table_name.among?("sessions", "session")
             current_table_name = (ActiveRecord::Base.pluralize_table_names ? 'session'.pluralize : 'session')
           end
           current_table_name
diff --git a/activerecord/test/cases/attribute_methods_test.rb b/activerecord/test/cases/attribute_methods_test.rb
index aaf2435cd9..a3c5c14758 100644
--- a/activerecord/test/cases/attribute_methods_test.rb
+++ b/activerecord/test/cases/attribute_methods_test.rb
@@ -639,7 +639,7 @@ class AttributeMethodsTest < ActiveRecord::TestCase
   end
 
   def time_related_columns_on_topic
-    Topic.columns.select { |c| c.type.either?(:time, :date, :datetime, :timestamp) }
+    Topic.columns.select { |c| c.type.among?(:time, :date, :datetime, :timestamp) }
   end
 
   def serialized_columns_on_topic
diff --git a/activerecord/test/cases/defaults_test.rb b/activerecord/test/cases/defaults_test.rb
index 57709f0c71..42b14bd25c 100644
--- a/activerecord/test/cases/defaults_test.rb
+++ b/activerecord/test/cases/defaults_test.rb
@@ -95,7 +95,7 @@ if current_adapter?(:MysqlAdapter) or current_adapter?(:Mysql2Adapter)
       assert_equal 0, klass.columns_hash['zero'].default
       assert !klass.columns_hash['zero'].null
       # 0 in MySQL 4, nil in 5.
-      assert klass.columns_hash['omit'].default.either?(0, nil)
+      assert klass.columns_hash['omit'].default.among?(0, nil)
       assert !klass.columns_hash['omit'].null
 
       assert_raise(ActiveRecord::StatementInvalid) { klass.create! }
diff --git a/activeresource/lib/active_resource/connection.rb b/activeresource/lib/active_resource/connection.rb
index 09d0659b43..e286362f87 100644
--- a/activeresource/lib/active_resource/connection.rb
+++ b/activeresource/lib/active_resource/connection.rb
@@ -278,7 +278,7 @@ module ActiveResource
       def legitimize_auth_type(auth_type)
         return :basic if auth_type.nil?
         auth_type = auth_type.to_sym
-        auth_type.either?(:basic, :digest) ? auth_type : :basic
+        auth_type.among?(:basic, :digest) ? auth_type : :basic
       end
   end
 end
diff --git a/activeresource/test/cases/http_mock_test.rb b/activeresource/test/cases/http_mock_test.rb
index 542ce38ba3..dfb097315e 100644
--- a/activeresource/test/cases/http_mock_test.rb
+++ b/activeresource/test/cases/http_mock_test.rb
@@ -193,7 +193,7 @@ class HttpMockTest < ActiveSupport::TestCase
   end
 
   def request(method, path, headers = {}, body = nil)
-    if method.either?(:put, :post)
+    if method.among?(:put, :post)
       @http.send(method, path, body, headers)
     else
       @http.send(method, path, headers)
diff --git a/activesupport/CHANGELOG b/activesupport/CHANGELOG
index 8e7e2d188b..eb027795a8 100644
--- a/activesupport/CHANGELOG
+++ b/activesupport/CHANGELOG
@@ -1,6 +1,6 @@
 *Rails 3.1.0 (unreleased)*
 
-* Add Object#in? to test if an object is included in another object, and Object#either? to test if an object is included in a list of objects which will be passed as arguments. [Prem Sichanugrist, Brian Morearty, John Reitano]
+* Add Object#in? to test if an object is included in another object, and Object#among? to test if an object is included in a list of objects which will be passed as arguments. [Prem Sichanugrist, Brian Morearty, John Reitano]
 
 * LocalCache strategy is now a real middleware class, not an anonymous class
 posing for pictures.
diff --git a/activesupport/lib/active_support/cache/file_store.rb b/activesupport/lib/active_support/cache/file_store.rb
index 5eeb17efd5..bdef47a237 100644
--- a/activesupport/lib/active_support/cache/file_store.rb
+++ b/activesupport/lib/active_support/cache/file_store.rb
@@ -21,7 +21,7 @@ module ActiveSupport
       end
 
       def clear(options = nil)
-        root_dirs = Dir.entries(cache_path).reject{|f| f.either?('.', '..')}
+        root_dirs = Dir.entries(cache_path).reject{|f| f.among?('.', '..')}
         FileUtils.rm_r(root_dirs.collect{|f| File.join(cache_path, f)})
       end
 
@@ -162,7 +162,7 @@ module ActiveSupport
         # Delete empty directories in the cache.
         def delete_empty_directories(dir)
           return if dir == cache_path
-          if Dir.entries(dir).reject{|f| f.either?('.', '..')}.empty?
+          if Dir.entries(dir).reject{|f| f.among?('.', '..')}.empty?
             File.delete(dir) rescue nil
             delete_empty_directories(File.dirname(dir))
           end
diff --git a/activesupport/lib/active_support/callbacks.rb b/activesupport/lib/active_support/callbacks.rb
index 738ce0e994..6a0bffb6d7 100644
--- a/activesupport/lib/active_support/callbacks.rb
+++ b/activesupport/lib/active_support/callbacks.rb
@@ -413,7 +413,7 @@ module ActiveSupport
       # CallbackChain.
       #
       def __update_callbacks(name, filters = [], block = nil) #:nodoc:
-        type = filters.first.either?(:before, :after, :around) ? filters.shift : :before
+        type = filters.first.among?(:before, :after, :around) ? filters.shift : :before
         options = filters.last.is_a?(Hash) ? filters.pop : {}
         filters.unshift(block) if block
 
diff --git a/activesupport/lib/active_support/core_ext/object/inclusion.rb b/activesupport/lib/active_support/core_ext/object/inclusion.rb
index 79e9fd6c88..cf89288aed 100644
--- a/activesupport/lib/active_support/core_ext/object/inclusion.rb
+++ b/activesupport/lib/active_support/core_ext/object/inclusion.rb
@@ -12,9 +12,9 @@ class Object
   # Returns true if this object is included in the argument list. Usage:
   #
   #   username = "sikachu"
-  #   username.either?("josevalim", "dhh", "wycats") # => false
+  #   username.among?("josevalim", "dhh", "wycats") # => false
   #
-  def either?(*objects)
+  def among?(*objects)
     objects.include?(self)
   end
 end
diff --git a/activesupport/lib/active_support/time_with_zone.rb b/activesupport/lib/active_support/time_with_zone.rb
index 3b053d7830..6b9120e51f 100644
--- a/activesupport/lib/active_support/time_with_zone.rb
+++ b/activesupport/lib/active_support/time_with_zone.rb
@@ -345,7 +345,7 @@ module ActiveSupport
       end
 
       def duration_of_variable_length?(obj)
-        ActiveSupport::Duration === obj && obj.parts.any? {|p| p[0].either?(:years, :months, :days) }
+        ActiveSupport::Duration === obj && obj.parts.any? {|p| p[0].among?(:years, :months, :days) }
       end
   end
 end
diff --git a/activesupport/test/core_ext/object/inclusion_test.rb b/activesupport/test/core_ext/object/inclusion_test.rb
index b4207c20ea..25120deb81 100644
--- a/activesupport/test/core_ext/object/inclusion_test.rb
+++ b/activesupport/test/core_ext/object/inclusion_test.rb
@@ -31,9 +31,9 @@ class InTest < Test::Unit::TestCase
   end
 
   def test_either
-    assert 1.either?(1,2,3)
-    assert !5.either?(1,2,3)
-    assert [1,2,3].either?([1,2,3], 2, [3,4,5])
+    assert 1.among?(1,2,3)
+    assert !5.among?(1,2,3)
+    assert [1,2,3].among?([1,2,3], 2, [3,4,5])
   end
 
   module A
diff --git a/activesupport/test/transliterate_test.rb b/activesupport/test/transliterate_test.rb
index 09271b759d..90b40b5478 100644
--- a/activesupport/test/transliterate_test.rb
+++ b/activesupport/test/transliterate_test.rb
@@ -16,7 +16,7 @@ class TransliterateTest < Test::Unit::TestCase
     # create string with range of Unicode"s western characters with
     # diacritics, excluding the division and multiplication signs which for
     # some reason or other are floating in the middle of all the letters.
-    string = (0xC0..0x17E).to_a.reject {|c| c.either?(0xD7, 0xF7)}.pack("U*")
+    string = (0xC0..0x17E).to_a.reject {|c| c.among?(0xD7, 0xF7)}.pack("U*")
     string.each_char do |char|
       assert_match %r{^[a-zA-Z']*$}, ActiveSupport::Inflector.transliterate(string)
     end
diff --git a/railties/guides/rails_guides/textile_extensions.rb b/railties/guides/rails_guides/textile_extensions.rb
index f1486a7c10..9beeefb551 100644
--- a/railties/guides/rails_guides/textile_extensions.rb
+++ b/railties/guides/rails_guides/textile_extensions.rb
@@ -5,7 +5,7 @@ module RailsGuides
     def notestuff(body)
       body.gsub!(/^(IMPORTANT|CAUTION|WARNING|NOTE|INFO)[.:](.*)$/) do |m|
         css_class = $1.downcase
-        css_class = 'warning' if css_class.either?('caution', 'important')
+        css_class = 'warning' if css_class.among?('caution', 'important')
 
         result = "<div class='#{css_class}'><p>"
         result << $2.strip
@@ -35,7 +35,7 @@ module RailsGuides
     def code(body)
       body.gsub!(%r{<(yaml|shell|ruby|erb|html|sql|plain)>(.*?)</\1>}m) do |m|
         es = ERB::Util.h($2)
-        css_class = $1.either?('erb', 'shell') ? 'html' : $1
+        css_class = $1.among?('erb', 'shell') ? 'html' : $1
         %{<notextile><div class="code_container"><code class="#{css_class}">#{es}</code></div></notextile>}
       end
     end
diff --git a/railties/lib/rails/commands.rb b/railties/lib/rails/commands.rb
index 28dff23890..7108d4157e 100644
--- a/railties/lib/rails/commands.rb
+++ b/railties/lib/rails/commands.rb
@@ -71,7 +71,7 @@ when '--version', '-v'
   require 'rails/commands/application'
 
 else
-  puts "Error: Command not recognized" unless command.either?('-h', '--help')
+  puts "Error: Command not recognized" unless command.among?('-h', '--help')
   puts <<-EOT
 Usage: rails COMMAND [ARGS]
 
diff --git a/railties/lib/rails/commands/benchmarker.rb b/railties/lib/rails/commands/benchmarker.rb
index ecdcccfd8d..e10ec8fd38 100644
--- a/railties/lib/rails/commands/benchmarker.rb
+++ b/railties/lib/rails/commands/benchmarker.rb
@@ -1,6 +1,6 @@
 require 'active_support/core_ext/object/inclusion'
 
-if ARGV.first.either?(nil, "-h", "--help")
+if ARGV.first.among?(nil, "-h", "--help")
   puts "Usage: rails benchmarker [times] 'Person.expensive_way' 'Person.another_expensive_way' ..."
   exit 1
 end
diff --git a/railties/lib/rails/commands/destroy.rb b/railties/lib/rails/commands/destroy.rb
index 829d29dad7..d082ba592c 100644
--- a/railties/lib/rails/commands/destroy.rb
+++ b/railties/lib/rails/commands/destroy.rb
@@ -3,7 +3,7 @@ require 'active_support/core_ext/object/inclusion'
 
 Rails::Generators.configure!
 
-if ARGV.first.either?(nil, "-h", "--help")
+if ARGV.first.among?(nil, "-h", "--help")
   Rails::Generators.help 'destroy'
   exit
 end
diff --git a/railties/lib/rails/commands/generate.rb b/railties/lib/rails/commands/generate.rb
index bef4c6df14..789e5ebedb 100644
--- a/railties/lib/rails/commands/generate.rb
+++ b/railties/lib/rails/commands/generate.rb
@@ -3,7 +3,7 @@ require 'active_support/core_ext/object/inclusion'
 
 Rails::Generators.configure!
 
-if ARGV.first.either?(nil, "-h", "--help")
+if ARGV.first.among?(nil, "-h", "--help")
   Rails::Generators.help 'generate'
   exit
 end
diff --git a/railties/lib/rails/commands/profiler.rb b/railties/lib/rails/commands/profiler.rb
index baa3baaec0..d3195a204e 100644
--- a/railties/lib/rails/commands/profiler.rb
+++ b/railties/lib/rails/commands/profiler.rb
@@ -1,6 +1,6 @@
 require 'active_support/core_ext/object/inclusion'
 
-if ARGV.first.either?(nil, "-h", "--help")
+if ARGV.first.among?(nil, "-h", "--help")
   $stderr.puts "Usage: rails profiler 'Person.expensive_method(10)' [times] [flat|graph|graph_html]"
   exit(1)
 end
diff --git a/railties/lib/rails/generators/base.rb b/railties/lib/rails/generators/base.rb
index e2c19340f4..2b0eaea3a4 100644
--- a/railties/lib/rails/generators/base.rb
+++ b/railties/lib/rails/generators/base.rb
@@ -165,7 +165,7 @@ module Rails
         names.each do |name|
           defaults = if options[:type] == :boolean
             { }
-          elsif default_value_for_option(name, options).either?(true, false)
+          elsif default_value_for_option(name, options).among?(true, false)
             { :banner => "" }
           else
             { :desc => "#{name.to_s.humanize} to be invoked", :banner => "NAME" }
diff --git a/railties/lib/rails/generators/generated_attribute.rb b/railties/lib/rails/generators/generated_attribute.rb
index 8ed3b18872..f85375b2a3 100644
--- a/railties/lib/rails/generators/generated_attribute.rb
+++ b/railties/lib/rails/generators/generated_attribute.rb
@@ -45,7 +45,7 @@ module Rails
       end
 
       def reference?
-        self.type.either?(:references, :belongs_to)
+        self.type.among?(:references, :belongs_to)
       end
     end
   end