diff options
Diffstat (limited to 'railties')
| -rw-r--r-- | railties/guides/source/active_support_core_extensions.textile | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/railties/guides/source/active_support_core_extensions.textile b/railties/guides/source/active_support_core_extensions.textile index ce87919b89..278d27ec67 100644 --- a/railties/guides/source/active_support_core_extensions.textile +++ b/railties/guides/source/active_support_core_extensions.textile @@ -138,16 +138,19 @@ end NOTE: Defined in +active_support/core_ext/object/try.rb+. -h4. +metaclass+ +h4. +singleton_class+ -The method +metaclass+ returns the singleton class on any object: +The method +singleton_class+ returns the singleton class of the receiver: <ruby> -String.metaclass # => #<Class:String> -String.new.metaclass # => #<Class:#<String:0x17a1d1c>> +String.singleton_class # => #<Class:String> +String.new.singleton_class # => #<Class:#<String:0x17a1d1c>> </ruby> -NOTE: Defined in +active_support/core_ext/object/metaclass.rb+. +WARNING: Fixnums and symbols have no singleton classes, +singleton_class+ +raises +TypeError+ on them. + +NOTE: Defined in +active_support/core_ext/object/singleton_class.rb+. h4. +class_eval(*args, &block)+ @@ -168,7 +171,7 @@ class Proc end </ruby> -NOTE: Defined in +active_support/core_ext/object/metaclass.rb+. +NOTE: Defined in +active_support/core_ext/object/singleton_class.rb+. h4. +acts_like?(duck)+ |