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AS guide: documents Object#extend_with_included_modules_from

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Xavier Noria
2010-01-18 23:32:17 +01:00
parent cf82ddc96a
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railties/guides/source/active_support_core_extensions.textile
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@@ -388,6 +388,27 @@ C.extended_by # => [N, N2, M]
NOTE: Defined in +active_support/core_ext/object/extending.rb+.
h5. +extend_with_included_modules_from+
The method +extend_with_included_modules_from+ extends its receiver with the modules that extend its argument:
<ruby>
module M
end
class C
extend M
end
class D
end
D.extend_with_included_modules_from(C)
D.extended_by # => [M]
</ruby>
NOTE: Defined in +active_support/core_ext/object/extending.rb+.
h4. Instance Variables
Active Support provides several methods to ease access to instance variables.