Misc #9128 ยป 0001-added-clarification-of-differences-between-Object-cl.patch
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* obj.clone -> an_object
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*
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* Produces a shallow copy of <i>obj</i>---the instance variables of
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* <i>obj</i> are copied, but not the objects they reference. Copies
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* <i>obj</i> are copied, but not the objects they reference. This
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* includes any modules that the object has been extended with. Copies
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* the frozen and tainted state of <i>obj</i>. See also the discussion
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* under <code>Object#dup</code>.
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*
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* class Klass
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* attr_accessor :str
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* end
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*
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* module Foo
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* def foo; 'foo'; end
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* end
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*
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* s1 = Klass.new #=> #<Klass:0x401b3a38>
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* s1.str = "Hello" #=> "Hello"
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* s1.extend(Foo) #=> #<Klass:0x401b3a38>
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* s2 = s1.clone #=> #<Klass:0x401b3998 @str="Hello">
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* s2.str[1,4] = "i" #=> "i"
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* s1.inspect #=> "#<Klass:0x401b3a38 @str=\"Hi\">"
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* s2.inspect #=> "#<Klass:0x401b3998 @str=\"Hi\">"
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* s2.foo #=> "foo"
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*
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* s3 = s1.dup #=> #<Klass:0x401b3798 @str="Hello">
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* s3.foo #=> NoMethodError: undefined method `foo' for #<Klass:0x401b3798>
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*
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* This method may have class-specific behavior. If so, that
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* behavior will be documented under the #+initialize_copy+ method of
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