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dup-i.ri
U:RDoc::AnyMethod[iI"dup:ETI"Object#dup;TF: publico:RDoc::Markup::Document: @parts[o: RDoc::Markup::Paragraph; [I"GProduces a shallow copy of <i>obj</i>---the instance variables of ;TI"?<i>obj</i> are copied, but not the objects they reference.;To: RDoc::Markup::BlankLine o; ; [I"@This method may have class-specific behavior. If so, that ;TI"Hbehavior will be documented under the #+initialize_copy+ method of ;TI"the class.;T@S:RDoc::Markup::Heading: leveli: textI"on dup vs clone;T@o; ; [ I"AIn general, #clone and #dup may have different semantics in ;TI"Fdescendant classes. While #clone is used to duplicate an object, ;TI"Hincluding its internal state, #dup typically uses the class of the ;TI"2descendant object to create the new instance.;T@o; ; [I"RWhen using #dup, any modules that the object has been extended with will not ;TI"be copied.;T@o:RDoc::Markup::Verbatim; [I"class Klass ;TI" attr_accessor :str ;TI" end ;TI" ;TI"module Foo ;TI" def foo; 'foo'; end ;TI" end ;TI" ;TI",s1 = Klass.new #=> #<Klass:0x401b3a38> ;TI",s1.extend(Foo) #=> #<Klass:0x401b3a38> ;TI"s1.foo #=> "foo" ;TI" ;TI"+s2 = s1.clone #=> #<Klass:0x401be280> ;TI"s2.foo #=> "foo" ;TI" ;TI")s3 = s1.dup #=> #<Klass:0x401c1084> ;TI"Ms3.foo #=> NoMethodError: undefined method `foo' for #<Klass:0x401c1084>;T: @format0: @fileI" object.c;T:0@omit_headings_from_table_of_contents_below0I"obj.dup -> an_object ;T0[ I"();T@4FI" Object;TcRDoc::NormalClass00