Created
October 29, 2009 19:25
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Modules can access instance variables of the included-to class
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| >> module Foo | |
| >> def bar | |
| >> puts @quux | |
| >> end | |
| >> end | |
| => nil | |
| >> class Baz | |
| >> attr_accessor :quux | |
| >> def xyzzy | |
| >> @quux ||= 1 | |
| >> @quux *= 2 | |
| >> end | |
| >> end | |
| => nil | |
| >> Baz.send(:include,Foo) | |
| => Baz | |
| >> y2 = Baz.new | |
| => #<Baz:0x565af4> | |
| >> y2.xyzzy | |
| => 2 | |
| >> y2.bar | |
| 2 | |
| => nil | |
| >> y2.quux = 99 | |
| => 99 | |
| >> y2.xyzzy | |
| => 198 | |
| >> y2.bar | |
| 198 | |
| => nil |
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