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September 22, 2015 06:16
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| class Foo | |
| @@cvar = 100 | |
| class << self | |
| def cvar | |
| @@cvar | |
| end | |
| attr_accessor :ivar | |
| end | |
| end | |
| class Bar < Foo | |
| @@cvar = 200 | |
| end | |
| Foo.cvar # 200 | |
| Bar.cvar # 200 | |
| Foo.ivar = 300 | |
| Bar.ivar = 400 | |
| Foo.ivar # 300 | |
| Bar.ivar # 400 | |
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