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| class Foo | |
| def handle(obj) | |
| yield obj | |
| end | |
| end | |
| class Bar < Foo | |
| def handle(obj) | |
| super { | a | yield a.downcase } | |
| end | |
| end | |
| Foo.new.handle('HELLO'){ | a | puts a; } # HELLO | |
| Bar.new.handle('HELLO'){ | b | puts b; } # expects hello |
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