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  | foo = :untouched | |
| bar = :untouched | |
| [:touched].each do |foo| | |
| bar = :touched | |
| end | |
| foo #=> :untouched | |
| bar #=> :touched | 
  
    
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  | class Foo | |
| def foo arg = false | |
| {arg: arg, block: block_given?} | |
| end | |
| end | |
| class Bar < Foo | |
| def foo *args | |
| super | |
| end |