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  1. Object subclass: Animal [
  2.     | name |
  3.     Animal class >> new: name [^super new value: name; yourself]
  4.     value: n [name := n]
  5.     play [^name]
  6. ].
  7.  
  8. Animal subclass: Dog [
  9.     play [^'わんわん！', name, 'だよ']
  10. ].
  11.  
  12. Animal subclass: Cat [
  13.     | sleep |
  14.     Cat class >> new: name new: sleep [^super new value: name; valueFlag: sleep; yourself]
  15.     valueFlag: f [sleep := f]
  16.     play [
  17.           sleep = 1
  18.           ifTrue:  [^'にゃあ！', name, 'だよ', '...でも寝る']
  19.           ifFalse: [^'にゃあ！', name, 'だよ']
  20.     ]
  21. ].
  22.  
  23. pets := Array new: 2.
  24. pets at: 1 put: (Dog new: 'ぽち').
  25. pets at: 2 put: (Cat new: 'たま' new: 1).
  26. pets do: [:pet | pet play printNl].
  27.  
Success #stdin #stdout 0.01s 7940KB
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'わんわん！ぽちだよ'
'にゃあ！たまだよ...でも寝る'
https://ideone.com/HAA8Sh
language:
Smalltalk (gst 3.2.5)
created:
11 days ago
visibility:
public

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