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  1. Symbol extend [ value: arg [ ^ arg perform: self ] ] "Squeak や Pharo では不要"
  2.  
  3. #(1 2 3) do: #display
Success #stdin #stdout 0.01s 7804KB
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123
https://ideone.com/kKPkdF
language:
Smalltalk (gst 3.2.5)
created:
139 days ago
visibility:
secret

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