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  1. sealed abstract class Week
  2.  
  3. case object Sunday extends Week { def show(){ println( "日曜日" ) } }
  4. case object Monday extends Week
  5. case object Tuesday extends Week
  6. case object Wednesday extends Week
  7. case object Thursday extends Week { def show(){ println( "木曜日" ) } }
  8. case object Friday extends Week
  9. case object Saturday extends Week { def show(){ println( "土曜日" ) } }
  10.  
  11. object Main extends App {
  12.   def weekToKanji( week: Week ) = week match {
  13.     case Sunday => "日曜日"
  14.     case Monday => "月曜日"
  15.     case Tuesday => "火曜日"
  16.     case Wednesday => "水曜日"
  17.     case Thursday => Thursday.show()
  18.     case Friday => "金曜日"
  19.     case Saturday => Saturday.show()
  20.   }
  21.  
  22.   weekToKanji( Thursday )
  23.   weekToKanji( Saturday )
  24. }
Success #stdin #stdout 0.35s 4382720KB
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木曜日
土曜日
https://ideone.com/6ff63n
language:
Scala (scala 2.12.8)
created:
6 years ago
visibility:
public

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