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  1. sealed abstract class Week
  2.  
  3. case object Monday extends Week { def show()= "月曜日" }
  4. case object Tuesday extends Week { def show()= println( "火曜日" ) }
  5. case object Wednesday extends Week { def show()= println( "水曜日" ) }
  6. case object Thursday extends Week { def show()= println( "木曜日" ) }
  7. case object Friday extends Week { def show()= println( "金曜日" ) }
  8. case object Saturday extends Week { def show()= println( "土曜日" ) }
  9. case object Sunday extends Week { def show()= println( "日曜日" ) }
  10.  
  11. object Main extends App {
  12.   def dayOfTheWeek( week: Week ) = week match {
  13.     case Monday    => Monday.show()
  14.     case Tuesday   => Tuesday.show()
  15.     case Wednesday => Wednesday.show()
  16.     case Thursday  => Thursday.show()
  17.     case Friday    => Friday.show()
  18.     case Saturday  => Saturday.show()
  19.     case Sunday    => Sunday.show()
  20.   }
  21.  
  22.   dayOfTheWeek( Thursday )
  23.   dayOfTheWeek( Friday )
  24.   dayOfTheWeek( Sunday )
  25. }
Success #stdin #stdout 0.36s 4382720KB
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木曜日
金曜日
日曜日
https://ideone.com/VSXUo6
language:
Scala (scala 2.12.8)
created:
6 years ago
visibility:
public

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