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Aug 25th, 2019
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  1. fun main(args: Array<String>) {
  2. val a : MutableMap<Int, String> = mutableMapOf(1 to "ねこ")
  3. a.put(2 , "いぬ") //追加
  4. println("${a[1]} ${a[2]}") //そのまま表示
  5.  
  6. a.remove(1) //ここで「ねこ」を削除
  7.  
  8. val a1 = a[1] //キーに新しい変数を付ける
  9. val a2 = a[2] //同様
  10. println(a1 +" " + a2) //変数での表示方法
  11. }
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