日記
適当にルート引いて自転車乗ったら激坂でしかも下ったあたりでパンクしたので萎えて帰った.
今日書いたコード
fun main() { val numbers = listOf(0, 3, 8, 4, 0, 5, 5, 8, 9, 2) println("list: ${numbers}") println("sorted: ${numbers.sorted()}") val setOfNumbers = numbers.toSet() println("set: ${setOfNumbers}") val set1 = setOf(1,2,3) val set2 = mutableSetOf(3,2,1) println("$set1 == $set2: ${set1 == set2}") println("contains 7: ${setOfNumbers.contains(7)}") }
list: [0, 3, 8, 4, 0, 5, 5, 8, 9, 2] sorted: [0, 0, 2, 3, 4, 5, 5, 8, 8, 9] set: [0, 3, 8, 4, 5, 9, 2] [1, 2, 3] == [3, 2, 1]: true contains 7: false
感想
setにもmutable/immutableの区別がある