kotlin mutableSetの最初の値を取得するサンプル
環境
Windows10 Home 64bit
Java 19.0.1
Kotlin 1.7.20-release-201
書式
mutableSet名.first( )
first関数を使ってmutableSetの最初の値を取得します。
使用例
fun main() {
val tt = mutableSetOf( "study", "skill", "become", "smart", "arkgame" )
println( tt )
println( tt.first() )
}
fun main() {
val tt = mutableSetOf( "study", "skill", "become", "smart", "arkgame" )
println( tt )
println( tt.first() )
}
fun main() {
val tt = mutableSetOf( "study", "skill", "become", "smart", "arkgame" )
println( tt )
println( tt.first() )
}
実行結果
[study, skill, become, smart, arkgame]
study