「Kotlin」StringBuilderのappend()メソッドでint，string，char文字列を結合するサンプル

2021年1月6日

書式
fun append(value: Char): StringBuilder
fun append(value: String): StringBuilder
fun append(value: Int): StringBuilder
使用例

fun main() {
   val strA = "study "
   val strB = "skill in arkgame "
   val strC ="．com"


    val cft = StringBuilder()
    cft.append(strA)
    cft.append(strB)
    cft.append(strC)
    println("result1: "+cft.toString()) 

    val strD = 110
    cft.append(strD)
    println("result2: "+cft.toString())

    val strE = true
    cft.append(strE)
    println("result3: "+cft.toString())

    val strF = 'k'
    cft.append(strF)
    println("result4: "+cft.toString())
}

実行結果
>kotlinc arkgame.kt -include-runtime -d arkgame.jar
>kotlin arkgame.jar
result1: study skill in arkgame ．com
result2: study skill in arkgame ．com110
result3: study skill in arkgame ．com110true
result4: study skill in arkgame ．com110truek