ボイラーコードに、さよなら！ｗ

CurryingOnKotlin.kts

// Currying on Kotlin
val s = "    "
(2..22).forEach { c ->
    val r = 1..c
    val indent = s::repeat
    val generic = r.joinToString(", ") { "E$it" }
    val retLambda = r.joinToString(" -> ") { "(E$it)" } + " -> R"
    val argument = r.joinToString(", ") { "e$it" }
    val head = r.joinToString("\n") { indent(it+1) + indent(1).dropLast(1) + "{ e$it ->" }
        .drop(s.length * 3 - 1)
    val body = indent(c+3) + "this@curry($argument)"
    val tail = (c downTo 1).joinToString("\n") { indent(it + 2) + "}" }
    println(
        """fun <$generic, R> (($generic) -> R).curry(): $retLambda {
|    return $head
|$body
|$tail
|}""".trimMargin()
    )
    println()
}