Kotlin 無理やり束縛例

Binding.kt

// 計算結果を束縛
fun judgeBMI(weight: Double, height: Double): String {
    return when (
        val bmi = (height / 100)
            .let { weight / (it * it) }
        ) {
        in 0.0..18.5 -> "Low weight $bmi"
        in 18.5..25.0 -> "Normal (healthy weight)"
        in 25.0..30.0 -> "Obese Class I"
        in 30.0..35.0 -> "Obese Class II"
        in 35.0..40.0 -> "Obese Class III"
        else -> "Too match fat"
    }
}
// 関数を束縛
fun hello(name: String): String {
    return { "Mr.$name" }.let {
        "Hello, ${it()}"
    }
}