関数
val v = calc(10, 20)
fun calc(a: Int, b: Int): Int {
return a + b
}
ラムダ式
val v = calc(10, 20)
val calc = { a: Int, b: Int -> a + b }
ラムダ式 型指定
val calc:(a: Int, b: Int) -> Int = { a: Int, b: Int -> a + b }
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