scala - 如何将元组映射映射到 Scala 中的映射元组？

Question

拥有

val a: Map[String, (Int, Int)] = Map("a" -> (1, 10), "b" -> (2, 20))

什么是正确的 Scala 派生方式

val b: (Map[String, Int], Map[String, Int]) = (Map("a" -> 1, "b" -> 2), Map("a" -> 10, "b" -> 20))

来自 a ?

Answer 1

scala> val b = (a.mapValues(_._1), a.mapValues(_._2))
b: (scala.collection.immutable.Map[String,Int], scala.collection.immutable.Map[String,Int]) = (Map(a -> 1, b -> 2),Map(a -> 10, b -> 20))