如何将数组转换为元组? [英] How to convert an Array to a Tuple?

问题描述

我有一个来自 Java JPA 的 Array[Any]，其中包含(在本例中为两个，但考虑任何少量)不同类型的事物.我想将这些表示为元组.

I have an Array[Any] from Java JPA containing (two in this case, but consider any a small number of) differently-typed things. I would like to represent these as tuples instead.

我有一些快速而肮脏的转换代码，想知道如何改进它并使其更通用.

I have some quick and dirty conversion code, and wondered how it could be improved and perhaps made more generic.

val pair = query.getSingleOrNone // returns Option[Any] (actually a Java array)
pair collect { case array: Array[Any] =>
  (array(0).asInstanceOf[MyClass1], array(1).asInstanceOf[MyClass2]) }

推荐答案

这个怎么样?

val pair = query.getSingleOrNone
pair collect { case Array(x: MyClass1, y: MyClass2, _*) => (x,y) }
// result would be Option[(MyClass1, MyClass2)]

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