如何加入两个数组是scala

Question

假设我有两个数组

val x =Array("one","two","three")
val y =Array("1","2","3")

获得新数组的最优雅方法是什么 ["one1","two2","three3"]

Answer 1

使用 zip 和 map 应该可以做到：

(x zip y) map { case (a, b) => a + b }

Answer 2

与@m-z 类似，带有 for 理解，像这样，

for ( (a,b) <- x zip y ) yield a + b

这可以封装成一个隐含的如

implicit class StrArrayOps(val x: Array[String]) extends AnyVal { 
  def join(y: Array[String]) = 
    for ( (a,b) <- x zip y ) yield a + b 
}

并像这样使用它，

x join y
Array(one1, two2, three3)

Answer 3

替代zip：

(0 until math.min(x.length, y.length))
          .map(i => x(i) + y(i))
          .toArray

how to join two array is scala