如何在Swift中将数组追加到另一个数组中？

var sourceArray = [1, 2, 3]
var destinationArray = [4, 5, 6]

destinationArray += sourceArray

var sourceArray = [1, 2, 3]
var destinationArray = [4, 5, 6]

destinationArray += sourceArray

print(destinationArray) // 输出结果：[4, 5, 6, 1, 2, 3]