We can even make arrays of structs that we define, which are automatically bundled together in memory.

我们甚至可以创建我们定义的结构数组，它们会自动捆绑在内存中。

Let's imagine we have three node structs saved in memory, at locations 1000, 1002 and 1008.

假设我们在内存中保存了三个节点结构，位置分别为 1000、1002 和 1008。

In Swift, we use both value and reference types, and while NSCoding supports classes, it doesn't work at all with structs or enums.

在 Swift 里，我们会用到值类型和引用类型虽然 NSCoding 支持 类（class）但它对结构（struct） 或者 枚举型（enum） 就无能为力了。

This array of structs, like any other array, gets created at a fixed size that can't be enlarged to add more items.

与任何其他数组一样，此结构数组以固定大小创建，无法扩大以添加更多项。