# 4.4.4-8 Tuple 类型

Tuple 类型用来表示一个已排序的变量对象，其定义如下：

```go
type Tuple struct {
	vars []*Var
}
```

Tuple 通常用来表示函数的参数列表、返回值列表等，该类型仅仅用于编译器内部，不是语言层面的类型。


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