备忘

```js
fx() -> y //把fx()函数的值存入y
y = fx() //值存入y
//定义返回值类型
func fx() -> string
{

}
```

The issue body contains a code snippet in an unspecified syntax, possibly related to function definitions and return types in the Simple-language project. Since the repository is a simple programming language written in Java, the work likely involves updating documentation or examples. However, the intent is not stated. A newcomer would need to understand the project's grammar and documentation structure first.

索引モデルが issue の本文から書いたものです。