[rust] The maximum of inclusive/exclusive range
[rust] The maximum of inclusive/exclusive range

```
Some(1)
Some(2)
```

sgkim126/snippets,sgkim126/snippets,sgkim126/snippets,sgkim126/snippets,sgkim126/snippets,sgkim126/snippets,sgkim126/snippets,sgkim126/snippets,sgkim126/snippets,sgkim126/snippets,sgkim126/snippets,sgkim126/snippets