[beginner] using .rev() with a range

[Yandros]

How do I reverse a range?

I wanted to construct a more general range which can also count downward. I tried the following let range = if start < end { (start..end) } else { (end..start).rev() }; println!("{:?}", range); which doesn't work because the types aren't right. According to this question I have essentially two options: Erase the type. Collect into a vector Erasing the type: Something with Box::new but the given the example doesn't actually use .rev(): let items = if sta…