Closed interval maybe a mistake?

[skiars]

Closed interval maybe a mistake?

[s-hadinger]

I'm afraid it would be a huge breaking change.

What about the math version: [0..5] for [0,1,2,3,4,5] and [0..5[ for [0,1,2,3,4] (if the syntax is possible)

The other option would be to use the Python equivalent [0:5]

[skiars]

Indeed, and I find some interesting uses of range:

> [1, 2, 3, 4][0 .. -1]
[1, 2, 3, 4]
> [1, 2, 3, 4][0 .. 0] # not an empty range
[1]
> [1, 2, 3, 4][0 .. -4]
[1]
> [1, 2, 3, 4][0 .. -5]
[]

[nobodywasishere]

You could also use Ruby syntax by adding another dot, but i can see how that would be confusing.

> [0..5]
[0,1,2,3,4,5]
> [0...5]
[0,1,2,3,4]

Another idea is having ..= and ..< to be more explicit, but it may look too ugly/verbose

> [0..=5]
[0,1,2,3,4,5]
> [0..<5]
[0,1,2,3,4]

[skiars]

The other option would be to use the Python equivalent [0:5]

I agree with this.