one thing that I think may be source of bug about ...

# stdlib

[elect]

one thing that I think may be source of bug about ranges is that 0 until x is [0, x), but x downTo 0 is [x, 0]

[dmitry.petrov]

0.rangeTo(x) (aka 0..x) is [0, x].
Equivalent function with exclusive end would probably be called downUntil (if introduced).
Note the difference: to = inclusive end, until = exclusive end.

[elect]

yeah, it makes sense, I forgot the name of the .. operator