more verbose `show` method for ranges?

[ericphanson]

I think ranges could show with the number of elements, at least for 3-arg show (or compact is false, I never totally know when each is appropriate). I'm imagining something like:

julia> 5:1
5:4 (empty range)

julia> 5:-0.1:1
5.0:-0.1:1.0 (41 elements)

I think this would mitigate the confusion of empty ranges with various endpoints (like #59011) and just be generally a bit helpful when you have more complicated ranges.

[mcabbott]

Your first example was implemented by #57697, will be in 1.13?

And some ranges do print more detail:

julia> 5:1
5:4 (empty range)

julia> LinRange(5:-0.1:1)
41-element LinRange{Float64, Int64}:
 5.0, 4.9, 4.8, 4.7, 4.6, 4.5, 4.4, 4.3, 4.2, 4.1, …, 1.8, 1.7, 1.6, 1.5, 1.4, 1.3, 1.2, 1.1, 1.0

julia> VERSION
v"1.13.0-DEV.639"

IMO printing a bit more for wouldn't hurt. 41-element StepRangeLen{Float64 isn't too much, although the full type (as in summary) is quite a mouthful.

[ericphanson]

Your first example was implemented by #57697, will be in 1.13?

Hah, I must have seen that and then forgotten about it. Glad it is implemented.

I guess I’ll leave this open for the number of elements case.