What should happen if length of collection is less than n?

[nhz2]

I am getting an error when using chunk if the length of the collection is less than n. I'm not sure if this is intended or a bug.

julia> using ChunkSplitters

julia> chunks(1:0; n=4)[3]
0:-1

julia> chunks(1:2; n=4)[3]
ERROR: ArgumentError: ichunk must be less or equal to the length of the ChunksIterator
Stacktrace:
 [1] getchunkindices(c::ChunkSplitters.Internals.ViewChunks{…}, ichunk::Int64)
   @ ChunkSplitters.Internals ~/.julia/packages/ChunkSplitters/p2yrz/src/internals.jl:158
 [2] getindex(c::ChunkSplitters.Internals.ViewChunks{…}, i::Int64)
   @ ChunkSplitters.Internals ~/.julia/packages/ChunkSplitters/p2yrz/src/internals.jl:102
 [3] top-level scope
   @ REPL[21]:1
Some type information was truncated. Use `show(err)` to see complete types.

I would expect chunks(1:2; n=4)[3] to also be an empty range to be consistent with chunks(1:0; n=4)[3].

[lmiq]

The error is expected, what I think is not expected is not throwing an error for chunks(1:0; n=4)[3], since the iterator is empty. I'll check if we did that on purpose for some reason.

[lmiq]

In the PR linked above the behavior becomes consistent in the sense that it will throw a bounds error for empty iterators, when direct indexing is intended. This won´t affect the collect for empty iterators, returning an empty collection of chunks, which was an intentional feature.