JuliaArrays / JuliaArrays/AxisArrays.jl

Inference failures on 0.7

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Dominant language
Julia
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Description

Indexing: Error During Test
  Test threw an exception of type ErrorException
  Expression: @inferred(D[1, 1, 1, :]) == @inferred(D[1, 1, 1, 1:1]) == @inferred(D[1, 1, 1, [1]]) == AxisArray([10], Axis{:dim_4}(Base.OneTo(1)))
  return type AxisArrays.AxisArray{Int64,1,Array{Int64,1},Tuple{AxisArrays.Axis{:dim_4,Base.OneTo{Int64}}}} does not match inferred return type AxisArrays.AxisArray{Int64,1,Array{Int64,1},_} where _

There are others but this one is the simplest (found by running AxisArrays master tests on JuliaLang master).

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First steps

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by running the AxisArrays master tests on JuliaLang master and reproduce the reported @inferred expression for D[1, 1, 1, :], D[1, 1, 1, 1:1], and D[1, 1, 1, [1]]. The issue names no source file or test path; done means resolving the reported inference failure and the other 0.7 inference failures.

Written by the indexing model from the issue text.

Assessment

Tech stack
julia
Domain
data
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
30/100

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