JuliaCollections / JuliaCollections/DataStructures.jl

Deprecation warning for `_unsetindex!` for Julia 1.14 nightly

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Julia
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Description

On the nightly Julia builds, I'm seeing:

┌ Warning: `_unsetindex!(A, i)` is deprecated, use `Base.unsetindex!(A, i)` instead.
│   caller = popfirst!(d::DataStructures.Deque{Tuple{Float64, Vector{Int64}}}) at deque.jl:326
└ @ DataStructures ~/.julia/packages/DataStructures/IwRP2/src/deque.jl:326

Looks like Base.unsetindex! will be introduced in 1.14, specifically with DataStructures support in mind (https://github.com/JuliaLang/julia/issues/58943).

AI thinks this guard would support both forms and quiet the warning:

@static if isdefined(Base, :unsetindex!)
    unsetindex!(A, i) = Base.unsetindex!(A, i)
else
    unsetindex!(A, i) = Base._unsetindex!(A, i)
end

See related discussion here: https://github.com/JuliaCollections/OrderedCollections.jl/issues/172.

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Research direction

Start at deque.jl:326, where popfirst! calls the deprecated _unsetindex! on DataStructures.Deque. Check the related OrderedCollections.jl discussion and Julia issue for compatibility expectations, then verify the warning is gone on Julia 1.14 nightly while older Julia versions remain supported.

Written by the indexing model from the issue text.

Assessment

Tech stack
julia
Domain
data
Issue type
Bug
Difficulty
2/5
Estimated time
1-3 hours
Activity status
Active
Clarity
Mostly clear
Newbie friendliness
78/100

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