JuliaGraphs / JuliaGraphs/SimpleWeightedGraphs.jl

No `reverse` implementation for SimpleWeightedDiGraph?

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Dominant language
Julia
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Description

I get a MethodError with

(@v1.11) pkg> st -m Graphs SimpleWeightedGraphs
Status `~/.julia/environments/v1.11/Manifest.toml`
  [86223c79] Graphs v1.12.0
  [47aef6b3] SimpleWeightedGraphs v1.4.0
julia> reverse(subgraph)
ERROR: MethodError: no method matching reverse(::SimpleWeightedDiGraph{Int64, Float64})
The function `reverse` exists, but no method is defined for this combination of argument types.

Closest candidates are:
  reverse(::DimensionalData.Dimensions.Lookups.ReverseOrdered)
   @ DimensionalData ~/.julia/dev/DimensionalData/src/Lookups/methods.jl:18
  reverse(::DimensionalData.Dimensions.Lookups.Unordered)
   @ DimensionalData ~/.julia/dev/DimensionalData/src/Lookups/methods.jl:20
  reverse(::DimensionalData.Dimensions.Lookups.ForwardOrdered)
   @ DimensionalData ~/.julia/dev/DimensionalData/src/Lookups/methods.jl:19
  ...

Stacktrace:
 [1] top-level scope
   @ REPL[159]:1

Is this a sufficiently simple implementation that anyone (aka me) can do it? Or are there some other considerations?

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First steps

  1. Read the whole issue, then the project's contributing guide.
  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 reproducing the MethodError with reverse(subgraph) in the Julia REPL using Graphs v1.12.0 and SimpleWeightedGraphs v1.4.0, then locate the existing SimpleWeightedDiGraph methods and the corresponding Graphs.jl reverse API. Done means the reported call has a defined reverse implementation and coverage demonstrates the behavior.

Written by the indexing model from the issue text.

Assessment

Tech stack
julia
Domain
data
Issue type
Feature
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
38/100

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