queryverse / queryverse/Query.jl
Make string functions work on columns typed as Any
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bug
- Dominant language
- Julia
- Stars
- 403
- Forks
- 48
- Avg merge
- 3d 6h
- Merged PRs (30d)
- 6
Description
Could this be made to work:
DataFrame(A=Any["SomeStringA"]) |> @mutate(B=rstrip(_.A, 'A'))
Currently it fails with:
ERROR: MethodError: no method matching rstrip(::DataValues.DataValue{Any}, ::Char)
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by running the reported DataFrame and @mutate reproduction with an Any-typed column, then trace how rstrip receives DataValues.DataValue{Any}. Done means the expression works for the shown input without the MethodError, with a regression test covering the behavior.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- julia
- Domain
- data
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100