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@nalimilan - do you know why DataFrames.jl tests on nightly keep failing? I though that |
nalimilan
reviewed
Oct 14, 2023
Co-authored-by: Milan Bouchet-Valat <[email protected]>
nalimilan
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Oct 15, 2023
src/abstractdataframe/iteration.jl
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| else | ||
| picked = Set(names(df, cols)) | ||
| apply = Bool[name in picked for name in names(df)] | ||
| @assert length(apply) == ncol(df) |
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Any reason why this could be false?
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No - it is just that later we use zip which does not check this invariant.
If you prefer I can remove it.
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Well it seems to me that the comprehension that creates apply already guarantees that invariant (unless names is broken but then we have more serious problems...).
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OK - I removed the @assert
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Oct 17, 2023
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Thank you! |
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add
colskwarg tomapcolsandmapcols!similarly like we recently did for column renaming.This is a useful addition for cases when e.g. one wants to transform only columns meeting some condition and keep the column order unchanged.