@nalimilan has just tagged the DataFrames.jl package release v0.15.0. It contains many major changes, in particular a significant improvement of split-apply-combine family of functions - both in terms of speed and usability. You can read the full list of enchancements with examples here Julia snip…

I make type mistakes very often using ==. I wish there were a safer equality operator that would error unless the types of the operands were compatible.

[image] bkamins: subset(df, :x => ==(0)) Then now with the 1.1.0 version is also possible to use subset(df, :x => ==(0)) or only subset(df, :x => ByRow(==(0))) ?

Only subset(df, :x => ByRow(==(0))) The following subset(df, :x => ==(0)) is a somewhat meaningless comparison and can lead to hard to catch bugs, which is why it’s disallowed.

Or you can write filter(:x => ==(0), df). This is the crucial difference between filter (which works on a element) and subset which takes a whole vector. We have discussed removing filter support, as its syntax is inconsistent with the rest of the DataFrames.jl minilanguage (as normally :x => fun m…

Agreed. I started adding typeassert to be sure typeassert(id, eltype(df.id)) only_id = filter(:id => ==(id), df) but this isn’t a DataFrames problem, I think. The equality is from Julia base.

Is there any “cheat sheet” newer or more complete than this one? https://www.ahsmart.com/pub/data-wrangling-with-data-frames-jl-cheat-sheet/ It uses dataframes.jl v0.22.

@Juan - it should be mostly OK. You could open an issue on https://github.com/tk3369/www.ahsmart.com to ask for update. Thank you!

I am trying to update to DataFrames 1.1.0 using Pkg.update(“DataFrames”) and checking the package with Pkg.status(“DataFrames”) its not getting updated - I am still seeing v0.22.7 Can you please help

Do ] @add DataFrames@1.1.0 and read the error message closely. It will tell you what package is holding back compatability in your environment.

[image] pdeffebach: @add DataFrames@1.1.0 Updating registry at C:\Users\harne\.julia\registries\General Updating registry at C:\Users\harne\.julia\registries\JuliaComputingRegistry Resolving package versions… ERROR: Unsatisfiable requirements detected for package ScikitLearn [3646fa90]: S…

Release announcements for DataFrames.jl

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Topic		Replies	Views
DataFrames.jl development survey Data question , dataframes	52	3357	September 27, 2020
Frustrated using DataFrames New to Julia dataframes , data_structures	97	11545	April 22, 2022
[ANN-RFC] DFMacros.jl Package Announcements dataframes	30	2198	June 19, 2021
DataFramesMeta.jl and the state of the DataFrames ecosystem Data	36	4284	April 24, 2020
The state of DataFrames.jl H2O benchmark Package Announcements dataframes	53	9800	January 1, 2025

Release announcements for DataFrames.jl

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