Blog by Bogumił Kamiński

Posts

May 12, 2022
My first Twitch live streaming session
May 6, 2022
An exercise in DataFrames.jl transformation minilanguage
Apr 29, 2022
Values' mutability in Julia
Apr 22, 2022
Testing Julia
Apr 15, 2022
Some special cases of method dispatch in Julia
Apr 8, 2022
Set vs vector lookup in Julia: a closer look
Apr 1, 2022
Astonishing performance of lookup in vectors in Julia
Mar 25, 2022
Back to the basics: array literals in Julia
Mar 18, 2022
Julia for Data Analysis book preview
Mar 11, 2022
Nesting and unnesting columns in DataFrames.jl
Mar 4, 2022
Confused by Julia
Feb 25, 2022
Any and all reduction of rows in DataFrames.jl
Feb 18, 2022
Upcoming DataFrames.jl features
Feb 11, 2022
Safety-efficiency trade-offs in the map function
Feb 4, 2022
Using DelimitedFiles module with DataFrames.jl
Jan 28, 2022
The curious case of subset condition
Jan 21, 2022
Categorical vs pooled arrays
Jan 14, 2022
Pitfalls of macro invocation in Julia
Jan 7, 2022
New features in DataFrames.jl 1.3: conclusion
Dec 31, 2021
New features in DataFrames.jl 1.3: part 4
Dec 24, 2021
New features in DataFrames.jl 1.3: part 3
Dec 17, 2021
New features in DataFrames.jl 1.3: part 2
Dec 10, 2021
New features in DataFrames.jl 1.3: part 1
Dec 3, 2021
Choosing how to store your strings
Nov 26, 2021
Clip your data with ClipData.jl
Nov 19, 2021
Welcome to DataFramesMeta.jl
Nov 12, 2021
One thousand and one stories
Nov 5, 2021
Why, how, and when of ∘
Oct 29, 2021
Top 10 in the Julia language
Oct 22, 2021
Cross validation: a second take
Oct 15, 2021
DataFrames.jl training: implementing cross validation
Oct 8, 2021
Julia beginner's corner: mastering comparison operators
Oct 1, 2021
On Alan Edelman's knife-edge condition in computational social science
Sep 24, 2021
Hands-on Data Science with Julia
Sep 17, 2021
Updating views in DataFrames.jl
Sep 10, 2021
Fixed width strings in CSV.jl
Sep 3, 2021
ABC of handling missing values in Julia
Aug 27, 2021
Handling vectors of vectors in DataFrames.jl
Aug 20, 2021
DataFrames.jl user's corner: filtering performance
Aug 13, 2021
The state of multiple threading in DataFrames.jl
Aug 6, 2021
Summer break puzzle
Jul 30, 2021
How to make your joins faster in DataFrames.jl?
Jul 23, 2021
Basic DataFrames.jl: getting the data
Jul 16, 2021
DataFrames.jl at JuliaCon2021
Jul 9, 2021
Transforming multiple columns with multiple functions in DataFrames.jl
Jul 2, 2021
What is new in DataFrames.jl 1.2.0?
Jun 25, 2021
Benchmarking push! in DataFrames.jl
Jun 18, 2021
How to get head or tail of a data frame in DataFrames.jl?
Jun 11, 2021
How much do collections of allocated objects cost?
Jun 5, 2021
DataFrames.jl joins: matchmissing=:notequal
May 28, 2021
Advanced reshaping in DataFrames.jl
May 20, 2021
A new tutorial on DataFrames.jl
May 14, 2021
The hardest part of DataFrames.jl development process
May 7, 2021
DataFrames.jl: why do we have both subset and filter functions?
Apr 30, 2021
The order of join and grouping result in DataFrames.jl
Apr 24, 2021
Some comments on DataFrames 1.0 release
Apr 16, 2021
Working with matrices in DataFrames.jl 1.0
Apr 9, 2021
A tutorial on igraph for Julia
Apr 2, 2021
Poor man's guide to despecialization
Mar 26, 2021
Construction vs conversion in Julia
Mar 20, 2021
Expand your DataFrames.jl toolbox: the flatten function
Mar 12, 2021
Sorting data by a transformation of columns in DataFrames.jl
Mar 5, 2021
What is new in PooledArrays.jl?
Feb 27, 2021
How to check the version of a package?
Feb 19, 2021
How do loops in Julia handle local variables?
Feb 12, 2021
Reducing compilation cost in DataFrames.jl
Feb 6, 2021
Column selectors in DataFrames.jl
Jan 30, 2021
On the bang row selector in DataFrames.jl
Jan 22, 2021
Mass transformations of data frames how-to
Jan 15, 2021
Playing with Chain.jl
Jan 8, 2021
Why DataFrame is not type stable and when it matters
Dec 31, 2020
Dissecting RANDU
Dec 24, 2020
DataFrames.jl minilanguage explained
Dec 18, 2020
Is case_when needed in DataFrames.jl?
Dec 11, 2020
Binning your data with Julia
Dec 5, 2020
DataFrames 0.22 @ JuliaAcademy
Nov 27, 2020
ABC of A/B Testing
Nov 20, 2020
The need for rand speed
Nov 14, 2020
A classical sorting exercise
Nov 6, 2020
Swift as an Arrow.jl
Oct 30, 2020
Train your brain with the Julia language
Oct 23, 2020
The power of lookup functions in Julia
Oct 16, 2020
Should I use mutable or immutable containers for agent based models in Julia?
Oct 10, 2020
PyData Global 2020 DataFrames.jl Tutorial
Oct 2, 2020
Julia Base is DataFrames.jl best friend
Sep 25, 2020
DataFrames.jl vs Pandas, dplyr, and Stata
Sep 20, 2020
Row aggregation in DataFrames.jl
Sep 13, 2020
Pseudo broadcasting in DataFrames.jl
Sep 4, 2020
Separating a column into multiple columns in DataFrames.jl
Aug 29, 2020
Subsetting strings in Julia using character indexing
Aug 22, 2020
A basic SIR model using agent-based approach in Julia
Aug 13, 2020
The String, or There and Back Again
Aug 7, 2020
JuliaCon2020: Julia is production ready!
Aug 2, 2020
JuliaCon2020: conclusions for DataFrames.jl
Jul 25, 2020
DataFrames.jl @ JuliaCon2020
Jul 17, 2020
How is => used in DataFrames.jl?
Jul 11, 2020
First steps with agent based modeling in the Julia language
Jul 3, 2020
Comparing dplyr vs DataFrames.jl
Jun 28, 2020
How to embed project environment setup in your Julia script
Jun 22, 2020
Writing an AR(1) process simulator as a module in Julia
Jun 14, 2020
Solving Sicherman dice puzzle using DataFrames.jl
Jun 7, 2020
Learning who is the author of the current state of the Julia language
May 30, 2020
Tutorials for DataFrames.jl release 0.21. Part II
May 25, 2020
Tutorials for DataFrames.jl release 0.21. Part I
May 18, 2020
My practices for managing project dependencies in Julia
May 11, 2020
Understanding package version restrictions in Julia
May 10, 2020
Activating project environment in Julia REPL automatically