On by Arnau Siches.

Issue 2020-W40

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This week has been about testing data pipelines, compression algorithms, notebooks, QR codes and tabular data.

Vimium for MacOS

An application to move around MacOS with the keyboard a-la Vim.

QArt Codes

An article on how QR codes work and how to exploit its tolerance to errors to embed images in them.

Great Expectations

A tool to harness testing for data pipelines.

The Hitchhiker’s Guide to Compression

A guide on compression algorithms. The interactive section, once complete, will be an excellent place to get an intuition on how each algorithm work.


A tool to save Jupyter notebooks as extended Markdown or marked Python, R, Julia scripts.

Deepnote might interest you if you are after a collaborative notebook experience.


A tool to copy tabular data between databases, CSV files and cloud storage.

Licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.


Arnau Siches © 2021