Basic understanding of IPv4 addresses
In a recent project I needed to anonymize IP addresses in tracking data. While masking a few bits from an IP address is not so interesting, it’s a good excus...
Recent Posts
A few updates
After having neglected my blog over the last few months, I want to start posting more frequently again (New Year’s resolutions and all that).
VPN: Temporarily solve same subnet conflicts
I recently had the problem of needing to establish a connection to a server behind a VPN that was in the same subnet as the network I was connecting from. Ev...
Running Flask on macOS with mod_wsgi/wsgi-express
Tutorial on setting up your Flask application to run on macOS with WSGI
SQL: Get the count of related records
Micro tutorial: SQL select the count of related records and sort by it.
Pandas: Select rows that match a string
Micro tutorial: select rows of a Pandas DataFrame that match a (partial) string.
LaTeX mathematics cheat sheet
LaTeX is the de facto standard typesetting system for scientific writing. Find a a cheat sheet with the most frequent used mathematics commands here.
Comparing two Excel columns with Pandas and Numpy
Having been asked multiple times if I can quickly compare two numeric columns from an excel file, I set up a small Jupyter notebook (and an R script) to show...
Display inline images in a Jupyter notebook with Matplotlib
Today I was working with the MNIST handwritten digits data and wanted to display a few images in a Jupyter notebook. After looking at PIL, then Pillow, I fou...
Debugging Jupyter notebooks
While searching for ways to debug code in a Jupyter notebook, I found a lot of outdated posts. So I decided to quickly write up my findings.