Mobile OS alternatives and european sovereignty
Sailfish (not OS) (photo credit: wikipedia)
OS for mobile devices has evolved over the pasts years.
Once, European actors (e.g. Nokia) were in lead position.
Now it's hard to find non-android mobile OS.
Each OS mobile comes with its software and hardware environements, and its
geopolitical considerations.
Here is a report on the
Strategy Behind Sovereign Mobile Operating Systems Adoption.
Cache implementation using weakref
Bird's cache (Photo credit: Wikipedia)
This article presents a quick example of how to use
weakref to implement a
home-made cache mechanism.
Let's use the following use case:
- Let's consider items:
- items can be stored on a storage
- items can be retrieved from storage
- items are identify by an ID …
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Tkinter and Asyncio
Asynchronous process results waiting (Photo credit: Wikipedia)
Graphical interfaces are typically the kind of object that can take advantage
of asynchrounous programming as a GUI spend lot of time waiting for user input.
Tkinter <https://docs.python.org/3/library/tkinter.html#module-tkinter>_
is a kind of standard for graphical …
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Latex generator using Jinja
Kawasukune-jinja (Photo creadit: Wikipedia)
The goal is to generate a PDF file using python.
I decided to generate \(\LaTeX\).
Pipeline
I decided to use jinja as its documentation
mention it.
\begin{equation*}
\boxed{\text{Jinja template}} \xrightarrow[\text{python}]{}
\boxed{\LaTeX} \xrightarrow[\text{pdflatex}]{}
\boxed{\text{PDF}}
\end{equation*}
The …
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HTTP to HTTPS
Public key (Photo credit: Michael Drummond)
The goal was to migrate from HTTP to HTTPS
HTTPS overview
The HTTPS protocol rely on TLS
(previously SSL) to ensure data integrity (data cannot be modified unnoticed),
confidentiality (requested URL and content are only known by end points) and
authentication (end points are …
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Wikipedia crawling (part II)
Crawling (Photo credit: Wikipedia)
This article is the follow up of the one about
wikidata crawling.
Wikipedia has specific
infobox templates.
This is the normalized way to enter specification inside wikipedia articles.
It provides templates with already defined fields.
For example the
planet template
has fields such as periapsis or …
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Travis setup
One job in continuous integration pipeline (Photo credit: Wikipedia)
The goal is to setup a CI pipeline based on Travis
with external dependencies integrated to a Github repository
Travis basics
To enable Travis integration in Github, one must edit ./.travis.yml file.
I won't go into detail. The setup is …
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Wikidata crawling
Graph database representation (Photo credit: Wikipedia)
I wish to have reliable data about vehicles. I decided to rely
on one large source, namely Wikipedia. I chose it because it is reviewable and
most of the time reviewed, and regularly updated and completed.
Wikipedia - Wikidata relationship
Wikidata items are made to …
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Differential equation in python
Second order differential equation (Photo credit: Wikipedia)
In python, differential equations can be numerically solved thanks to scipy .
Is usage is not as intuitive as I expected.
Simple equation
Let's start small.
The first equation will be really simple:
\begin{equation*}
\frac{\partial{f}}{\partial{t}} = a \times f …
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Zombie propagation
Zombie favorite food warning (Photo credit: wikipedia)
I recently read a paper trying to model a disease propagation.
I wanted to play with this model.
The model
The model is know as "SIR" as it divide the population into 3 groups:
- S: suceptible to become a zombie
- I: infected …
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