Posts about technology and arts.

Experimenting with Vuejs and Cytoscape

The project I work on at work had a GUI interface with Python and PyGTK, which is now being ported to the web. We have adopted Vuejs as the JS framework, and have been building the components required for our UI over the past months. The project is hosted on GitHub licensed under GPLv3.

In Cylc 7, an important visualization was the workflow graph. The screen shot below is from the design sketches done by another contributor from the UK, showing how it should look in Cylc 8.

The first library we decided to try is Cytoscape, a well-known graph library, with use cases in research, corporate, and other fields. One limitation of Cytoscape is that the way it renders the graph nodes is limited.

Limited, meaning that you won’t be able to easily add HTML, images, SVG, animation, etc. Though not impossible.

Dynamic breadcrumbs with Vue Router nested routes and Vuetify Breadcrumb component

Vue Router supports nested routes, which allow developers to create a hierarchical navigation structure. This is handy if you want to create breadcrumbs based on this hierarchy dynamically.

Reddit r/functionalprogramming community

Alonzo Church caricature

r/functionalprogramming was created nearly seven years ago. It started when I was interested in contributing to Apache Commons Functor.

I created it to have a place to collect links about functional programming. To my surprise there was no subreddit for functional programming. So I created one. Fast forward a few years, the community is still active, with a healthy group of nearly 10.000 readers and contributors.

Nowadays I spend something like 5 to 20 minutes everyday moderating posts. And a little more than that whenever I find some interesting post to read. But if I could change one thing in the community, it would be to find more moderators.

It is a huge responsibility to be the sole moderator of content read by thousands of readers. Whilst I try to stay neutral, and keep it a healthy community, I feel like having other people with different background and opinions would be good for the future of the community.

Cylc videos

Last week I put together a playlist with all Cylc videos I could found on Youtube.

Clicking on the video above should open the YouTube playlist, with the next videos on the right. They are sorted from the newest to the oldest (upload date).

Generating diagrams from a SQlite database with Python

A 1984 Apple Macintosh drawing

There are tools out there that can be used to reverse engineer databases and generate diagrams. These tools normally are GUI based. But I needed one that could be used in a project build to generate a simple diagram for documentation.

A tool in Python would be ideal, as that is the language the project I was working on was written in. After searching in DuckDuckGo and PYPI, I found ERAlchemy that seemed to have the features I needed - kinda.