After a two years pause due to COVID, ESUG conference is back. This year’s edition took place 22-26 August in Нови Сад (Novi Sad), Србија (Serbia). As usual, it was a delight to meet the Smalltalk community. It was also an opportunity to present latest updates on PharoJS, give demos and even implement new stuff […]
Tag: Pharo
Client-Server Application Development with PharoJS
PharoJS is a free open source infrastructure that allow developing and testing in Pharo applications that ultimately run on a Javascript interpreter. It is a general purpose solution that can target a wide range of applications, running in a web browser, on top of NodeJs or packaged in cross-platform mobile apps using some framework such […]
Mac OS X Bug and Workaround to Open a “file:” URL with Parameters from Command-Line
Testing the PLC3000 project requires opening HTML files by a web browser. Indeed, PLC3000 is developed using PharoJS. Its code is written in Pharo, before getting transpiled to JavaScript and exported to a JS files referenced by HTML files. Developing PLC3000 in a TDD fashion, I quickly faced an issue. I realized that it is […]
PharoJS ESUG 2019 Update
I gave a short presentation at the ESUG 2019 Smalltalk conference that was held this year in Cologne, Germany. In this talk, I made a summary of main PharoJS changes and improvements done during the last 12 months. This includes a more robust test framework to run and test Javascript code generated from Pharo code. […]
Polygon-Based 2D SLAM for Robotic Exploration
Johann Dichtl successfully defended his PhD, that I’ve co-supervised with Luc Fabresse and Guillaume Lozenguez. The defense took place this tuesday July 2nd, 2019 morning. The jury members were: Prof. Ouiddad Labbani from Université de Limoges, Dr. Mikal Ziane, HdR, from Université Paris Descartes, and Dr. Laetitia Matignon from Université Claude Bernard, Lyon 1. Title […]
Observer Pattern Made Easy with Pharo Lightweight Observer
Lightweight Observer is an alternative to Announcement, the default Pharo implementation of the Observer Design Pattern. I started developing Lightweight Observer because I needed a small framework, with an implementation that can be easily converted to Javascript using PharoJS. I also wanted to be straight forward to use. I had in mind beginners such as […]
Farmers Market App: Find Fresh Locally Grown Food
If you care both about the planet and your health, the Farmers Market app is for you! This app allows you to find nearby markets, where you can buy fresh food directly from farmers. Most of the produce are grown locally. This means less fuel for transportation. So, by buying locally grown food you contribute […]
How to Make a Large Lighthouse Using a Cheap 3D Printer
As a Pharo addict, making a 3D printed lighthouse is a fun week-end project. This idea is even more attractive. It’s a project that goes beyond what can be done using a small 3D printer, with a single extruder. The requirement are the following: The lighthouse can be taller than the maximum printing height. The […]
Nao Humanoid Robot Can Write Arbitrary Text
Some of my students worked on this project. They used Pharo, ROS, as well as Choregraphe to make Nao write arbitrary text. Since the robot motion is not very precise, they made up a simple but smart solution to allow the robot can push the page after writing each letter. Source code is available on […]
Hello World in Pharo
The best first post for a software developer is a ‘Hello World’ program. For this, I’m using my favorite programming language: Pharo. Transcript cr; show: ‘Hello World!’