open source

Mar 30, 2025 mutation testing rust open source

Mutation Testing in Rust

I’ve been a big fan of Mutation Testing since I discovered PIT. As I dive deeper into Rust, I wanted to check the state of mutation testing in Rust. Starting with cargo-mutants I found two crates for mutation testing in Rust: cargo-mutantsand mutagen mutagen hasn’t been maintained for three years, while cargo-mutants is still under active development. I’ve ported the sample code from my previous Java code to Rust: struct LowPassPredicate { threshold: i32, } impl

Jul 12, 2020 license open source apache mit bsd

On Open Source, licenses and changes

The subject of Open Source and OS licenses has been waxing and waning over time. Recently, it became hot again. In this post, I’d like to do a quick recap to set the stage. Then, I’ll analyze reasons for license changes. The rise of Open Source Before I actually started my career - even I was before even born - software was provided with its source code. The value was in the hardware. Most customers - if not every one of them - modified and adapted the source code to their hardwar

Mar 25, 2018 open source

Open Source has won

When I started working as a developer - a long time ago, we were under constant supervision. For example, one had to ask the architects team for every new library. I remember one of the "official" library was iText, probably because reimplementing its features was deemed to expensive. Yet, though Struts was available, we had our own MVC framework. Just like any other company at this time. Since that time, a lot has changed. The Apache Web Server has become ubiquitous, even though some

Jan 18, 2015 open source spring vaadin

Improving the Vaadin 4 Spring project with a simpler MVP

I’ve been using the Vaadin 4 Spring library on my current project, and this has been a very pleasant experience. However, in the middle of the project, a colleague of mine decided to improve the testability. The intention was laudable, though the project already tried to implement the Model View Presenter pattern. Instead of correcting the mistakes here and there, he refactored the whole codebase using the provided MVP module… IMHO, this has been a huge mistake. In this article

Oct 24, 2009 filter jsf open source opensymphony sitemesh template tiles

Simple templating solution with SiteMesh

In this article, I will show you how to use SiteMesh in your JEE web sites in order to bring a sense of unity to them.

Aug 12, 2009 bea business hibernate ibm it jboss mysql open source opensource oracle shark springsource sun vmware

Shark! Shark! in the IT business

Do you remember the classic Atari ST game where you, as a fish, eat other fishes while getting bigger and avoiding bigger fishes to eat you? It seems the last 4 years has seen its share of fishes eat and being eaten.

Jan 10, 2009 open source opensource quality sonar

Manage the quality of your projects with Sonar

Sonar is a free OpenSource product that provides you with a general dashboard displaying information about the codebase of each configured project, such as: Number of failed tests,% of code coverage,% of rules compliance (more later),% of duplicated lines,and much more. Then you get an additional graphical information showing: a square for the size of your project’s codebase relative to the entire codebase’s size,a color (from red to green) for the % of rules compliance. Yet, w