BeCPP Meeting May 2026

The next meeting of the Belgian C++ Users Group is planned for Wednesday May 13th, 2026 at 18:00.

I’m happy to announce that the next meeting of the Belgian C++ Users Group is planned for Wednesday May 13th, 2026 at 18:00 at Nokia.

Nokia ( https://www.nokia.com/ ) is sponsoring this event by providing the location, drinks and catering.

The agenda is as follows:

• 18:00: Reception with food.
• 18:30: Session 1: Designing Data for Performance and Maintainability (Laurent Carlier)
  Modern software performance often depends less on algorithms and more on how data is organized in memory. This talk explores why optimizing data layout is critical for achieving high performance, particularly in systems programming and data-intensive applications.
  We begin by examining the importance of cache-friendly data structures. While they can have significantly boost performance, they also introduces practical challenges.
  The talk then presents a structured solution to address these drawbacks, restoring usability while preserving performance benefits.
  Finally, we explore how modern reflection techniques can be leveraged to eliminate code repetition, enabling cleaner, safer, and more maintainable code without sacrificing efficiency.
  Attendees will gain practical insights into balancing performance and code quality, along with techniques that can be applied to real-world systems.
• 19:30: Break
• 19:45: Session 2: The fastest Java Virtual Machine is the C++26 compiler (Koen Samyn)
  Static compile time reflection is a capability that for a long time seemed like an impossibility for C++. Over the years however, the compiler itself gained the capability of executing C++ code while compiling, which opened the door to adding this meta capability to the language.
  The contents of the talk follows a logical progression: the basics of reflection, writing a simple serializer. The talk concludes with an example of std::meta::substitute (a hidden gem in the P2996 proposal) which is used to transform a java bytecode program into an executable C++ program.
• 20:45: Introduction to Nokia, followed by a drink.

We will be giving away two copies of Professional C++, 6th Edition.

The event is free for everyone, but registration is required.

There are 80 seats available for this event.

Note: The deadline for registrations is May 10th, 2026!