Name: 0x3A: Orthodox C++ - a ship with convention, and Efficiency Without Illusions
Start: 2025-11-27T17:30:00+01:00
End: 2025-11-27T21:00:00+01:00
Location: Prevas AB

Welcome to our 58th Meetup, the final one for 2025!
We’re closing the year with a great program and a special guest from outside Stockholm.
A big thank you to [Prevas AB](https://www.prevas.se/) for hosting the evening!

**The program:**
\- Intro\, news\, and quiz

* **Harald**: Orthodox C++, The Vasa has shipped, but who broke the contract
* **Casual mingling** and networking with refreshments 🍕🥤🤝
* **Filipe**: Efficiency Without Illusions: LLM-Assisted C++ Design & Refactoring (Gains, Limits, and Safety Rails)

**Door open 17:30, the program starts at 18:00**

The program in detail:

**Harald Achit: Orthodox C++, The Vasa has shipped, but who broke the contract**
Observations and reflections about the latest stories and 🎭 in the C++ world

**Filipe Mulonde: Efficiency Without Illusions: LLM-Assisted C++ Design & Refactoring (Gains, Limits, and Safety Rails)**
LLMs can speed up C++ design and refactoring—but only when you work with their constraints. This talk maps the real efficiency curve: where models accelerate work (API reshaping, mechanical edits, migration playbooks, doc/test scaffolding) and where they slow you down (non-local invariants, concurrency/memory model, UB traps, ABI stability, perf-critical paths). We’ll dig into hard limits—context windows, long-range dependencies across large repos, latency and rate limits, token costs, reproducibility—and show practical mitigations.

**Väl mött!** 🎉

Harald

Patrik Åkerlind

StockholmCpp

SwedenCpp

Kindly provides free CLion licenses for some of our event visitors.

JetBrains

Hands Development AB

Member, speaker, first major SwedenCpp-Pro supporter

Arvid Norberg

Net Insight

Prevas

Atlas Copco

Nexer Group

Berotec

think-cell

Sylog

Excillum

Oracle

OHB Sweden

Technology

C & C++

Software Engineering

Software Development

**Harald** has filled several roles in his career, which started in the mid-90s.
Today, he is interested in every aspect of development, especially software quality, team organization, and development infrastructure.
Despite exploring many modern languages, he still has a deep passion for C++.




**Filipe** is a GPU modeling engineer at ARM Holdings, where he works on the world's most sold mobile GPUs. ARM is a global leader, producing technology that powers countless devices worldwide. Filipe holds a bachelor's degree in Software Engineering and a master's degree in Artificial Intelligence from the Polytechnic University of St. Petersburg in Russia. Filipe has also gained valuable experience as a scientific researcher at ETH Zurich in Switzerland, a prestigious institution renowned for its cutting-edge research and innovation in science and technology. At ETH Zurich, he focused on computer architecture and bioinformatics. Additionally, he has worked as a software engineer on the development of an autonomous train for JSCo RZD, one of the most significant railway companies globally. As an international speaker, Filipe has presented at major C++ conferences such as CppCon, Meeting C++, and Embo++, among others, sharing his expertise and insights with the global developer community.  

Harald Achitz, Filipe Mulonde 

0x3A: Orthodox C++ - a ship with convention, and Efficiency Without Illusions

Prevas AB

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0x3A: Orthodox C++ - a ship with convention, and Efficiency Without Illusions

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