C++ - Reddit

C++ profiles: a chance to fix some annoying defaults? Brainstorming and ideas. Hello everyone, Lately I have been thinking about the opportunity that profiles could give to C++ for "better defaults" and "cleanups". Which profiles would you like to see in an eventually profile-enforced version as "standard" or "enabled by default" that you think can be fit reasonably? I will start: - ununitialized variables: must use [indeterminate] - [nodiscard] by default? Would that be possible? Maybe this changes the meaning. - hardened std lib guarantee? - type safety/bounds safety (in user code) https://redd.it/1tja9zr @r_cpp

FluxUI — write your C++ UI once, run on Windows, Linux, and Android natively FluxUI — write your C++ UI once, run on Windows, Linux, and Android natively Most C++ UI frameworks drop the ball on Android. FluxUI doesn't — same C++20 codebase, all three platforms. The framework handles all platform-specific details under the hood so you never have to think about them. The API is Flutter-inspired (declarative widgets, reactive state), and there's a CLI to scaffold and run projects in two commands. Just tagged v0.1.0. It's early but the core is solid. GitHub: https://github.com/HeyItsBablu/flux Feedback welcome — especially from anyone who's tried cross-platform C++ UI and given up. https://redd.it/1tj6vin @r_cpp

reflection-first ORM using C++ 26 C++ 26 reflection got me excited about what future library APIs could look like, so I experimented with a small reflection-first ORM using annotations https://github.com/swordfatih/reflect https://redd.it/1tiw81e @r_cpp

(Maybe) All The Contract Papers https://a4z.noexcept.dev/blog/2026/05/20/The-Contract-Papers.html https://redd.it/1tisbs2 @r_cpp

Coroutines, part I: Co-operators and Promises https://www.youtube.com/watch?v=wmrW6AkRo3c https://redd.it/1tiu1ry @r_cpp

Should I continue learning C++? I’m not sure if this is the right subreddit, but I just needed to put this somewhere. My ex (M20) and I (F20) broke up about 2 weeks ago. Before our breakup, he was teaching me C++, his favourite language. I also code, but only in Python, so C++ felt pretty different to me and I was still at a very beginner stage. The thing is, I still want to keep learning it on my own, as I find it pretty interesting. But now, every time I try to write C++, I immediately think of him and end up feeling weirdly emotionally loaded for no particular reason. It feels a bit ridiculous because it’s literally just C++. At this point I'm not sure if I should keep going with C++ or just pick up another language. https://redd.it/1tir7yz @r_cpp

Conex – single-header C++20 library for condition-based binary pattern matching I built a small single-header library called Conex for binary pattern matching with lambda conditions. The idea: instead of hard-coded byte signatures, you express each match condition as a lambda that inspects the raw bytes. The pattern syntax is regex-style — (c0:4)(c1:8)\* means "4 bytes satisfying lambda 0, followed by zero or more 8-byte groups satisfying lambda 1". // Find a struct by its signature + page-aligned address fields auto result = conex::search_first(blob, "(c0:4)(c1:8)*", [](std::span<const uint8_t> s) { uint32_t sig; std::memcpy(&sig, s.data(), 4); return sig == 0xDEADBEEF; }, [](std::span<const uint8_t> s) { uint64_t addr; std::memcpy(&addr, s.data(), 8); return (addr & 0xFFF) == 0; // page-aligned } ); Useful for reverse engineering, game modding, firmware analysis, or anywhere you're scanning binary blobs for structures you can identify semantically but not by fixed offsets. Single header, no dependencies, C++20. [https://github.com/DanielCohen197/Conex](https://github.com/DanielCohen197/Conex) Happy to hear feedback! https://redd.it/1tiny5t @r_cpp

Qt Creator 20: faster clangd https://www.qt.io/blog/qt-creator-20-faster-clangd https://redd.it/1tilatn @r_cpp

IPC benchmark: ~3M msg/s and ~7 GB/s on macOS. Missing bare-metal Linux numbers I've been optimizing the IPC layer of areg-sdk, an open-source C++ framework I maintain. Here are the numbers and methodology. **What was measured**: Numbers are taken at `mtrouter` (the framework's message router), which sees both directions simultaneously and is more accurate point in the pipeline. * **macOS (Apple M3 Pro, LPDDR5):** \~2.5–3.0M msg/s at \~0.5 KB payload, \~6.5–7.0 GB/s at \~3 MB payload * **Windows 11 (Intel i7-13700H, DDR4):** \~1.0–1.2M msg/s at \~0.5 KB payload, \~2.4–2.6 GB/s at \~3 MB payload * **WSL2 (Intel i7-13700H, DDR4):** \~450–520K msg/s at \~0.5 KB payload, \~5.0–5.6 GB/s at \~3 MB (after network tuning) * **Linux VM on macOS:** results close to macOS native *What is included in these numbers:* TCP `localhost` loopback, 1:1 (provider -> mtrouter -> consumer). The stack includes: event creation, multithreading, event queuing, event dispatching, and socket communication. Service discovery, automatic framing, and thread dispatch are all active. *Note:* the benchmark example (`23_pubdatarate`) is optimized for throughput pressure. It pre-builds messages to maximize network load. *What is not included:* The consumer has a lower stable dispatch ceiling before its internal queue grows unbounded and memory climbs: *\~300–400K msg/s* on Windows, *\~500–600K msg/s* on macOS. Above those rates the dispatch thread becomes the bottleneck. I'm working on improving it. **Missing: bare-metal Linux** All Linux measurements so far come from VMs (WSL2 and a Linux VM on macOS). VM overhead varies too much to extrapolate confidently. Based on macOS results, bare-metal x86-64 Linux should be (estimated) \~*6.0–7.5 GB/s* for large payloads and \~*2.0–3.0M msg/s* for small payloads, *\~500K msg/s* stable dispatch. The benchmark is self-contained. If anyone runs it on bare-metal Linux, the results would be interesting to compare. README has exact commands to set: [https://github.com/aregtech/areg-sdk/tree/master/examples/23\_pubdatarate](https://github.com/aregtech/areg-sdk/tree/master/examples/23_pubdatarate) **Useful data points:** * distro/kernel * CPU model and class (mobile/desktop/server) * RAM type (DDR4/DDR5/LPDDR5) * measured msg/s and data rate per recipe * stable consumption before memory growth starts. Happy to answer questions about methodology or implementation. P.S. About areg-sdk: C++17 Service-oriented framework with ORPC for distributed development. Targets: Linux/Windows/macOS; RTOS is the next step. GitHub: [https://github.com/aregtech/areg-sdk](https://github.com/aregtech/areg-sdk) https://redd.it/1til14z @r_cpp

Introducing Sample Profile Guided Optimization in MSVC https://devblogs.microsoft.com/cppblog/introducing-sample-profile-guided-optimization-in-msvc https://redd.it/1tig36r @r_cpp

Hey, Anybody intrested in a Remote Robotics Simulation Engineer Job? $180/hr - $200/hr DM me for more # What You'll Do Design and implement high-fidelity robot models (URDF/MJCF) with accurate kinematics, dynamics, and contact properties Build and maintain simulation environments using MuJoCo, NVIDIA Isaac Sim, and/or Gazebo Develop end-to-end simulation pipelines for robot training, testing, and validation Tune physics parameters — friction, damping, inertia, actuator models — to maximize sim-to-real transfer Integrate simulations with ROS2 for perception, planning, and control workflows Write clean, performant code in Python and/or C++ to support simulation infrastructure Collaborate asynchronously with robotics researchers and engineers on model accuracy and environment design Profile and optimize simulation performance for large-scale or parallelized runs Document simulation configurations, model parameters, and pipeline architecture # Requirements Strong hands-on experience with at least one major robotics simulator: MuJoCo, NVIDIA Isaac Sim, or Gazebo Proficient in Python and/or C++ in a robotics or scientific computing context Solid understanding of rigid-body dynamics, contact mechanics, and control theory Experience creating and validating robot models (URDF, MJCF, or SDF formats) Familiarity with ROS2 and its integration with simulation environments https://redd.it/1tic2i0 @r_cpp

C++26: More function wrappers https://www.sandordargo.com/blog/2026/05/20/cpp26-copyable-function https://redd.it/1tic32u @r_cpp

Virtual dispatch isn't always the slowest, and std::variant isn't always the fastest https://shubhankar-gambhir.github.io/posts/four-ways-to-dispatch-a-runtime-selected-strategy-in-cpp/ https://redd.it/1thyi97 @r_cpp

citor: a header-only C++20 thread pool tuned for sub-µs dispatch https://github.com/Lallapallooza/citor https://redd.it/1thr04d @r_cpp

16th June 10:00 – 18:00 – [https://accuonsea.uk/2026/sessions/cpp-best-practices/](https://accuonsea.uk/2026/sessions/cpp-best-practices/) 2. **C++ Templates for Developers** – Walter E Brown – 2 day in-person workshop available on 15th & 16th June 10:00 – 18:00 – [https://accuonsea.uk/2026/sessions/cpp-templates-for-developers/](https://accuonsea.uk/2026/sessions/cpp-templates-for-developers/) 3. **Talking Tech (A Speaker Training Workshop)** – Sherry Sontag & Peter Muldoon – 2 day in-person workshop available on 15th & 16th June 10:00 – 18:00 – [https://accuonsea.uk/2026/sessions/talking-tech-a-speaker-training-workshop/](https://accuonsea.uk/2026/sessions/talking-tech-a-speaker-training-workshop/) **ACCU on Sea One Day Workshops** 1. **C++ Software Design** – Klaus Iglberger – 1 day in-person workshop available on 15th June 10:00 – 18:00 – [https://accuonsea.uk/2026/sessions/cpp-software-design/](https://accuonsea.uk/2026/sessions/cpp-software-design/) 2. **C++23 in Practice: A Complete Introduction** – Nicolai M. Josuttis – 1 day in-person workshop available on 16th June 10:00 – 18:00 – [https://accuonsea.uk/2026/sessions/cpp23-in-practice-a-complete-introduction/](https://accuonsea.uk/2026/sessions/cpp23-in-practice-a-complete-introduction/) 3. **Secure Coding in C and C++** – Robert C. Seacord – 1 day in-person workshop available on 16th June 10:00 – 18:00 – [https://accuonsea.uk/2026/sessions/secure-coding-in-c-and-cpp/](https://accuonsea.uk/2026/sessions/secure-coding-in-c-and-cpp/) All ACCU on Sea workshops take place in-person in Folkestone, England. **OTHER NEWS** * **(NEW) – CppCon 2026 Attendance Support Ticket Program Now Open!** – Includes free tickets for people who would not be able to attend otherwise. Find out more including how to apply at [https://cppcon.org/cppcon-2026-attendance-support-ticket-program/](https://cppcon.org/cppcon-2026-attendance-support-ticket-program/) * **C++ Under The Sea 2026 Announced** – C++ Under The Sea will once again take place on 15 & 16th October 2026 at Breepark in Breda, the Netherlands * **C++ Under The Sea 2026 Workshops Announced** – C++ Under The Sea have announced 3 workshops that will take place on the 14th October 2026. Find out more at [https://cppunderthesea.nl/#workshops](https://cppunderthesea.nl/#workshops) https://redd.it/1thqvct @r_cpp

Latest News From Upcoming C++ Conferences (2026-05-19) This is the latest news from upcoming C++ Conferences. You can review all of the news at [https://programmingarchive.com/upcoming-conference-news/](https://programmingarchive.com/upcoming-conference-news/) **TICKETS AVAILABLE TO PURCHASE** The following conferences currently have tickets available to purchase * **ADC Japan (1st – 3rd June) (Last Chance)** – You can buy tickets at [https://peatix.com/event/4840445](https://peatix.com/event/4840445) * **ACCU on Sea (15th – 20th June)** – You can buy standard tickets at [https://accuonsea.uk/tickets/](https://accuonsea.uk/tickets/) with discounts available for ACCU members. * **CppCon (12th – 18th September)** – You can buy early bird tickets until June 26th at [https://cppcon.org/registration/](https://cppcon.org/registration/) * **C++ Under The Sea** **(NEW – 14th – 16th October)** – You can buy early bird tickets at [https://sales.ticketing.cm.com/cppunderthesea2026/](https://sales.ticketing.cm.com/cppunderthesea2026/) * **Meeting C++ (26th – 28th November)** – You can buy early bird tickets at [https://meetingcpp.com/2026/](https://meetingcpp.com/2026/) **OPEN CALL FOR SPEAKERS** * **Meeting C++** **(NEW)** – Interested speakers have until June 4th to submit their talks for Meeting C++ which is scheduled to take place on 26th – 28th November. Find out more including how to submit your proposal at [https://meetingcpp.com/meetingcpp/news/items/Submit-your-talks-to-Meeting-Cpp-2026-.html](https://meetingcpp.com/meetingcpp/news/items/Submit-your-talks-to-Meeting-Cpp-2026-.html) **OTHER OPEN CALLS** * **CppCon Call For Authors Now Open!** – CppCon are looking for book authors who want to engage with potential reviewers and readers. Read the full announcement at [https://cppcon.org/call-for-author-2026/](https://cppcon.org/call-for-author-2026/)  **TRAINING COURSES AVAILABLE FOR PURCHASE** Conferences are offering the following training courses: **Last Chance To Register:** 1. **From Hello World to Real World – A Hands-On C++ Journey from Beginner to Advanced** – Amir Kirsh – 1 day online workshop available on *Thursday 21st May 08:30 – 16:30 UTC –* [https://cpponline.uk/workshop/from-hello-world-to-real-world/](https://cpponline.uk/workshop/from-hello-world-to-real-world/) 2. **AI++ 101 – Build an AI Coding Assistant in C++** – Jody Hagins – 1 day online workshop available on *Friday 22nd May 09:00 – 17:00 UTC* – [https://cpponline.uk/workshop/ai-101/](https://cpponline.uk/workshop/ai-101/) 3. **AI++ 201 – Build a Matching Engine with Claude Code** – Jody Hagins – 2 day online workshop available on *May 28th – May 29th 09:00 – 17:00 UTC* – [https://cpponline.uk/workshop/ai-201/](https://cpponline.uk/workshop/ai-201/) 4. **Splice & Dice – A Field Guide to C++26 Static Reflection** – Koen Samyn – Half Day online workshop available on *Monday 25th May 09:00 – 12:30 UTC* – [https://cpponline.uk/workshop/splice-and-dice/](https://cpponline.uk/workshop/splice-and-dice/) **NEW WORKSHOP** 1. **AI++ 101 – Build an AI Coding Assistant in C++** – Jody Hagins – 1 day online workshop available on *Friday 24th July 16:00 – 00:00 UTC* – [https://cpponline.uk/workshop/ai-101/](https://cpponline.uk/workshop/ai-101/) All of these workshops had previews at the main C++Online Conference which took place on the 11th – 13th March. You can watch these preview sessions here: [https://www.youtube.com/playlist?list=PLHG0uo5c6V3KIeoLqvBbIqy5AXt\_Me\_cm](https://www.youtube.com/playlist?list=PLHG0uo5c6V3KIeoLqvBbIqy5AXt_Me_cm) **Anyone who purchased a C++Online Main Conference ticket can also get a discount of however much they paid to attend the main conference.**  Also if anyone is from a lower-income background or live in a country where purchasing power is limited, then it is recommended to reach out to C++Online on [info@cpponline.uk](mailto:info@cpponline.uk) as they will be able to give you a discount. **ACCU on Sea Two Day Workshops** 1. **C++ Best Practices** – Jason Turner – 2 day in-person workshop available on 15th &

Kiln - A CMake-compatible build system that can do what CMake can't https://clehaxze.tw/gemlog/2026/05-17-releasing-kiln-a-cmake-compatiable-build-system-that-can-do-what-cmake-cant.gmi https://redd.it/1thqwvv @r_cpp

Boost 1.91.0 is now available in both Conan and vcpkg https://www.boost.org/releases/1.91.0/ https://redd.it/1thmvoo @r_cpp

Clang Lifetime Safty Doc Update https://clang.llvm.org/docs/LifetimeSafety.html https://redd.it/1thkhtd @r_cpp

Announcing iceoryx2 v0.9: Fast and Robust Inter-Process Communication (IPC) Library https://ekxide.io/blog/iceoryx2-0.9-release/ https://redd.it/1thjy1m @r_cpp