Leadwerks Summer Games tournament begins
https://www.youtube.com/watch?v=s_3kj7F59eQ

https://redd.it/1ui0lbx
@r_cpp

Collider: A package manager for Meson - A hash proves the bytes, not the source
https://collider.ee/blog/2026-06-28-1500_a_hash_proves_the_bytes_not_the_source/

https://redd.it/1ui5ujb
@r_cpp

I'm building a Cargo-like build system for C++. Currently at v0.3.0 with automatic CMake migration. Looking for feedback.

Hey r/cpp!



I'm a 14-year-old, and I've spent my summer building \`deft\` — a build system for C++ that works like Cargo.



Current status:

* **Core Engine:** High-performance, zero-dependency C/C++ build system written in Rust.
* **Build Optimization:** Global build caching and strict toolchain pinning are fully functional.
* **Manifest Support:** Custom, dependency-free TOML parser handles basic profiles (`[profile.c]`, `[profile.cpp]`), language standards, optimization levels, macro definitions (`defines`), and the low-level `extra_flags` array.



I ported nlohmann/json and it worked flawlessly.



GitHub: [https://github.com/deft-cli/deft](https://github.com/deft-cli/deft)



I'm looking for feedback from C++ devs.

https://redd.it/1ui7jlf
@r_cpp

Rigx: toml based build system with native C/C++ support, hermetic build and tool chains leverage nix.
https://github.com/unofficialtools/rigx

https://redd.it/1ui8otp
@r_cpp

r/cpp removes human made posts as written by AI

See https://www.reddit.com/r/cpp/comments/1ui5ujb/comment/oufi4x3/?screen\_view\_count=5

How am I supposed to share what I work on?

It's never nice to have what you wrote called slop, I guess people here don't realize how hurtful it can be u/STL

https://redd.it/1uijvmt
@r_cpp

Command Routing Using Chain Of Responsibility Design Pattern
https://som-itsolutions.hashnode.dev/command-routing-using-chain-of-responsibility-design-pattern

https://redd.it/1uio33d
@r_cpp

Optimizing LLVM's bump allocator
https://maskray.me/blog/2026-06-28-optimizing-llvm-bump-allocator

https://redd.it/1uir81p
@r_cpp

New C++ Conference Videos Released This Month - June 2026 (Updated to Include Videos Released 2026-06-22 - 2026-06-28)

C++Online

2026-06-22 - 2026-06-28

Keynote: I Fixed Move Semantics - Jason Turner - [https://youtu.be/TJhMGS9sRlw](https://youtu.be/TJhMGS9sRlw)
Singletons Are Not Evil - You’re Just Using Them Wrong - Mostafa Mahmoud Ali - https://youtu.be/Bn5RFaXATuU

2026-06-15 - 2026-06-21

The Art of API Design - Christoph Stiller - [https://youtu.be/d5djrT4qfHc](https://youtu.be/d5djrT4qfHc)
Top-Performance Genetic Programming - Can Only C++ Get You There? - Eduardo Madrid - https://youtu.be/oBQDe56Yi3Q

2026-06-08 - 2026-06-14

Monads Meet Mutexes - Arne Berger - [https://youtu.be/AisGDOoF82U](https://youtu.be/AisGDOoF82U)
Lock-free Queues in the Multiverse of Madness - Dave Rowland - https://youtu.be/eHmjkFdQl00

2026-06-01 - 2026-06-07

Writing C++ Code is Challenging, Writing Performant C++ Code is Daunting - Dmitrii Radivonchik - [https://youtu.be/R2sm9mailuU](https://youtu.be/R2sm9mailuU)
Case Study - Purging Undefined Behavior and Intel Assumptions in a Legacy Codebase - Roth Michaels - https://youtu.be/H-dHTeSR\_n8

ADC

2026-06-22 - 2026-06-28

Demystifying std::memory\_order - Timur Doumler - [https://youtu.be/yc2HC2w5pzI](https://youtu.be/yc2HC2w5pzI)
Building Smartphone Instruments from Commodity Hardware - HID Controllers, Embedded Audio, and Modular Design - Calvin McCormack - https://youtu.be/uqKkP0zFBGg
Why Do People Actually Buy Music Software, Anyway? - James Russell - [https://youtu.be/25sYPk2ZxIY](https://youtu.be/25sYPk2ZxIY)
Contrapunk - From Palestrina's Rules to Real-Time MIDI Harmony - Vibhav Bobade - https://youtu.be/GreYwDBFWb4

2026-06-15 - 2026-06-21

Scripting Architecture for a DAW-like Plugin - How we Implemented Lua and JavaScript Scripting for Synthesizer V Studio - Kanru Hua - [https://youtu.be/CKOvmBRdHAA](https://youtu.be/CKOvmBRdHAA)
Patterns of Practice: Live Coding and the Logic of South Asian Traditional Music - Abhinay Khoparzi - https://youtu.be/n0-XpUhZ7Dc
ADC 2015 to 2035 - Looking Back at 10 Years of Audio Dev, and Peering Forward at the Next 10 - Julian Storer - [https://youtu.be/WvVur2\_aGHU](https://youtu.be/WvVur2_aGHU)
From DAW to Game Engine - Unfiltered Creativity - Nikhil Dahake - https://youtu.be/5PtMWJLFjyo

2026-06-08 - 2026-06-14

Low Latency Android Audio with improved CPU Performance - Phil Burk - [https://youtu.be/DtBrKEu0R0g](https://youtu.be/DtBrKEu0R0g)
Linux as the Conductor - Driving Pre-Compiled Audio DSP Kernels on C7x for Real-Time Processing - Vishnu Pratap Singh - https://youtu.be/Auq9WnHNtPo
Overview of Granular Synthesis - Avrosh Kumar - [https://youtu.be/QpBV24nWg2M](https://youtu.be/QpBV24nWg2M)
The Agentic Symphony - Multi-Agent Collaboration for Emergent Musical Composition - Meera Sundar - https://youtu.be/QMUXoImgTIA

2026-06-01 - 2026-06-07

Beyond the DAW - Designing a Procedural Sequencer Powered by Music-Theory - Romy Dugue & Cecill Etheredge - [https://youtu.be/48sH4wQUDAs](https://youtu.be/48sH4wQUDAs)
From DAW Users to Audio Developers - Teaching JUCE to Creative Minds - Milap Rane - https://youtu.be/200UrugEanY
Music Design and Systems - Achieving Inaudibly Complex Systems in Video Games - Liam Peacock - [https://youtu.be/R6raBvCNsQo](https://youtu.be/R6raBvCNsQo)
Developing for Avid’s Audio Ecosystem - Rob Majors - https://youtu.be/91-7YWVKRE4

CppCon

2026-06-22 - 2026-06-28

C++ The Documentary: Live Panel Discussion with Bjarne Stroustrup, Herb Sutter & More - [https://youtu.be/zMYZ5MFQAho](https://youtu.be/zMYZ5MFQAho)

2026-06-01 - 2026-06-07

Lightning Talk: Navigating Code Reviews

as a Code Author - Ben Deane - https://youtu.be/zygtgvHp\_MM
Lightning Talk: Eight Consteval Queens and Compile-Time Printing - Sagnik Bhattacharya - [https://youtu.be/gNPhJrXLiIs](https://youtu.be/gNPhJrXLiIs)
Instrumenting the Stack: Strategies for End-to-end Sanitizer Adoption - Damien Buhl - https://youtu.be/TSrymTXw5w8

https://redd.it/1uivdly
@r_cpp

Comparing an Integer Division Optimisation in Clang, MSVC, and GCC
https://nukethebees.com/int-division-modulo-optimisation-differences-clang-gcc-msvc/

https://redd.it/1uj2ndw
@r_cpp

reserve() and capacity() for flat containers

I just finished the new chapter in "C++23 - The Complete Guide" about flat containers and would like to share and discuss my advice about how to use reserve() and capacity() for flat containers (thanks to Jonathan Wakely who was pointing parts of this out).
It might be a surprise that these member functions do not exist as usually vectors are used inside flat containers and reserve() is a key performance feature of them.

However, here is how you can reserve more memory:

For flat\_set and flat\_multiset:

​

auto vec = std::move(fset).extract(); // temporarily extract the underlying vector
data.reserve(vec.capacity() 5); // raise capacity by a factor of 5
fset.replace(std::move(vec)); // move the vector back into the flat set

For flat\_map and flat\_multimap:

​

auto newCapa = fmap.keys().capacity() 5; // raise capacity by a factor of 5
auto data = std::move(fmap).extract(); // extract underlying vectors
data.keys.reserve(newCapa); // raise capacity of vector for keys
data.values.reserve(newCapa); // raise capacity of vector for values
fmap.replace(std::move(data.keys), // move the vectors back
std::move(data.values))

Note also that there is another pretty hacky way, but only for flat maps and multimaps (here mapping strings to double's):

​

auto newCapa = fmap.keys().capacity() 5;
constcast<std::vector<std::string>&>(fmap.keys()).reserve(newCapa);
constcast<std::vector<double>&>(fmap.values()).reserve(newCapa);

Yes, ugly, but works... ;-)

I am still working on adding reserve() and capacity() to the standard flat containers (see wg21.link/p3779)



https://redd.it/1uj3tau
@r_cpp

Compiler disagreements for deducing this
https://godbolt.org/z/rTTWzedPj

https://redd.it/1uj8n4l
@r_cpp

FIX implementation

I want to implement low latency high throughput FIX server and client, where should I start? Any guides?

https://redd.it/1uj93w1
@r_cpp

Stackful fibers with 3.6ns context switch. Silk fibers.
https://clickhouse.com/blog/silk

https://redd.it/1ujdcfk
@r_cpp

sussurro.cpp: I reimplemented the OPUS-MT / Marian translation architecture (encoder–decoder seq2seq) in C++ on ggml
https://github.com/whispem/sussurro.cpp

https://redd.it/1ujjjuj
@r_cpp

Bloomberg Terminal costs $24,000/year. I built a free open-source clone in C++ that runs in your terminal.
https://github.com/Sqwerzyyy/Quaanz/tree/main/bloomberg-terminal

https://redd.it/1ujong1
@r_cpp

Upcoming C++ User Group meetings in July 2026
https://meetingcpp.com/meetingcpp/news/items/Upcoming-Cpp-User-Group-meetings-in-July-2026.html

https://redd.it/1ujp7bw
@r_cpp

Introducing the Boost Documentary! Teaser & CppCon Preview

"If I were to tell a story about Boost, I'd start with the people."

Today we're sharing the official teaser for the Boost documentary. A film about the people, the politics, and decades of work behind possibly the most important open source library most people have never heard of.

Teaser link – [https://youtu.be/87jvuDbnwqQ](https://youtu.be/87jvuDbnwqQ)

The documentary looks at:

* Boost as a kind of "app store for C++, 30 years early"
* What decades of open source dedication looks like up close
* The honest, sometimes uncomfortable dynamics of how proposals and people move through the C++ committee

There will be a preview screening at CppCon 2026 for all attendees. So if you're going to be in Aurora, CO September 16, 2026, please join us!





https://redd.it/1ujqpdy
@r_cpp

Fastest theoretical Wordle solver written in pure C++ by hand
https://github.com/saieshshirodkar/wordle-solver

https://redd.it/1ujs8dx
@r_cpp

Latest News From Upcoming C++ Conferences (2026-06-30)

This is the latest news from upcoming C++ Conferences. You can review all of the news at https://programmingarchive.com/upcoming-conference-news/

TICKETS AVAILABLE TO PURCHASE

The following conferences currently have tickets available to purchase

CppCon (12th – 18th September) – You can buy standard tickets until August 29th at [https://cppcon.org/registration/](https://cppcon.org/registration/)
C++ Under The Sea (14th – 16th October) – You can buy early bird tickets at https://sales.ticketing.cm.com/cppunderthesea2026/
(NEW) ADC – (9th – 11th November) – Tickets for ADC can now be purchased at [https://ti.to/audio-developer-conference/adc-bristol-2026](https://ti.to/audio-developer-conference/adc-bristol-2026)
Meeting C++ (26th – 28th November) – You can buy early bird tickets at https://meetingcpp.com/2026/

OPEN CALL FOR SPEAKERS

OTHER OPEN CALLS

(NEW) CppCon Call For Volunteers Now Open – Interested volunteers have until August 1st to apply at the CppCon main conference which is scheduled to take place from 14th – 18th September. For more information including how to apply visit [https://cppcon.org/cfv2026/](https://cppcon.org/cfv2026/)
(Last Chance) CppCon Call For Posters Now Open – Interested poster presenters have until July 15th to submit their applications for the CppCon main conference which is scheduled to take place from 14th – 18th September. For more information including how to apply visit https://cppcon.org/cppcon-2026-call-for-poster-submissions/
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:

C++Online

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/0900-1700 PDT – [https://cpponline.uk/workshop/ai-101/](https://cpponline.uk/workshop/ai-101/)
Watch the preview session here https://youtu.be/suP5zA7QqW4

CppCon Online Workshops

9th – 11th September

1. Modern C++: When Efficiency Matters – Andreas Fertig – 3 day online workshop available on 9th – 11th September 09.00 – 15.00 MDT – https://cppcon.org/class-2026-when-efficiency-matters/
2. System Architecture And Design Using Modern C++ – Charley Bay – 3 day online workshop available on 9th – 11th September 09.00 – 15.00 MDT – https://cppcon.org/class-2026-system-architecture-and-design-using-modern-cpp/

21st – 23rd September

1. C++ Fundamentals You Wish You Had Known Earlier – Mateusz Pusz – 3 day online workshop available on 21st– 23rd September 09.00 – 15.00 MDT – https://cppcon.org/class-2026-cpp-fundamentals/
2. C++23 in Practice: A Complete Introduction – Nicolai Josuttis – 3 day online workshop available on 21st– 23rd September 09.00 – 15.00 MDT – https://cppcon.org/class-2026-cpp23-in-practice/
3. Programming with C++20 – Andreas Fertig – 3 day online workshop available on 21st– 23rd September 09.00 – 15.00 MDT – https://cppcon.org/class-2026-programming-with-cpp20/

26th – 27th September

1. Using C++ for Low-Latency Systems – Patrice Roy – 2 day online workshop available on 26th– 27th September 09.00 – 17.00 MDT –