2026 Annual C++ Developer Survey "Lite"

By Blog Staff | Apr 21, 2026 05:58 PM | Tags: None

The annual global C++ developer survey is now open:

2026 Annual C++ Developer Survey "Lite"

Please share your feedback in this annual 10-minute survey to help inform C++ standardization and C++ tool vendors. This is the biggest opportunity we all have each year to make our voices heard and help improve our industry and community!

A summary of the results, including aggregated highlights of common answers in the write-in responses, will be posted publicly here on isocpp.org and shared with the C++ standardization committee participants and C++ tool vendors to help inform C++ evolution and tooling.

The survey closes in one week.

Thank you for participating and helping to inform our committee and community.

CppCon 2025 How C++ Finally Beats Rust at JSON Serialization -- Lemire & Thiesen

By Blog Staff | Apr 17, 2026 12:33 PM | Tags: None

Registration is now open for CppCon 2026! The conference starts on September 12 and will be held in person in Aurora, CO. To whet your appetite for this year’s conference, we’re posting videos of some of the top-rated talks from last year's conference. Here’s another CppCon talk video we hope you will enjoy – and why not register today for CppCon 2026!

How C++ Finally Beats Rust at JSON Serialization

by Daniel Lemire & Francisco Geiman Thiesen

Summary of the talk:

JSON, or JavaScript Object Notation, has become a cornerstone for storing and exchanging data. Its appeal lies in its simplicity—human-readable text that elegantly captures structured data through attribute-value pairs and arrays: {"age": 5, "name": "Daniel", "toys": ["wooden dog", "little car"]}. JSON is intuitive yet powerful. But ingesting and producing JSON can turn into a performance choke point. In C++, it can be a tedious, error-prone task. Programmers wrestle with unexpected content, manually mapping data to and from native structures, all while striving for speed and safety.

With languages like Java, C#, Zig, Rust, or Python, JSON serialization and deserialization typically requires far less work. In particular, Rust's serde library blends convenience with high speed. We wish for a C++ library to automatically handle JSON production and consumption, seamlessly tied to native data structures. It is not merely to simplify life for developers; it is also about crafting code that is both fast and solid, generated at compile time by a battle-tested library.

Thankfully, C++ might soon be getting reflective metaprogramming (  PR2996  ). Leveraging the  experimental Bloomberg LLVM fork  with reflective metaprogramming, we have built a full-fledged implementation—complete with tests, benchmarks, and documentation. Our goal is to have production-ready code the moment mainstream compilers catch up. The results speak for themselves: we are parsing JSON directly into C++ structures at gigabytes per second, outpacing even mature heavyweights like Rust's serde. Better yet, the conversion between C++ data structures and JSON is fully automated, thanks to metaprogramming. It has the potential to be a leap forward for C++ in the data-driven age. Unfortunately, there are still problems and limitations: we present them and provide some solutions.

2025-12 Mailing Available

By Administrator | Dec 16, 2025 10:46 AM | Tags: None

The 2025-12 mailing of new standards papers is now available.

2025-09 Mailing Available

By Administrator | Sep 11, 2025 11:08 AM | Tags: None

The 2025-09 mailing of new standards papers is now available.

2025-08 Mailing Available

By Administrator | Aug 15, 2025 05:33 PM | Tags: None

The 2025-08 mailing of new standards papers is now available.

2025-07 Mailing Available

By Administrator | Jul 15, 2025 05:32 PM | Tags: None

The 2025-07 mailing of new standards papers is now available.

Reflection voted into C++26: "Whole new language" -- Herb Sutter

By Blog Staff | Jun 21, 2025 10:15 PM | Tags: None

The first trip report from the Sofia meeting is available:

Trip report: June 2025 ISO C++ standards meeting (Sofia, Bulgaria)

by Herb Sutter

From the article:

A unique milestone: “Whole new language”

Today marks a turning point in C++: A few minutes ago, the C++ committee voted the first seven (7) papers for compile-time reflection into draft C++26 to several sustained rounds of applause in the room. I think Hana “Ms. Constexpr” Dusíková summarized the impact of this feature best a few days ago, in her calm deadpan way… when she was told that the reflection paper was going to make it to the Saturday adoption poll, she gave a little shrug and just quietly said: “Whole new language.”

Mic drop.

Results summary: 2025 Annual C++ Developer Survey "Lite"

By Blog Staff | May 19, 2025 01:00 AM | Tags: None

Thank you to everyone who reponded to our 2025 annual global C++ developer survey. As promised, here is a summary of the results, including one-page AI-generated summaries of your answers to the free-form questions:

CppDevSurvey-2025-summary.pdf

A 100-page version of this report that also includes all individual write-in responses has now been forwarded to the C++ standards committee and C++ product vendors, to help inform C++ evolution and tooling.

Your feedback is valuable, and appreciated.

2025-05 Mailing Available

By Administrator | May 15, 2025 05:32 PM | Tags: None

The 2025-05 mailing of new standards papers is now available.

Survey closing soon: 2025 Annual C++ Developer Survey "Lite"

By Blog Staff | May 7, 2025 02:58 AM | Tags: None

If you haven't already, please take 10 minutes to participate in this year's annual C++ developer survey! The results help to inform C++ standardization and C++ product vendors.

2025 Annual C++ Developer Survey "Lite"

The survey closes on Friday.

Thank you for participating and helping to inform our committee and community!