C++ Standard Evolution Viewer -- Jason Turner

By Blog Staff | Dec 19, 2025 06:58 AM | Tags: None

Explore how the C++ standard evolved across versions with interactive side-by-side diffs

C++ Standard Evolution Viewer

by Jason Turner

From the article:

This site provides an interactive way to explore changes in the C++ standard by viewing side-by-side diffs of individual sections (identified by stable names like [array], [class.copy], [ranges.adaptors]).

Each version transition below focuses on Tier 1 sections (major library components and language features) to provide the most educational value.

PVS-Studio 7.40: support for Visual Studio 2026, Qt Creator 18, UE5 Horde

By Andrey Karpov | Dec 19, 2025 05:14 AM | Tags: ue5 sast qt creator 18 qt pvs-studio misra horde

PVS-Studio 7.40 has been released. The new version brings support for Visual Studio 2026 and Qt Creator 18, adds analysis of .NET 10 projects, enhances C# diagnostic rules, and includes other new features.

PVS-Studio 7.40: support for Visual Studio 2026, Qt Creator 18, .NET 10, and more

by Gleb Aslamov

From the article:

The new release introduces support for the fresh Visual Studio 2026. We're glad to present PVS-Studio plugin for Qt Creator 18.x. The plugin lets you run static analysis, view warnings, and handle your code directly within your IDE. Unreal Engine 5.5 brings a new tool called Horde, a platform that enables users to leverage CPU cycles on other machines to accelerate workloads. We've updated the documentation section on working with Unreal Engine projects and included instructions for using the analyzer in the Unreal Build Accelerator distributed build system.

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.

Structured iteration -- Andrzej Krzemieński

By Andrzej Krzemienski | Dec 15, 2025 03:44 PM | Tags: None

It is relatively easy to get your for-loops wrong. Luckily, C++ offers more and more bug-proof alternatives.

Structured iteration

by Andrzej Krzemieński

From the article:

These problems do not occur when you use the range-based for-loop.

This C++11 addition, apart from other conveniences, is a safety feature (as in language-safety): it is very hard to use it incorrectly. It is not flexible, or versatile. You have to pass it a range, you have to give a name to an element referenced in each iteration step. There is no "control variable" (like i), so you cannot get the operations on it wrong. A number of bugs are prevented simply by employing a range-based loop.

But what if my iteration is more complicated? What if I need to visit my elements in reverse?

 

Meeting C++ 24h++ is next week!

By Meeting C++ | Dec 11, 2025 08:02 AM | Tags: meetingcpp conference community

Meeting C++ is hosting a 24h++ Event on December 18th and 19th! Get your tickets now!

Meeting C++ 24h++

by Jens Weller

From the page:

Meeting C++ 24h++ starts at the 18. December 2025.

Meeting C++ hosts an 24h++ online event with a mix of live content and prerecorded talks from Meeting C++ 2025. With the 24h+ of the event, you should be able to attend some of the talks during the event plus you get access to all talks in the event to view after the event!

 

CLion 2025.3 Is Here, and It’s Epic: Constexpr Debugger, and More -- Oleg Zinovyev

By Blog Staff | Dec 9, 2025 06:01 PM | Tags: None

CLion 2025.3 is here, a landmark release with a groundbreaking Constexpr Debugger...

CLion 2025.3 Is Here, and It’s Epic: Faster Language Engine, Unique Constexpr Debugger, DAP Support, and Much More

by Oleg Zinovyev

From the article:

CLion 2025.3 represents one of our most ambitious releases yet. Beyond the extensive feature additions and workflow improvements, this version marks a fundamental shift in how we approach C and C++ language support – prioritizing speed and precision at every level.

The key release updates are as follows:

Faster performance with the CLion Nova language engine as the default.

Deeper insight into compile-time evaluations with the unique Constexpr Debugger.

Expanded debugger options with support for the Debug Adapter Protocol.

[...]

Trip report: Meeting C++ 2025 -- Sandor Dargo

By Blog Staff | Dec 9, 2025 03:36 PM | Tags: None

What a year I had! One more conference, one more trip report! I had the chance to go to Meeting C++ and give not just one but two talks!

Trip report: Meeting C++ 2025

by Sandor Dargo

From the article:

I remember that last year I said that Berlin in November is the perfect place to have a conference because you want to be inside that four-star hotel and not outside. This year, the conference was held a week earlier, and the weather was so nice that it was actually tempting to go out and explore.

But people resisted the temptation. The lineup and content were very strong — this year there were more than 50 talks across 5 different tracks. Also, Meeting C++ is a fully hybrid conference, so you can join any talk online as well.

It might sound funny, but I must mention that the food is just great at Meeting C++. It’s probably the conference with the best catering I’ve ever been to — from lunch to coffee breaks, everything was top-notch.

This year, there were no evening programs. I’m not complaining; it’s both a pity and a blessing, and I’m not sure how I feel about it. For example, when I first attended C++ On Sea, there were no evening events, and I really enjoyed discovering Folkestone in the evenings. Over the years, the schedule there got extended, and sometimes I had no time to visit my favorite places. But at least some socializing was guaranteed. One can say that you can do it on your own, but many of us are introverted, and if we’re not forced to socialize, we just won’t. That’s even easier to avoid in a big city like Berlin. I remember that last year I didn’t have time to go out until the end of the conference. It was different this year.

But let’s talk about the talks.

My three favourite talks

Let me share with you the three talks I liked the most. They are listed in chronological order...

C++ Enum Class and Error Codes -- Mathieu Ropert

By Blog Staff | Dec 5, 2025 03:33 PM | Tags: None

C++11 gave us enum class and while it’s great to have scoped enums I don’t find it great for error handling. Let’s talk about why.

C++ Enum Class and Error Codes

by Mathieu Ropert

From the article:

Most of my readers, I hope, have been able to use C++11 for a while now (if not hello, I’m sorry the world has changed to become this weird during your 14 years sleep). With it came a small change that allowed for better scoping of names without resorting to weird quirks: enum class. The idea is simple: owing to C, enum values in C++ belong to the class or namespace they are declared in but if we add the class keyword to the declaration they know become their own scope instead of leaking to their parent.

This was a simple quality of life change in the compiler to address a weakness in the language that folks usually worked around by either adding long prefix to the enum values (C style) or wrapping them within structs or classes (C++98/03 style). And with it came the incentive to migrate C era error code enums to scoped enums. But there’s a catch.

Trip report: Budapest C++ - Breaking & Building C++ -- Sandor Dargo

By Blog Staff | Dec 3, 2025 03:30 PM | Tags: None

The Budapest C++ Meetup was a great reminder of how strong and curious our local community is. Each talk approached the language from a different angle — Jonathan Müller from the perspective of performance, mine from design and type safety, and Marcell Juhász from security — yet all shared the same core message: understand what C++ gives you and use it wisely.

Trip report: Budapest C++ - Breaking & Building C++

by Sandor Dargo

From the article:

More than a hundred people registered, and the room quickly filled up with local developers eager to hear three technical talks. The atmosphere was lively and welcoming — it showed the strength of the C++ community in Budapest. In 2027, even WG21 might come to Hungary!

The evening began with Jonathan Müller’s talk, Cache-Friendly C++, followed by my own session on Strongly Typed Containers. Finally, Marcell Juhász closed the event with an insightful and hands-on presentation on Hacking and Securing C++.

Speeding up C++ functions with a thread_local cache -- Daniel Lemire

By Blog Staff | Dec 1, 2025 03:25 PM | Tags: None

When working with legacy or rigid codebases, performance bottlenecks can emerge from designs you can’t easily change—like interfaces that force inefficient map access by index. This article explores how a simple thread_local cache can dramatically improve performance in such cases, reducing repeated lookups from quadratic to near-constant time.

Speeding up C++ functions with a thread_local cache

by Daniel Lemire

From the article:

In large code bases, we are often stuck with unpleasant designs that are harming our performance. We might be looking for a non-intrusive method to improve the performance. For example, you may not want to change the function signatures.

Let us consider a concrete example. Maybe someone designed the programming interface so that you have to access the values from a map using an index.