C++20 Ranges are complete in Visual Studio 2019 version 16.10

by Casey Carter

We are proud to announce completion of our implementation of C++20 Ranges in the Standard Library in the VS2019 v16.10 release under/std:c++latest. We announced the first useful user-visible parts of Ranges in VS 2019 v16.6 in mid 2020, the trickle accelerated into a gushing stream, and the final parts are now in place. This represents a huge body of work with input from multiple open-source contributors over the last two years...

Class Templates

by Rainer Grimm

A function template represents a family of functions. Accordingly, a class template represents a family of classes. Today, I want to introduce class templates...

Building LLVM in 90 seconds using Amazon Lambda

by Nelson Elhage

Last week, Frederic Cambus wrote about building LLVM quickly on some very large machines, culminating in a 2m37s build on a 160-core ARM machine.

I don’t have a giant ARM behemoth, but I have been working on a tool I call Llama, which lets you offload computational work – including C and C++ builds – onto Amazon Lambda. I decided to see how good it could do at a similar build...

The Subtle Dangers of Temporaries in for Loops

by Jonathan Boccara

Even though very convenient to write concise code, temporaries are an endless source of bugs in C++.

Are we allowed to use a temporary in a range based for loop?

Pure Virtual C++ 2021

Join us for a free, one-day conference for the entire C++ community! We will be streaming live on Learn TV and providing resources to contribute towards your C++ learnings and expertise.

What’s Next: A Roadmap for CLion 2021.2

by Anastasia Kazakova

CLion 2021.1 is now released along with the first bug-fix update 2021.1.1 addressing some of the most critical issues which unfortunately squeezed through our testing procedures. We do hope you are enjoying the update now and giving the new data flow analysis, Makefile and dynamic analysis in remote mode, and C/C++ postfix completion a try. We are listening to your feedback carefully and planning the upcoming bug-fix updates accordingly. It’s also time to move forward and see what CLion 2021.2 may look like!

All vcpkg enterprise features now generally available: versioning, binary caching, manifests and registries

by Augustin Popa

We are announcing today that all major vcpkg enterprise features are no longer experimental. The latest vcpkg release makes versioning, binary caching, manifests and registries generally available to any developer, team or enterprise...

Function Templates - More Details about Explicit Template Arguments and Concepts

by Rainer Grimm

In the last post "Function Templates", I wrote about the overloading of function templates and automatically deducing the return type of a function template. Today, I dive deeper and specify explicitly the template arguments of a function template and bring concepts into the play...

Predefined C++20 Concepts: Callables

by Bartlomiej Filipek

Before you start implementing your custom concepts, it’s good to review some goodies in the Standard Library. There’s a high chance that there’s already a predefined concept for you.

Today let’s have a look at concepts related to callable objects...

A Default Value to Dereference Null Pointers

by Jonathan Boccara

With C++17, modern C++ has acquired a nullable object: std::optional. optional has a pretty rich interface, in particular when it comes to handling null optionals.

On the other hand, the oldest nullable type in C++, pointers, doesn’t have any helper to make the handling of its nullity more expressive.

Let’s see what we can do about it, to make our code using pointers, smart or raw, easier to read...