Sy Brand

The final specifier in C++ marks a class or virtual member function as one which cannot be derived from or overriden. For example, consider the following code: 

If we attempt to write a new class which derives from derived then we get a compiler error: 

The final specifier is useful for expressing to readers of the code that a class is not to be derived from and having the compiler enforce this,

Last month a large contingent from the Microsoft C++ team attended CppCon. We gave fourteen presentations covering our tools, developments in the standard, concepts which underlie the work we do, and more.
We also recorded an episode of CppCast with Microsoft MVPs Rob Irving and Jason Turner.

explicit(bool) is a C++20 feature for simplifying the implementation of generic types and improving compile-time performance.
In C++ it is common to write and use types which wrap objects of other types. std::pair and std::optional are two examples, but there are plenty of others in the standard library,

Today we have a short guest post from Rob Irving, host of CppCast to tell us about an episode he recorded with our team.

 
During CppCon 2019 the hosts of CppCast had a chance to sit down with Marian Luparu,

The Microsoft C++ team will have a booth and many talks covering a wide range of topics at CppCon 2019. Come say hi to our team outside Aurora D and attend our talks to learn what’s new in our tooling, dive into new features in the standard,

Summary
CPPP is a new C++ conference in Paris, France. Its first iteration ran for a single day with three parallel tracks, drawing in 160 attendees.
The conference great on all fronts: the speakers & talks were varied and high-quality, the venue was right next to the Eiffel Tower and had plenty of space,

Writing good documentation is hard. Tools can’t solve this problem in themselves, but they can ease the pain. This post will show you how to use Sphinx to generate attractive, functional documentation for C++ libraries, supplied with information from Doxygen. We’ll also integrate this process into a CMake build system so that we have a unified workflow.

Visual Studio 2019 Preview 2 was a huge release for us, so we’ve written a host of articles to explore the changes in more detail. For the short version, see the Visual Studio 2019 Preview 2 Release Notes.

What’s New in CMake
C++ Binary Compatibility and Pain-Free Upgrades
New Code Analysis Checks – use-after move and coroutine
Concurrency Code Analysis
Introducing the New CMake Project Settings UI
In-Editor Code Analysis
Productivity Improvements
Template IntelliSense Improvements
Backend Improvements: New Optimizations,

This post is also available on Simon Brand’s blog
C++17 merged in a paper called Guaranteed copy elision through simplified value categories. The changes mandate that no copies or moves take place in some situations where they were previously allowed, e.g.:

You can see this behavior in compiler versions Visual Studio 2017 15.6,