Migrating VAST to C++20 - A Field Report

by Benno Evers

Recently, the VAST developers had a reason to celebrate. No, not the latest release—finally all our supported platforms have a working C++20 compiler available. Given that VAST is still comparatively moderate in size at around 70,000 lines of code and already uses C++17 extensively, we did not expect too much hassle. So we seized the chance, rolled up our sleeves and started converting.

The process was indeed mostly painless, but some errors still had us stumped for a while. Below we describe our experiences, in the hopes that they might be useful to others who attempt the same.

Parallel Algorithms of the STL with the GCC Compiler

by Rainer Grimm

GCC supports my favorite C++17 feature: the parallel algorithms of the Standard Template Library (STL). I recognized this a few days ago, and I'm happy to write a post about it and share my enthusiasm...

Software Architecture with C++, Book Review

by Bartlomiej Filipek

In April, we got a new book - from two Polish authors - Piotr and Adrian - on C++ Software Architecture. This one is fascinating and refreshing. While it won’t teach you all the latest C++ features or low-level tricks in our favorite language, it will move you to a higher level with architecture, building, patterns, design, and development for the cloud.

Let’s see what’s inside.

C++ Trainings at Meeting C++ 2021

by Jens Weller

Today I can give you a first overview on the planned trainings that accompany Meeting C++ 2021. All trainings are held online, the date is chosen by the trainers.

This years Meeting C++ conference focuses on learning and giving you the best experience online. Meeting C++ has chosen some of the best trainers to give you an opportunity to learn even more about C++ in 2021. Rainer Grimm, Patricia Aas and Slobodan Dmitrovic are the trainers for the first 3 fantastic courses.

Extended Aggregate Initialisation in C++17

by Jonathan Boccara

By upgrading a compiler to C++17, a certain piece of code that looked reasonable stopped compiling.

This code doesn’t use any deprecated feature such as std::auto_ptr or std::bind1st that were removed in C++ 17, but it stopped compiling nonetheless.

Understanding this compile error will let us better understand a new feature of C++17: extended aggregate initialisation...

C++20 three way comparison operator — ensure backward compatibility: Part 8

by Gajendra Gulgulia

In part one till seven of the tutorial series, we looked at how to use the C++20’s three way comparison operator. In this part of the tutorial series, we’ll look at the compatibility issues when using objects that were constructed before C++20 with the three way comparison operator and how to resolve them...

Full Specialization of Function Templates

by Rainer Grimm

As you may know from my previous post Template Specialization, function template can only be full but not partial specialized. To make my long story short: Don't specialize function templates. Just use function overloading...

Why do smart pointers null out the wrapped pointer before destroying it?

by Raymond Chen

When you null out a smart pointer type, the smart pointer type nulls out the old pointer before releasing it, rather than releasing the member and then setting it to null. Why does the old value get detached from the smart pointer before releasing it? Why not release it, and then set it to null?

C++20 three way comparison operator: Part 7

by Gajendra Gulgulia

In the fifth and sixth part of the tutorial series, I explained the comparison category std::strong_ordering and std::weak_ordering respectively with examples and use cases. In this part of the tutorial series, we take a closer look at the third and final comparison category, i.e. std::partial_ordering...

Classic Railroad Field Trip Announced

The CppCon 2021 Field Trip will be an adventure into the mountains to sample classic mountain cuisine from Beau Jo’s, followed by a train trip over the far-famed Georgetown Loop. Spend a fun-filled Sunday on October 24 with fellow attendees as we ascend to 9,101 ft (2,774 m) via air-conditioned buses and railroad coaches. This trip will encompass Geologic, Historic, Natural, and Culinary wonders west of Denver...