By Adrien Hamelin | Sep 24, 2020 11:37 AM | Tags: community
And another.
CppCon 2020 Trip Report
by Conor Hoekstra
From the article:
This was my second time attending CppCon. The first time I attended was in 2019, when I gave my first CppCon presentation in two parts, Algorithm Intuition - although I personally recommend the C++Now 2019 version which is 30 minutes shorter.
By Adrien Hamelin | Sep 24, 2020 11:35 AM | Tags: community
And another.
CppCon 2020 Trip Report
by Shafik Yaghmour
From the article:
CppCon 2020 was online this year due to Covid-19. I was not sure what to expect from an online only conference. I had heard mildly positive feedback from recent online only conferences but this would be my first experience. For the most part the experience exceeded my expectations. There were were technical problems here and there but mostly it ran smoothly. It was fatiguing to watching videos for so long but since I was home I was able to stretch in between sessions and move around and that usually helped...
By Adrien Hamelin | Sep 24, 2020 11:34 AM | Tags: community
First trip report.
Attending the virtual CppCon 2020
by Jens Weller
From the article:
Here is my virtual trip report about attending CppCon 2020 in remo. Thanks to all volunteers, speakers and attendees of this years virtual edition for making this event possible...
By Geoff | Sep 21, 2020 12:26 PM | Tags: None
A history, some negative examples, and some positive examples of using object oriented programming in C++.
The Last Vestiges of Object Orientated Programming
by Geoffrey Viola
From the article:
Object oriented programming is not as popular as it was. As with any programming language feature it can be abused. Multiple inheritance, long inheritance chains, and needless inheritance can add unnecessary complexity. There are few cases where it works well in C++: building product types, enforcing an invariant, and dynamic polymorphism. Generally, classes should follow one of these deliberately to follow the single responsibility principle, but there are exceptions.
By triangles | Sep 21, 2020 12:24 PM | Tags: None
A look at one of the most popular build systems for C and C++.
Introduction to modern CMake for beginners
Internal Pointers
From the article:
CMake is a collection of open-source and cross-platform tools used to build and distribute software. In recent years it has become a de-facto standard for C and C++ applications, so the time has come for a lightweight introductory article on the subject.
By Adrien Hamelin | Sep 21, 2020 11:56 AM | Tags: c++20
constexpr is getting yet again more accessible.
constexpr std::vector and std::string in C++20
by Rainer Grimm
From the article:
Probably the most viral keyword in modern C++ is constexpr. With C++20, we have a constexpr std::vector and a constexpr std::string. Additionally, both containers can be manipulated with the constexpr algorithms of the Standard Template Library...
By Adrien Hamelin | Sep 21, 2020 11:53 AM | Tags: intermediate
Quick A: For certain members only.
Recently on SO:
Is std::unique_ptr<T> required to know the full definition of T?
Most templates in the C++ standard library require that they be instantiated with complete types. However shared_ptr and unique_ptr are partial exceptions. Some, but not all of their members can be instantiated with incomplete types. The motivation for this is to support idioms such as pimpl using smart pointers, and without risking undefined behavior...
By Adrien Hamelin | Sep 18, 2020 10:49 AM | Tags: stl
If you had troubles.
What std::exchange does, and how to remember it
by Jonathan Boccara
From the article:
std::exchange was introduced in the C++ standard library in C++14 under the header <utility>.
Its name suggests that it’s a general-purpose and useful function, and its template prototype working with any type confirms this impression.
I don’t know about you, but I always had a problem with std::exchange: I couldn’t remember what it was doing. I learnt several times the operations that std::exchange performs, but each time I forgot them soon after.
Then at some point it clicked: std::exchange is a setter returning the old value. Ignoring the name “exchange” but thinking of it as a “setter” helped me make it stick to my mind.
It might just be me having a hard time with std::exchange for some reason. But just in case you also have issues remembering the operations of std::exchange, let’s see why std::exchange has this meaning, and why this meaning is not obvious from its name.
This should help you remember it once and for all...
By Adrien Hamelin | Sep 17, 2020 11:01 AM | Tags: c++20
New library type.
std::span in C++20: Bounds-Safe Views for Sequences of Objects
by Rainer Grimm
From the article:
In my seminar, I often hear the question: How can I safely pass a plain array to a function? With C++20, the answer is quite easy: Use a std::span...
By Adrien Hamelin | Sep 17, 2020 10:57 AM | Tags: c++20
Not so easy, but still useful.
Concept archetypes — update
by Andrzej Krzemieński
From the article:
An observant reader indicated that in the previous post where I was trying to implement a concept archetype — a type with minimal interface that models a given concept — I actually failed. This deserves a closer examination...