By Adrien Hamelin | Oct 15, 2021 01:54 PM | Tags: intermediate
Simple and surprising.
A simple and clear example of undefined behavior
by Jens Weller
From the article:
If you work with C++ you'll sooner or later will have to deal with undefined behavior. I stumbled upon an easy example to help folks understand the scope of undefined behavoir...
By Blog Staff | Oct 15, 2021 10:07 AM | Tags: None
Thanks to the Chinese C++ experts who did this translation of Bjarne Stroustrup's latest History of Programming Languages paper! That's a massive job, and translations of technical papers are very rare in our field.
Bjarne Stroustrup: Thriving in a crowded and changing world: C++ 2006-2020
See also: Pre-recording and Q&A
ACM/SIGPLAN History of Programming Languages conference, HOPL-IV. London. June 2020.
All the HOPL-4 papers are posted as Proceedings of the ACM on Programming Languages Vol. 4.
By Adrien Hamelin | Oct 11, 2021 12:50 PM | Tags: intermediate
The series continue.
Dependent Names
by Rainer Grimm
From the articles:
A dependent name is essentially a name that depends on a template parameter. A dependent name can be a type, a non-type, or a template parameter. To express that a dependent name stands for a type or a template, you have to use the keywords typename or template...
By Adrien Hamelin | Oct 8, 2021 01:03 PM | Tags: community
New capabilities.
Compiler Explorer with Cmake
by Gajendra Gulgulia
From the article:
Compiler explorer has been one of the most widely used online tool for compiling C++ code, doing experiment with C++ features, sharing code snippets with friends and colleagues and also (my favorite feature) to compare and prove with the help of assembly code why a certain way of coding might be good or bad compared to another way.
Recently compiler explorer added support for compiling multiple files with CMakeLists.txt [1] . This opens up a new possibilities for developers around the world from testing complex pieces of code to testing the compilation behavior of the same.
In this issue, I would like to give a walk through on how to set up a simple layout of three files compiled with CMakelists.txt. Note that the focus is on setting up compiler explorer for multiple files and not on code efficiency. Also the article might at first glance look lengthy, but it may only be due to 19 images in the tutorial. So don’t get weighed down by the size of the article and lets start!
By Adrien Hamelin | Oct 8, 2021 12:58 PM | Tags: c++11
Are you using them?
A Recap on User Defined Literals
by Jonathan Boccara
From the article:
User defined literals were introduced in C++11, evolved in C++14 and C++17, and are a nice way to write more expressive code.
The general idea behind user defined literals is that they allow to write a value and tack on a term describing what this value represents. For example:
auto const quantity = 42_bottles_of_water;In this expression, 42 is the value and _bottles_of_water is the user defined suffix. The expression as a whole is a user defined literal.
A common usage of user defined literals is to represent units, but they can also be used to add meaning to values in more general contexts.
Here is how to write user defined literals in C++11, C++14 and C++17...
By Jens Maurer | Sep 30, 2021 11:56 AM | Tags: None
First steps using modern C++
Improving Stability with Modern C++, Part 1 — Getting Started
by Ralph Kootker, FactSet
From the article:
While the C++11 standard recently had its 10th birthday, there are still developers out there using modern C++ for the first time. With that in mind, we’ve prepared a series of short introductory posts on the features of C++11 and beyond.
By Adrien Hamelin | Sep 27, 2021 12:38 PM | Tags: c++20
Learn to use them.
C++20 Coroutines — Complete* Guide
by Šimon Tóth
From the article:
C++20 brought us initial support for coroutines. In this article, we will go over several examples of coroutines that build upon each other. Word of warning, though, the support in C++20 is mainly targeted at library implementors. C++23 should be bringing additional support that should cover at least the most common use cases...
By Adrien Hamelin | Sep 27, 2021 12:36 PM | Tags: c++20
The series continue.
C++20 Coroutine Iterators
by Martin Bond
From the article:
In my first blog post about C++20 Coroutines I introduced the concepts behind a synchronous or generator style coroutine and developed a template class to support coroutines for any data type.
In this post I’ll add an iterator to the template to support the range-for loop and iterative algorithms. You may want to review that post before reading this one but the following code should act as a reminder about how to write and use a coroutine to read two floating point values into a data structure for subsequent analysis...
By Adrien Hamelin | Sep 24, 2021 12:45 PM | Tags: c++17
Did you know about them?
Smart Tricks with Parameter Packs and Fold Expressions
by Rainer Grimm
From the article:
To complete my post about variadic templates and fold expressions, I present in this post smart tricks using parameter packs and fold expressions...
By Adrien Hamelin | Sep 24, 2021 12:43 PM | Tags: c++20
What do you think?
Concepts — case studies
by Andrzej Krzemieński
From the article:
This post has been inspired by the readers’ questions about using concepts to solve real problems. We will have a look at two such problems and see if, and how, concepts can help...