October 25, Pavia, Italy
November 6-8, Berlin, Germany
November 3-8, Kona, HI, USA
By Jordi Mon Companys | Jun 27, 2024 07:33 AM | Tags: safety
Sean Baxter demonstrates memory safe C++ using his Circle compiler
Safe C++
Sean Baxter
From the talk:
Does a subset of a superset of C++ exists that achieves similar safety guarantees to rust, is useful and expressive enough, and is compatible with today's C++? If so, is anyone mad enough to do it? There is an answer to that
By Blog Staff | Jun 25, 2024 03:08 PM | Tags: None
In this installment we are going to explore the relationships between trivial relocation and move assignments.
Qt and Trivial Relocation (Part 2)
by Giuseppe D'Angelo
From the article:
Last time we started our investigation of trivial relocation by considering an important use-case: reallocating a vector. This happens when a vector reaches its capacity, but more storage is needed.
Let’s now consider a different operation: erasing an element from the middle of a QVector.
How do we go about it?
By Blog Staff | Jun 24, 2024 11:11 AM | Tags: None
Registration is now open for CppCon 2024! The conference starts on September 15 and will be held in person in Aurora, CO. To whet your appetite for this year’s conference, we’re posting videos of some of the top-rated talks from last year's conference. Here’s another CppCon talk video we hope you will enjoy – and why not register today for CppCon 2024!
Lightning Talk: Let's Fix Sparse Linear Algebra with C++. It'll Be Fun and Easy!
by Benjamin Brock
Summary of the talk:
Sparse linear algebra is hard. There are a large variety of different sparse linear algebra formats, and they all require obtuse index arithmetic in order to use. But what if we could fix this? In this talk, I'll present an idea for "fixing sparse linear algebra" using customization points, the ranges library, and high-level multi-dimensional iteration.
By Blog Staff | Jun 22, 2024 11:08 AM | Tags: None
Registration is now open for CppCon 2024! The conference starts on September 15 and will be held in person in Aurora, CO. To whet your appetite for this year’s conference, we’re posting videos of some of the top-rated talks from last year's conference. Here’s another CppCon talk video we hope you will enjoy – and why not register today for CppCon 2024!
Lightning Talk: Implementing Coroutines Using C++17
by Alon Wolf
Summary of the talk:
In this lightning talk, we will explore the journey of implementing coroutines in C++17 before they were added to the language in C++20.
The implementation uses macros, template metaprogramming, assembly functions, and more that resulting in working coroutines despite somewhat "horrible" code.
Discover how local variables within the coroutine body were leveraged to calculate frame sizes and ensure correct variable lifetimes during suspension, resumption, and destruction.
By Blog Staff | Jun 21, 2024 02:21 PM | Tags: None
This article explores techniques to access specific elements within a C++ parameter pack by index. It delves into the use of std::tie for creating a tuple of lvalue references and explains how std::forward_as_tuple can preserve the original reference categories of the parameters. Additionally, it highlights a proposed feature in C++26, Pack Indexing, which aims to simplify this process significantly.
Pulling a Single Item From a C++ Parameter Pack by its Index
by Raymond Chen
From the article:
Suppose you have a C++ parameter pack and you want to pluck out an item from it by index.
template<int index, typename...Args> void example(Args&&... args) { // how do I access the index'th args parameter? }One solution is to use
std::tie:template<int index, typename...Args> void example(Args&&... args) { auto& arg = std::get<index>( std::tie(args...)); }
By Blog Staff | Jun 20, 2024 11:04 AM | Tags: None
Registration is now open for CppCon 2024! The conference starts on September 15 and will be held in person in Aurora, CO. To whet your appetite for this year’s conference, we’re posting videos of some of the top-rated talks from last year's conference. Here’s another CppCon talk video we hope you will enjoy – and why not register today for CppCon 2024!
C++ Memory Model: from C++11 to C++23
by Alex Dathskovsky
Summary of the talk:
In the realm of C++ development, threading and memory management play a crucial role in crafting highly parallel and optimized programs. However, the absence of a memory model in C++98 posed challenges. Thankfully, with the advent of C++11, significant changes were introduced, including the introduction of a memory model, which brought forth a plethora of new and exciting tools for developers to leverage. This talk aims to delve into the realm of the C++ memory model, showcasing the arsenal of tools at our disposal. Attendees will gain insights into how CPUs and compilers optimize code and understand the criticality of adhering to the memory model correctly. Practical guidelines on utilizing these tools effectively will also be explored.
Throughout the talk, we will illustrate practical examples and share best practices for utilizing the diverse set of tools now available to us. From atomic operations to memory barriers, we will explore the range of techniques that allow us to develop robust and thread-safe code.
This talk will also illustrate the newer tools from newer C++ standards like JThread and so this talk will show how memory model is used and how it advanced since C++11.
By Blog Staff | Jun 18, 2024 11:01 AM | Tags: None
Registration is now open for CppCon 2024! The conference starts on September 15 and will be held in person in Aurora, CO. To whet your appetite for this year’s conference, we’re posting videos of some of the top-rated talks from last year's conference. Here’s another CppCon talk video we hope you will enjoy – and why not register today for CppCon 2024!
Lightning Talk: Help! My Expression Template Type Names Are Too Long!
by Braden Ganetsky
Summary of the talk:
Even the name of this talk is too long! If we're ever working with expression templates, we can easily make type names long enough to slow down compilation time. Suddenly our "zero-overhead" expression templates start giving a large compile time overhead. I'll show off a C++20 trick to fix this problem.
By Blog Staff | Jun 17, 2024 03:21 PM | Tags: None
The opening keynote of CppCon 2024 is just 89 days away!
If you're interested in savings, the Early Bird discount for on-line and on-site tickets is available until this Friday, June 21. After that tickets will still be available right up to the conference, but at the full ticket price.
To register for CppCon 2024 with the Early Bird discount, click this link this week.
For details of on-line and on-site tickets, see the Registration page which includes information about student registration discounts, group rates, the CppCon Academy (extra pre- and post-conference classes by world-renowned instructors), the diversity dinner, the "Meet the Presenters" banquet, and much more!
By Blog Staff | Jun 17, 2024 11:28 AM | Tags: None
Some time ago, I wrote about how injected class names were the C++ feature you didn’t even realize that you were using. Injected class names let you use the plain name for the class being defined without needing to fully qualify it with namespaces and template parameters. Furthermore, injected class names are public and can be inherited.
“But wait, I’m trying to use the injected class name of my base class, but the compiler won’t accept it.”
Why Can’t I Find the Injected Name of a Templated Class’s Templated Base Class?
by Raymond Chen
From the article:
Some time ago, I wrote about how injected class names were the C++ feature you didn’t even realize that you were using. Injected class names let you use the plain name for the class being defined without needing to fully qualify it with namespaces and template parameters. Furthermore, injected class names are public and can be inherited.
“But wait, I’m trying to use the injected class name of my base class, but the compiler won’t accept it.”
template<typename T> struct Base { Base(T value); }; template<typename T> struct Derived : Base<T> { Derived(T value) : Base(value) {} };This generates a compiler error.
By Blog Staff | Jun 16, 2024 10:57 AM | Tags: None
Registration is now open for CppCon 2024! The conference starts on September 15 and will be held in person in Aurora, CO. To whet your appetite for this year’s conference, we’re posting videos of some of the top-rated talks from last year's conference. Here’s another CppCon talk video we hope you will enjoy – and why not register today for CppCon 2024!
Lightning Talk: Filling the Bucket: Reading Code, C++ Code Interviews & Exams
by Amir Kirsh
Summary of the talk:
We are going to review and practice a reading code challenge. Reading code skills are quite important, maybe even more than writing code. So let's dive together into filling the bucket code reading challenge!
