October 25, Pavia, Italy
November 6-8, Berlin, Germany
November 3-8, Kona, HI, USA
By TartanLlama | Jun 14, 2023 08:55 AM | Tags: None
All videos from the Pure Virtual C++ 2023 conference are now online.
Pure Virtual C++ Videos Available
by Sy Brand
From the announcement:
Overall we had 18 videos on a wide variety of C++ topics, from Rust interop, to value semantics, to improving compiler errors.
By Blog Staff | Jun 13, 2023 02:52 PM | Tags: None
Registration is now open for CppCon 2023! The conference starts on October 1 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 2023!
Lightning Talk: Cute Approach for Polymorphism in C++
by Liad Aben Sour Asayag
Summary of the talk:
I will talk about some tricks on how to stay generic and have good performance, while using polymorphism and virtual methods. Using aggregation.
By Blog Staff | Jun 13, 2023 12:01 PM | Tags: None
I continue my journey with concurrency patterns in today's post. The Thread-Safe Interface fits very well when the critical sections are just objects.
Dealing with Mutation: Thread-Safe Interface
by Rainer Grimm
From the article:
The naive idea to protect all member functions of a class with a lock causes, in the best case, a performance issue and, in the worst case, a deadlock.
A Deadlock
The small code snippet has a deadlock.
struct Critical{ void memberFunction1(){ lock(mut); memberFunction2(); ... } void memberFunction2(){ lock(mut); ... } mutex mut; }; Critical crit; crit.memberFunction1();Calling
crit.memberFunction1causes the mutexmutto be locked twice. For simplicity reasons, the lock is a scoped lock. Here are the two issues:
By Andrey Karpov | Jun 12, 2023 10:14 AM | Tags: tips terrible tips refactoring code review
In this article, you're going to find 60 terrible coding tips — and explanations of why they are terrible. It's a fun and serious piece at the same time. No matter how terrible these tips look, they aren't fiction, they are real: we saw them all in the real programming world.
60 terrible tips for a C++ developer
by Andrey Karpov
From the article:
Terrible tip N46. Write your code as if the chairman of the IOCCC judges will read it and as if they know where you live (to come and give you the prize).
It's a reference to a quote — "Always code as if the guy who ends up maintaining your code will be a violent psychopath who knows where you live". This is John F. Woods's phrase, however, it's sometimes credited to Steve McConnell who quoted it in his "Code Complete" book.
By Blog Staff | Jun 9, 2023 11:52 AM | Tags: None
Fold expressions exist in C++ since C++17 and significantly affect how we treat variadic templates. Back in the day, I wrote about fold-expressions as part of the metaprogramming series, but today we will explore the extreme cases of fold-expression usages.
Into the Extreme – Fold-Expressions
by Coral Kashri
From the article:
In the case of a unary fold (fold expression without initialization), this case is legal for 3 types of operators:
&&,||, and,.Operator &&
template <typename ...Args> auto and_cond(Args... args) { return (args && ...); }In case of empty parameters (for the call
and_cond()), the function will returntrue. A reasonable explanation for this decision might be that&&operator requires there won’t be any part that evaluatesfalse. In this case, there are no parts at all, so none of the parts evaluatesfalse, and therefore the result should be...
By Blog Staff | Jun 9, 2023 09:48 AM | Tags: None
Registration is now open for CppCon 2023! The conference starts on October 1 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 2023!
What’s New in C++23
by Sy Brand
Summary of the talk:
C++23 comes with a host of language and library features to simplify your code, make it more expressive, and give you more power to play with. With the help of my cats, I’ll walk you through the majority of upcoming features, showing you how they can work together and what benefits you’ll gain from upgrading when the time comes.
By Blog Staff | Jun 8, 2023 01:33 PM | Tags: None
Locking is a straightforward idea to protect a critical section. A critical section is a section of code that, at most, one thread can use at any time.
Dealing with Mutation: Locking
by Rainer Grimm
From the article:
Scoped locking is the idea of
RAIIapplied to a mutex. Scoped locking is also known as synchronized block and guard. The key idea of this idiom is to bind the resource acquisition and release to an object’s lifetime. As the name suggests, the lifetime of the object is scoped. Scoped means that the C++ run time is responsible for object destruction and, therefore, for releasing the resource.The class
ScopedLockimplements Scoped Locking.
By Blog Staff | Jun 7, 2023 02:43 PM | Tags: None
Registration is now open for CppCon 2023! The conference starts on October 1 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 2023!
Lightning Talk: The Future of C++
by Neil Henderson
Summary of the talk:
Hopefully a light-hearted, comedic and entertaining look at the future of C++ from an Australian perspective.
By Giovanni Dicanio | Jun 7, 2023 11:24 AM | Tags: None
Several times you need to pass data (including text) from cross-platform C++ code to platform-specific C++ code. If you don't pay enough attention, weird bugs can happen at the boundary.
The Case of the Two Billion Characters Long String
by Giovanni Dicanio
From the article:
What is going on here? What is the origin of this bug? Why is the string reported as being more than 2 billion characters long?
Let's try to solve this mystery, with a sprinkle of assembly language, too!
By Blog Staff | Jun 6, 2023 01:26 PM | Tags: None
C++ allows us to declare various forms of non-local objects: they usually live throughout the execution of the whole program. In this article, we’ll look at global variables, dynamic, and thread-local objects. We’ll also consider new features for safe initialization C++20.
Storage duration and Non-local Objects in C++
by Bartlomiej Filipek
From the article:
To start, we need to understand two key properties of an object in C++: storage and linkage. Let’s begin with the definition of storage, from [basic.stc#general]:
"The storage duration is the property of an object that defines the minimum potential lifetime of the storage containing the object. The storage duration is determined by the construct used to create the object."
An object in C++ has one of the following storage duration options:
