By Adrien Hamelin | Aug 23, 2019 11:12 AM | Tags: None
On to the next one!
Presenter Interviews: Matthew Butler
by Bob Steagall
From the article:
In this week’s presenter interview, Kevin chats with Matthew Butler today about his upcoming class at CppCon, Exploiting Modern C++: Building Highly-Dependable Software, his first WG21 meeting in Cologne, and his upcoming CppCon talk If You Can’t Open It, You Don’t Own It.
By Adrien Hamelin | Aug 22, 2019 11:19 AM | Tags: community
We’re in the final countdown to this year’s CppCon, which starts on September 16. To whet your appetite for this year’s conference, here’s another of the top-rated talks from last year. Enjoy – and register today for CppCon 2019!
Thoughts on a more powerful and simpler C++ (5 of N)
by Herb Sutter
Summary of the talk:
Perhaps the most important thing we can do for C++ at this point in its evolution is to make sure we preserve its core strengths while also directing its evolution in ways that make it simpler to use. That is my own opinion at least, so this talk starts with a perspective question: What “is C++,” really? The language continues to evolve and change; as it does so, how can we be sure we’re picking C++ evolutionary improvements that not only don’t lose its “C++-ic” qualities, but make it a better C++ than ever?
At recent CppCons, I’ve spoken about several of my own personal C++ evolution efforts and experiments, and why I think they’re potentially important directions to explore for making C++ both more powerful and also simpler to use. The bulk of the talk is updates on two of these:
1. Lifetime and dangling: At CppCon 2015, Bjarne Stroustrup and I launched The C++ Core Guidelines in our plenary talks. In my part starting at 29:06, I gave an early look at my work on the Guidelines “Lifetime” profile, an approach for diagnosing many common cases of pointer/iterator dangling at compile time, with demos in an early MSVC-based prototype. For this year’s CppCon, I’ll cover what’s new, including:
• use-after-move diagnoses
• better support for the standard library out of the box without annotation
• more complete implementations in two compilers: in MSVC as a static analysis extension, and in a Clang-based implementation that is efficient enough to run during normal compilation
• the complete 1.0 Lifetime specification being released on the Guidelines’ GitHub repo this monthI’ll summarize the highlights but focus on what’s new, so I recommend rewatching that talk video as a refresher for background for this year’s session.
2. Metaclasses: In my CppCon 2017 talk, I gave an early look at my “metaclasses” proposal to use compile-time reflection and compile-time generation to make authoring classes both more powerful and also simpler. In this case, “simpler” means not only eliminating a lot of tedious boilerplate, but also eliminating many common sources of errors and bugs. For this year, we’ll cover what’s new, including:
• an update on the Clang-based implementation, which now supports more use cases including function parameter lists
• new examples, including from domains like concurrency
• an updated P0707 paper, with more links to working examples live on Godbolt, being posted in the next few weeks for the pre-San Diego committee mailing
By Adrien Hamelin | Aug 20, 2019 10:41 AM | Tags: performance community
We’re in the final countdown to this year’s CppCon, which starts on September 16. To whet your appetite for this year’s conference, here’s another of the top-rated talks from last year. Enjoy – and register today for CppCon 2019!
OOP Is Dead, Long Live Data-oriented Design
by Stoyan Nikolov
Summary of the talk:
For decades C++ developers have built software around OOP concepts that ultimately failed us - we didn’t see the promises of code reuse, maintenance or simplicity fulfilled, and performance suffers significantly. Data-oriented design can be a better paradigm in fields where C++ is most important - game development, high-performance computing, and real-time systems.
The talk will briefly introduce data-oriented design and focus on practical real-world examples of applying DoD where previously OOP constructs were widely employed.
Examples will be shown from modern web browsers. They are overwhelmingly written in C++ with OOP - that’s why most of them are slow memory hogs. In the talk I’ll draw parallels between the design of systems in Chrome and their counterparts in the HTML renderer Hummingbird. As we’ll see, Hummingbird is multiple times faster because it ditches OOP for good in all performance-critical areas.
We will see how real-world C++ OOP systems can be re-designed in a C++ data-oriented way for better performance, scalability, maintainability and testability.
By Ansel Sermersheim | Aug 19, 2019 10:00 AM | Tags: None
New video on the CopperSpice YouTube Channel:
Lambdas in Action
by Barbara Geller and Ansel Sermersheim
About the video:
In this video, we discuss lambda expressions in detail and provide precise definitions of similar sounding terms like functor, function object, function pointer, and std::function. By explaining some real examples from our production code, we show how lambda expressions can be used to simplify complex operations by providing encapsulation for the implementation of a callback.
Please take a look and remember to subscribe!
By Adrien Hamelin | Aug 19, 2019 09:54 AM | Tags: None
We’re in the final countdown to this year’s CppCon, which starts on September 16. To whet your appetite for this year’s conference, here’s another of the top-rated talks from last year. Enjoy – and register today for CppCon 2019!
Concepts: The Future of Generic Programming (the future is here)
by Bjarne Stroustrup
Summary of the talk:
Concepts have arrived. They will change the way we think about programming. Implementations are available in GCC and Clang. Many fundamental concepts are in the standard committee’s working paper and the next generation of the STL depends critically on concepts.
After briefly introducing concepts, I consider their role in design. What makes a good/useful concept? How do you design good concepts and use them well?
From a language-technical point of view, concepts are a way of constraining template arguments. From a design perspective, they are a focus comparable to user-defined types (classes): The intent is for a concept to represent a fundamental concept in an applications domain (hence the name “concept”).
I will mention technical issues recently resolved or currently being resolved in the committee, but my primarily focus is not concepts as a language mechanism but as a support for the development of good software.
By Blog Staff | Aug 15, 2019 12:21 PM | Tags: None
Bjarne Stroustrup describing C++ in one minute:
C++: The Invisible Engine of Everything
By Adrien Hamelin | Aug 14, 2019 11:17 AM | Tags: community
Another interview.
Presenter Interviews: Stephan T. Lavavej
by Kevin Carpenter
From the article:
In this week’s presenter interview, Kevin Carpenter welcomes Stephan T. Lavavej (STL) for a preview of his upcoming talk, Floating-Point charconv: Making Your Code 10x Faster With C++17’s Final Boss. Stephan discusses achieving a 3x to 10x speed up with charconv in C++17.
By Adrien Hamelin | Aug 7, 2019 11:17 AM | Tags: community
Discover the person presenting at CppCon.
Presenter Interviews: Kate Gregory
by Kevin Carpenter
From the article:
In this week’s presenter interview, Kevin Carpenter welcomes back Kate Gregory to preview her upcoming talk Naming is Hard: Let’s Do Better. Kate’s talk will discuss how bad we as C++ developers can be when it comes to naming things and how we could improve.
By Adrien Hamelin | Aug 5, 2019 12:48 PM | Tags: community
Take a listen.
Approval Tests with Clare Macrae
by CppCast
From the article:
Clare is an independent consultant, helping teams streamline their work with legacy and hard-to-test C++ and Qt code.
She has worked in software development for over 30 years, and in C++ for 20 years...
By Adrien Hamelin | Aug 5, 2019 12:44 PM | Tags: community
Go check it out.
My C++Now Talk on Smart Output Iterators
by Jonathan Boccara
From the article:
If you’ve been reading Fluent C++ over the past few weeks, then you’ve noticed that we spent some time on smart output iterators...