The CppCon 2021 Field Trip will be an adventure into the mountains to sample classic mountain cuisine from Beau Jo’s, followed by a train trip over the far-famed Georgetown Loop.

Spend a fun-filled Sunday on October 24 with fellow attendees as we ascend to 9,101 ft (2,774 m) via air-conditioned buses and railroad coaches. This trip will encompass Geologic, Historic, Natural, and Culinary wonders west of Denver.

This year’s field trip is sponsored by the North Denver Metro C++ Meetup. Jason Turner, one of the meetup’s organizers, recommends:

You cannot go wrong with a trip up to Georgetown and a stop at Beau Jo’s for a truly Colorado experience. You get a feel for the amazing Rocky Mountains, a look into the mining past that shaped this state, and a taste of a Colorado classic! Just be aware these Pizzas can be ridiculously huge (and crazy tasty)! We always take visiting family to one of the Beau Jo’s locations, and you cannot beat the original in Idaho Springs. There’s also a local brewery right next door with grab-and-go, if you’re into that kind of thing.

Beau Jo’s is a Colorado institution, where we will sample some of their wonderful mountain pizzas in Idaho Springs, a mining boom town, now a historic landmark near the heart of many outdoor adventures.

After lunch, we will venture higher to Georgetown, and board the steam-powered Georgetown Loop to wind around an amazing train trip up and over itself to climb the mountain valley into Silver Plume, a mining camp started in the 1860’s silver rush.

If you are arriving for CppCon 2021 by Sunday morning, this is your opportunity to get to know some of your fellow attendees while touring some of the inspiring wonders Colorado has to offer.

See the CppCon 2021 Field Trip page for details.

Register here!

As already announced, CppCon 2021 this October will be the full normal in-person conference now that many of us can meet safely, and are just bursting with anticipation to see each other again in person… and also a coordinated online conference for those who aren’t yet ready to engage in person or for whom travel is difficult. The Call for Submissions is open for both in-person and online sessions, and we are planning to make much of the in-person and online content available in near-real-time to online attendees… including the in-person keynotes, which brings us to the opening talk of the conference…

CppCon 2021 will kick off on Monday, October 25 with Bjarne Stroustrup delivering the opening keynote live in person in Aurora, Colorado, USA. This is Stroustrup’s first in-person talk in North America since C++20 was completed, just before the pandemic lockdowns began. His talk connects C++’s roots with all the things that make C++20 a historic milestone – it’s not only the biggest release of C++ in a decade, but also the first edition of Standard C++ ever that is “D&E-complete,”containing all of the features (except only unified function call syntax) that Stroustrup described a quarter-century ago in The Design and Evolution of C++ as his goals for C++’s future development, including concepts, coroutines, and modules which in 2021 are for the first time now available as actual realities in production C++ compilers.

CppCon 2021 is proud to be the forum for Dr. Stroustrup’s landmark talk, which he describes as follows:

C++20: Reaching for the Aims of C++

Out of necessity C++ has been an evolving language. I outline some early ideals for C++, some techniques for keeping the evolution directed, and show how C++20 comes close to many of those ideals. Specific topics include type-and-resource safe code, generic programming, modularity, and the elimination of the preprocessor. Naturally, over the years, C++ has acquired many “barnacles” that can become obstacles to developing elegant and efficient code. That has been a recognized problem since the early days of C – Dennis Ritchie and I talked about it – so we must distinguish between what can be done and what should be done. The C++ Core Guidelines is the current best effort in that direction. The talk will start with a sequence of early design aim statements, and then match them directly to working C++20 examples and the Core Guidelines.

Early Bird Registration is now open for what will certainly be one of the most memorable CppCons ever this October 24-29. Register today!

Registration is now open for both online and in-person attendees. In-person attendees will require proof of being fully vaccinated, with the goal of further opening registration as we learn more about what will be safe in October.

We are very happy that CppCon 2021 can take place in person again this October, at the Gaylord Rockies, in Aurora, Colorado. We know that, by this fall, travel and onsite meetings will possible for at least part of our community to again engage safely in person.

But we’re also very aware that the pandemic won’t be “over” for everyone, everywhere by then, and we don’t want to leave anyone out, including people for whom travel is difficult even in normal times. So we’re announcing that CppCon 2021 will be a “hybrid” event with both in-person and online tracks.

We’re very pleased with the strong response to and success of CppCon 2020 online and plan to do something similar in 2021, integrated with the in-person event. We are still working out all the details for what a hybrid CppCon will look like, but we are confident that we can provide the CppCon engagement experience for both online and in-person attendees and we will let you know more details soon.

Here what’s next…

Soon we will be opening our Call for Submissions, for both online and in-person sessions. Even if you have never spoken at a conference before, why not submit a talk to CppCon, or encourage a colleague to do so when they have a cool perspective or technique to share?

Then, we’ll open Early Bird Registration for both online attendees and for in-person attendees who are vaccinated (or plan to be by October 1), with the goal of opening in-person registration further as we all learn more about what will be safe in October. Please consider whether your plans this fall can include joining us by connecting online, or traveling in-person to Aurora, Colorado, to be part of what will certainly be one of the most memorable CppCons ever this October 24-29.

Thank you very much for all your support for C++ and CppCon. We hope to see many of you in October, both online and in-person, and will have more details to share soon.

Great Success

Our experiment with an online experience for CppCon 2020 has proven to be a great success! We had almost a thousand (994) attendees that were willing to take a chance on our first online conference. To put that in perspective, that’s over fifty percent more than joined us for our first onsite conference in 2014.

In our attendee survey, it was clear that people preferred the onsite experience, but over eighty percent were either pleased or very pleased about attending an online CppCon. Some, who are unlikely to be able to make it to Aurora, were grateful for the opportunity to finally get to attend CppCon. I’ve appended a few comments to this post.

Trip Reports

For more in depth comments on the online CppCon experience, here are a few Trip Reports:

• CppCon 2020 Trip Report, by Conor Hoekstra
• Attending the virtual CppCon 2020, by Jens Weller
• CppCon 2020 Trip Report, by Shafik Yaghmour
• CppCon 2020 – The hallway track, by Thamara Andrade
• My CppCon 2020 trip report, by Honey Sukesan

Javier Estrada is reviewing sessions in several posts on his Se Habla C++ blog.

Continue reading →

We’ve had a couple of amazing days at our new online conference venue.

If you’ve been curious about how it’s working, we’ve got an opportunity for you. Since the conference is about half over, how about half off?

Use this registration code to register at a special rate of half off the regular $300 rate. For just $150 you can attend CppCon and see what all the excitement is about.

Keynote Speaker: Emery Berger

Emery Berger is a Professor in the College of Information and Computer Sciences at the University of Massachusetts Amherst, where he co-directs the PLASMA @ UMass lab.  To fully appreciate the work that Emery has done and the academic honors that he’s received, you really need to read his bio.

Emery takes performance seriously and that’s what this talk is about. He’ll discus a new approach to profiling called causal profiling. This approach has led to the development of a tool called Coz, which ships as part of standard Linux distros and supports C++, Rust, and Java. “Guided by Coz, we improved the performance of Memcached (9%), SQLite (25%), and accelerated six other applications by as much as 68%; in most cases, this involved modifying less than 10 lines of code and took under half an hour (without any prior understanding of the programs!).”

From his talk’s description:

In this talk, I’ll first discuss some of the significant and surprising challenges facing C++ programmers trying to achieve high performance on modern hardware platforms: performance is far less stable and predictable than you might think! I’ll present some experimental evidence that strongly suggests we can’t count on compiler optimizations to help us out of this hole: in particular, I’ll show — using a new experimental methodology — that the difference between clang’s -O2 and -O3 optimization levels is essentially indistinguishable from noise.

In this instructor interview, Kevin Carpenter welcomes Patrice Roy for a discussion of his CppCon Academy class, Managing Memory. Patrice has been a professor for over two decades and has been to every CppCon, but this is his first time at CppCon as a Ph.D graduate!

Patrice and Kevin discuss what attendees will get out of his class. This class is for people coming from other languages that want to do C++ right and for people who have been writing C++ that want to do it better, to get more control, more speed, and more resilience. There are a number of details of specialized knowledge, but they can be simple and fun. People will end the class knowing how to do things because they’ll have done them in the class.

In addition to his class, Patrice is also going to be presenting two talks for the Main Program. The idea for Some Things C++ Does Right comes from identifying the things about C++ that he misses most when teaching classes that use other languages.

The Surprising Costs of void() (and Other Not-Quite-Innocuous Evils) comes from the fact that as a professor grading the work of students he reads a lot of code written by bright people that are still learning, “so they do all sorts of weird things.” When he pointed these “weird things” out to other instructors he found that many knowledgable, experienced people don’t always recognizes some of these mistakes for what they are. This talk will give you a lot to think about.