Video & On-Demand : Standard C++

Over the past few months, we've looked at asynchronous I/O and network programming using Boost.Asio and Boost.Beast. Those libraries connect to your application through the use of callbacks. When orchestrating a sequence of asynchronous operations, it is up to the application to ensure that the callbacks are invoked in the proper sequence.

This "callback hell" problem has long been recognized in the JavaScript world, as all I/O operations in JavaScript (timers or XML HTTP Requests) are asynchronous. In the JavaScript world this lead to promise oriented APIs that allowed for a more linear notation in expressing a sequence of asynchronous operations. This led to the Promises/A+ specification for JavaScript promises.

Promise-cpp is an implementation of the Promises/A+ specification for C++. It can integrate with Boost.Asio and Boost.Beast for asynchronous network programming support for low-level I/O as well as HTTP and WebSocket APIs.

https://www.youtube.com/watch?v=YnTaumB5HVM

CopperSpice: Time to Sort Out std::chrono

By Ansel Sermersheim | Oct 28, 2023 11:30 AM | Tags: None

New video on the CopperSpice YouTube Channel:

Time to Sort Out std::chrono

by Barbara Geller and Ansel Sermersheim

About the video:

We just posted a new video about std::chrono. It provides an overview of the functionality which was added in C++11, C++17, and C++20. Please watch to find out how much of std::chrono your compiler actually supports. We were pretty surprised at what we discovered.

Please take a look and remember to subscribe.

Meeting C++ live with Kevlin Henney

By Meeting C++ | Sep 14, 2023 09:22 AM | Tags: meetingcpp kevlinhenney community

Meeting C++ hosted an AMA with Kevlin Henney:

Meeting C++ live with Kevlin Henney

by Jens Weller & Kevlin Henney

Watch now:

Dynamic CUDA with NVIDIA's Runtime Compilation -- Richard Thomson

By Legalize Adulthood | Aug 23, 2023 02:42 PM | Tags: None

Utah C++ Programmers has released a new video:

Dynamic CUDA with NVIDIA's Runtime Compilation

by Richard Thomson

From the video description:

Using CUDA is great way to accelerate tasks on the GPU. Regular CUDA programming compiles your C++ code into code that can execute on the GPU. But what if your problem domain is more dynamic and requires generation of code on the fly?

On the CPU you can use techniques like LLVM to compile code Just-in-Time (JIT) into the native CPU instruction set and call this code directly from your application. What about on the GPU?

The NVRTC (Runtime Compilation) library accepts CUDA C++ source code and creates modules of GPU ready code that you can execute on the GPU.

This month, Richard Thomson will give us an introduction to using the NVRTC library for runtime compilation and nvJitLink for runtime linking of CUDA C++ source code to execute code on the GPU. We'll use a simple fractal generator as the example, with a user provided "iteration formula" to generate a fractal image in the complex plane.

https://www.youtube.com/watch?v=9OCQb5RA-s0

CopperSpice: Template Parameters

By Ansel Sermersheim | Aug 22, 2023 11:31 AM | Tags: None

New video on the CopperSpice YouTube Channel:

Template Parameters

by Barbara Geller and Ansel Sermersheim

About the video:

Do you know the precise difference between a parameter and an argument? Where can a default argument appear for a template parameter? We have some answers in our newest C++ video.

Please take a look and remember to subscribe.

Using GitHub Actions for Continuous Integration -- Richard Thomson

By Legalize Adulthood | Aug 21, 2023 02:34 PM | Tags: None

Utah C++ Programmers has released a new video:

Using GitHub Actions for Continuous Integration

by Richard Thomson

From the video description:

GitHub actions allow you to set up continuous integration for your C++ project. You can configure, build and test your code in a variety of operating systems and hardware configurations.

This month, Richard Thomson will give us an introduction to GitHub actions for continuous integration of C++ projects. We'll look at how to set up automatic building and testing of code on various repository events, such as commits, pull requests, and so-on.

Some of the topics we will cover are:

How to configure GitHub actions from scratch

How to use some continuous integration project templates

How to run tests

How to integrate custom build/test environments

https://www.youtube.com/watch?v=1q8BQtvr8sY

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CppCon 2022 Back to Basics: Debugging in C++ -- Mike Shah

By Blog Staff | Aug 4, 2023 06:12 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!

Back to Basics: Debugging in C++

by Mike Shah

Summary of the talk:

I always tell my students, the debugger is your 'get out of jail free card' when working on a project. I say the same thing to professionals, debuggers are your 'get out of free jail card'. The reality is that programmers spend the majority of their time debugging as opposed to writing new code. Unfortunately many programmers do not learn how to use a debugger, or otherwise how they should approach debugging. In this talk I am going to show you how to debug C++ code, starting from the very basics and then demonstrating how a debugger like GDB can be used to help you track errors in CPU code. Attendees at this talk will learn names of debugging techniques (e.g. delta debugging), and I will demonstrate several debugging tools (stepping through code, capturing backtraces, conditional breakpoints, scripting, and even time traveling!) to demonstrate the power of debuggers. This is a beginner friendly talk where we are going to start from the beginning, but I suspect I may show a trick or two that folks with prior experience will appreciate.

CppCon 2022 C++ Lambda Idioms -- Timur Doumler

By Blog Staff | Aug 1, 2023 06:08 AM | Tags: None

C++ Lambda Idioms

by Timur Doumler

Summary of the talk:

Ever since they were introduced in C++11, lambdas have been an essential language feature. Each subsequent standard added more functionality: we got generic lambdas and init captures in C++14, constexpr lambdas in C++17, default-construction and assignment, explicit template arguments and more in C++20, and even more possibilities are coming in the upcoming C++23 standard.

In this talk, we are looking at various interesting things you can do with lambdas. Some of these are well-established, useful idioms; others are lesser known, surprising tricks. Have you ever inherited from a lambda? Can you think of three different ways to call a lambda recursively? Do you know what happens if we assign an immediately-invoked lambda expression to a static variable? If not, then this talk is for you.