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Explore the Doom C Codebase in VS Code | Learn to Navigate C and C++ Code on Linux -- Greg Law

By philsquared | Aug 8, 2025 01:18 AM | Tags: None

How do you quickly explore an unfamiliar C or C++ codebase? We'll use Doom as an example to demonstrate how to navigate an unfamiliar codebase.

Explore the Doom C Codebase in VS Code | Learn to Navigate Complex C and C++ Code on Linux

by Greg Law

From the description:

Using the classic Doom C program on Linux as our real-world example, we trace the exact moment a zombie is killed and backtrack through the codebase to understand how it happened [..] using Undo’s Time Travel Debugging technology.

C++ in Embedded Systems - Interview with Author Amar Mahmutbegović

By Meeting C++ | Jul 20, 2025 04:43 AM | Tags: meetingcpp intermediate embedded community c++23 c++20 c++17 basics

This weeks interview with Amar about his book on C++ on embedded systems:

C++ in Embedded Systems Interview with Author Amar Mahmutbegović

by Jens Weller

Watch the video

CppCon 2024 The UB Detector: constexpr -- Andreas Fertig

By Blog Staff | Jun 26, 2025 01:28 PM | Tags: None

Registration is now open for CppCon 2025! 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 2025!

Lightning Talk: The UB Detector: constexpr

by Andreas Fertig

Summary of the talk:

A constexpr function evaluated at compile time is free of any undefined behaviour they say. Do you think that statement is true as well?

CppCon 2024 Modern C++ Error Handling -- Phil Nash

By Blog Staff | Jun 24, 2025 01:25 PM | Tags: None

Modern C++ Error Handling

by Phil Nash

Summary of the talk:

We’ve had exceptions in C++ since before the first standard. C++17 introduced std::optional and C++23 std::expected (along with the so-called Monadic Operations for both types).

What should we use and when?

Meanwhile we still have older approaches, such as boolean or error code returns, as well as global or thread local error status or pointer or reference arguments.

Do these still have a place?

And where does assert fit in? And the (hopefully) upcoming contracts?

Perhaps more importantly, once we’ve examined all the trade-offs, can we defer any of those decisions to when we are best positioned to commit to them?

Erroneous conditions can have a big impact on your code’s safety and security, so error handling shouldn’t just be left to the “exercise left for the reader” in the books we used to read. Let’s get this all straight.

CppCon 2024 How Far Should You Indent Your Code? - The Number Of The Counting -- Dave Steffen

By Blog Staff | Jun 20, 2025 01:22 PM | Tags: None

Lightning Talk: How Far Should You Indent Your Code? - The Number Of The Counting

by Dave Steffen

Summary of the talk:

Coding Standards have to say something about how we indent our code. Is there a definitive answer?

CppCon 2024 Guide to Linear Algebra With the Eigen C++ Library -- Daniel Hanson

By Blog Staff | Jun 18, 2025 01:19 PM | Tags: None

Guide to Linear Algebra With the Eigen C++ Library

by Daniel Hanson

Summary of the talk:

Linear algebra is an essential part of scientific programming, particularly in domains such as quantitative finance, data science, physics, and medical research. It is also relevant to imaging in game development. As C++ did not have all the convenient built-in multidimensional array capabilities and supporting libraries that came with typical Fortran platforms, scientific programmers making the transition to C++ back in the late 1990’s and early 2000's often found themselves in an inconvenient situation with limited options. These included building up this functionality mostly from scratch, wrestling with interfaces to numerical Fortran libraries such as BLAS and LAPACK, or somehow convincing management to invest in a third-party commercial C++ linear algebra library.

The situation has improved substantially over the years with the development of several well-regarded open-source linear algebra libraries for C++. One in particular that has become popular, first released in 2006, is the Eigen library. It has been adopted for use within both the TensorFlow machine learning library and the Stan Math Library, as well as at CERN, and it can also be found in the implementation of high-performance quantitative trading strategies in C++.

In this talk, we will examine the setup and basics of the Eigen library, followed by a discussion of some of its more advanced features, including applications of matrix decompositions frequently used in quantitative work, as well as its compatibility with STL algorithms. It will conclude with an overview of how it can be used within the context of the C++26 BLAS interface proposal (P1673), via an interface with std::mdspan now available in C++23.

CppCon 2024 Amortized O(1) Complexity in C++ -- Andreas Weis

By Blog Staff | Jun 16, 2025 01:14 PM | Tags: None

Lightning Talk: Amortized O(1) Complexity in C++

by Andreas Weis

Summary of the talk:

We will take a quick look at how amortized analysis for algorithms works. We will use two examples from the standard library to demonstrate this and show how in one place, the standard's interpretation of amortized constant complexity is at odds with the usual use of the term.

CppCon 2024 Using PMR in C++ Embedded Systems for Functional Safety -- Scott Dixon

By Blog Staff | Jun 14, 2025 01:11 PM | Tags: None

Lightning Talk: Using PMR in C++ Embedded Systems for Functional Safety

by Scott Dixon

Summary of the talk:

Dynamic memory is often disallowed in high-assurance, c++ embedded systems but, when examining the reasons why, C++17 Polymorphic Memory Resources emerge as an unexpected solution to enable the use of C++ standard library constructs for such projects. My talk will explore how PMR can be used to meet functional safety requirements and to build embedded systems that are robust, performant, and testable.

CppCon 2024 Back to Basics: Unit Testing in C++ -- Dave Steffen

By Blog Staff | Jun 12, 2025 01:08 PM | Tags: None

Back to Basics: Unit Testing in C++

by Dave Steffen

Summary of the talk:

Unit Testing is a big, complicated subject. With good advice coming in from books, conference talks, and blog posts beyond count, it's a daunting topic even for experienced developers. Can we make the subject more approachable?

Yes we can. If we look a little deeper, there are some fundamental principles behind the advice. Further, these principles seem to belong to a small number of "domains", each addressing a very different aspect of unit testing and software development.

For example, "Test error conditions separately", "Tests should be easy to read", and "Write the unit tests first" are all great advice, but each is aiming for a very different goal.

In this talk, we'll survey these domains of unit testing practice, identify some of the basic practices involved in each, and put the larger discussion of unit testing into a more useful context. We will also see how some unit testing practices enhance or conflict with others, and how these controversies reveal deep philosophical questions that have real consequences for how we go about the day-to-day activity of testing our code.

CppCon 2024 The Main Points in C++ - Dots in C++ -- Miodrag Misha Djukic

By Blog Staff | Jun 10, 2025 01:04 PM | Tags: None

Lightning Talk: The Main Points in C++ - Dots in C++

by Miodrag Misha Djukic

Summary of the talk:

A simple element of punctuation marks -- a point (dot) -- but used for so much. What are the all the ways a point is used in C++? Can you list them all? One point (dot), two points (colon), three points (ellipsis), four points (double colon). Let’s quickly go over all the usages: a well known ones, but also some that are encountered not so often.