In this blog post, we will explore handling dates using std::chrono, including time zones. We’ll utilize the latest features of the library to retrieve the current time across various time zones, taking into account daylight saving time changes as well. Additionally, we will incorporate new capabilities introduced in C++23, such as enhanced printing functions and more.

With the introduction of C++17, the C++ Standard Library expanded its capabilities for converting text to numbers with the addition of std::from_chars. This low-level, high-performance API offers significant advantages over previous methods, such as atoi and stringstream. In this article, we will explore the evolution of string conversion routines from C++17 through C++26, highlighting key improvements like constexpr support and enhanced error handling.

In this article, you’ll learn why std::initializer_list has a bad reputation in C++. Is passing values using it as efficient as “emplace”? How can we use non-copyable types? You’ll also see how to fix some of the problems. Let’s start with the issues first: Updated in Sept 2024: Added note about stack overflow and C++26 fixes.

Imagine you’re developing a tool that needs to scan for file changes across thousands of project files. Retrieving file attributes efficiently becomes critical for such scenarios. In this article, I’ll demonstrate a technique to get file attributes that can achieve a surprising speedup of over 50+ times compared to standard Windows methods.

The evolution of the C++ language continues to bring powerful features that enhance code safety, readability, and maintainability. Among these improvements, we got changes and additions to enum class functionalities across C++17, C++20, and C++23. In this blog post, we’ll explore these advancements, focusing on initialization improvements in C++17, the introduction of the using enum keyword in C++20, and the std::to_underlying utility in C++23.

Working with the filesystem can be a daunting task, but it doesn’t have to be. In this post, I’ll walk you through some of the most common filesystem operations using the powerful features introduced in C++17, as well as some new enhancements in C++20/23. Whether you’re creating directories, copying files, or managing permissions, these examples will help you understand and efficiently utilize the std::filesystem library.

In this blog post, we’ll examine the potentially simple task of getting and displaying file time. Usually, we can depend on some library or OS-specific code to get that file property. Fortunately, since C++20, we have a reliable and simple technique from the std::filesystem and std::chrono components. Let’s jump in.

Although C++ is an old programming language, its Standard Library misses a few basic things. Features that Java or .NET had for years were/are not available in STL. With C++17 there’s a nice improvement: for example, we now have the standard filesystem! Traversing a path, even recursively, is so simple now!

In this blog post, we’ll show how to implement a custom pipe operator and apply it to a data processing example. Thanks to C++23 and std::expectedwe can write a rather efficient framework that easily handles unexpected outcomes. This is a collaborative guest post by prof. Bogusław Cyganek: Prof. Cyganek is a researcher and lecturer at the Department of Electronics, AGH University of Science and Technology in Cracow, Poland.

std::expected from C++23 not only serves as an error-handling mechanism but also introduces functional programming paradigms into the language. In this blog post, we’ll have a look at functional/monadic extensions of std::expected, which allow us to chain operations elegantly, handling errors at the same time. The techniques are very similar to std::optional extensions - see How to Use Monadic Operations for `std::optional` in C++23 - C++ Stories.

In the article about std::expected, I introduced the type and showed some basic examples, and in this text, you’ll learn how it is implemented. A simple idea with struct   In short, std::expected should contain two data members: the actual expected value and the unexpected error object. So, in theory, we could use a simple structure:

In this article, we’ll go through a new vocabulary type introduced in C++23. std::expected is a type specifically designed to return results from a function, along with the extra error information. Motivation   Imagine you’re expecting a certain result from a function, but oops… things don’t always go as planned: