Archive for category: C++20

TimelineCpp20CoreLanguage

volatile and Other Small Improvements in C++20

August 17, 2020

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Today, I complete my tour through the C++20 core language features with a few small improvements. One…

TimelineCpp20CoreLanguage

New Attributes with C++20

August 13, 2020

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With C++20, we got new and improved attributes such as [[nodiscard("reason")]], [[likely]], [[unlikely]],…

TimelineCpp20CoreLanguage

More Lambda Features with C++20

August 7, 2020

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Lambdas in C++20 can be default-constructed and support copy-assignment when they have no state. Lambdas…

TimelineCpp20CoreLanguage

More Powerful Lambdas with C++20

July 31, 2020

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Thanks to C++20, lambdas have become more powerful. From the various lambda improvements, template parameters…

TimelineCpp20CoreLanguage

Various Template Improvements with C++20

July 24, 2020

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Admittedly, I present in this post a few minor improvements to templates and C++20 in general. Although…

TimelineCpp20

Solving the Static Initialization Order Fiasco with C++20

July 11, 2020

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According to the FAQ of isocpp.org is the static initialization order fiasco "a subtle way to crash…

TimelineCpp20

Two new Keywords in C++20: consteval and constinit

July 9, 2020

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With C++20, we get two new keywords: consteval and constinit. consteval produces a function executed…

TimelineCpp20

Designated Initializers

July 2, 2020

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Designated initialization is an extension of aggregate initialization and empowers you to directly initialize…

TimelineCpp20

C++20: Optimized Comparison with the Spaceship Operator

June 25, 2020

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In this post, I conclude my miniseries on the three-way comparison operator with a few subtle details.…

TimelineCpp20

C++20: More Details to the Spaceship Operator

June 16, 2020

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The compiler performs cleverly when it generates all six comparison operators. Ultimately, you get intuitive…

Latest news

std::execution: SenderDecember 16, 2024 - 11:25 am
std::execution offers three types of senders: factories, adapters, and consumers. I’ll take a closer look at these today. Most of the following content is from proposal P2300R10. I will try to represent it more concisely. Sender Factory A sender factory is an algorithm that takes no senders as parameters and returns a sender. execution::schedule execution::sender […]
std::execution: Composition of SendersDecember 9, 2024 - 10:25 am
Most sender adaptors are composable using the pipe operator. Let me start with a simple example of composition with the pipe operator. Instead of the nested function calls call1(call2(input)) you can write call1 | call2(input) or even: input | call1 | call2 Function composition Okay, this example was straightforward. Let’s do something more complicated. Proposal […]
std::execution: Inclusive ScanDecember 2, 2024 - 10:30 am
Inclusive scan solves problems related to range queries, such as calculating the sum of a range of elements in an array. It is also used in range minimum queries and various other algorithms. Before I present the asynchronous inclusive scan, I introduce the inclusive scan, aka prefix sum. Prefix Sum In computer science, the prefix […]
std::execution: Asynchronous AlgorithmsNovember 25, 2024 - 9:06 am
std::execution supports many asynchronous algorithms for various workflows. Presenting proposal P2300R10 is not easy. First, it is very powerful, and second, it is very long. Therefore, I concentrate on specific aspects of the proposal. What are the priorities of this proposal? Priorities The terms execution resource, execution agent, and scheduler are essential for the understanding […]
std::executionNovember 18, 2024 - 9:03 am
std::execution, previously known as executors or Senders/Receivers, provides “a Standard C++ framework for managing asynchronous execution on generic execution resources“. (P2300R10) Side Note Change of plans. My original plan was to present the C++26 library after the core language. However, the implementation status of the library is not good enough. Therefore, I decided to continue […]
C++26 Core Language: Small ImprovementsNovember 4, 2024 - 8:34 am
There are more small improvements in the C++26 language, which you should know. static_assert extension First, here’s the syntax of static_assert in C++11: static_assert(compile time predicate, unevaluated string) With C++26, the string can be a user-defined type having the following properties: static_assert can now be used with a format string. Here’s a nice example from […]