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Design by contract

C++ Core Guidelines: A Short Detour to Contracts in C++20

July 20, 2018

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My original plan was it to write in this post about the next rules to error handling. But I changed my…

technology 2025795 1280

The End of my Detour: Unified Futures

June 15, 2018

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After the last post to executors, I can finally write about the unified futures. I write in the post…

timeline20 23

A Short Detour: Executors

June 8, 2018

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A few weeks ago, one of the authors of the proposal to the futures in C++ Felix Petriconi wrote me an…

memory

No New New: Raw Pointers Removed from C++

March 26, 2018

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Two weeks ago, the ISO C++ standard meeting took place in Jacksonville. Today I want to make a…

conceptsIntegralVariations

Placeholders – The Second

March 11, 2017

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The unification of templates, concepts, and placeholders goes on. This time, I will look closely at constrained…

ForkJoin

Task Blocks

March 3, 2017

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Task blocks use the well-known fork-join paradigm for the parallel execution of tasks. Who invented…

synchronized

Transactional Memory

March 1, 2017

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Transactional memory is based on the idea of a transaction from the database theory. Transactional memory…

optional

std::future Extensions

February 24, 2017

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Tasks in the form of promises and futures have in C++11 an ambivalent reputation. On the one hand, they…

timelineCpp17andCpp20

Multithreading with C++17 and C++20

February 16, 2017

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Forecasts about the future are difficult. In particular, when they are about C++20. Nevertheless, I will…

optional

Monads in C++

February 10, 2017

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Monads in C++? What a strange name for a post. But it's not so strange. With std::optional, C++17 gets…

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 […]