Archive for category: C++17

Optimization with Allocators in C++17

October 9, 2023

Thanks to polymorphic allocators in C++17, you can optimize your memory allocation. This optimization…

Special Allocators with C++17

October 2, 2023

I introduced in my last post "Polymorphic Allocators with C++17" the theory of polymorphic allocators…

Polymorphic Allocators in C++17

September 25, 2023

This post starts a miniseries about an almost unknown feature in C++17: polymorphic allocators. I often…

C++ Parallel STL Benchmark

August 14, 2023

Today, I'm happy to present a guest post from Victor J. Duvanenko about my favorite C++17 feature: the…

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Performance of the Parallel STL Algorithms

July 22, 2021

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In my last post, "Parallel Algorithms of the STL with the GCC Compiler", I presented the necessary theory…

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Parallel Algorithms of the STL with the GCC Compiler

July 16, 2021

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GCC supports my favorite C++17 feature: the Standard Template Library (STL) parallel algorithms. I recognized…

C++17: Improved Associative Containers and Uniform Container Access

May 7, 2017

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C++11 has eight associative containers. With C++17, you can more comfortably insert new elements into…

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C++17: New Parallel Algorithms of the Standard Template Library

May 1, 2017

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The idea is quite simple. The Standard Template (STL) has more than 100 algorithms for searching, counting,…

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C++17 has a Visitor

April 23, 2017

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What have std::optional, std::any, and std::variant in common? You can construct them in place. But that…

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C++17 – Avoid Copying with std::string_view

April 16, 2017

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The purpose of std::string_view is to avoid copying data already owned by someone else and of which only…

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 […]