By Adrien Hamelin | Nov 28, 2021 11:45 PM | Tags: performance
Did you know?
C++20: Heterogeneous Lookup in (Un)ordered Containers
by Bartlomiej Filipek
From the article:
Would you like to gain 20…35 or even 50% speed improvements when searching in associative containers? In this blog post, we’ll explore a technique called “heterogenous access” that offers such impressive speedups. We’ll explore ordered containers, and the support for unordered collections added recently in C++20...
By Jens Maurer | Nov 18, 2021 02:04 PM | Tags: c++11 basics
First steps using modern C++
Improving Stability with Modern C++, Part 3 — The
autoKeyword
by Ralph Kootker, FactSet
From the article:
Beginning with C++11,
autotriggers type deduction similar to how templates work. It enables code to be more concise, can improve readability, and in some cases even improve performance.
By Legalize Adulthood | Nov 13, 2021 02:45 AM | Tags: None
Utah C++ Programmers has released a new video.
Audio Programming with Cinder
by Richard Thomson
From the video description:
This Fall we will look into some audio libraries for C++ developers. A couple years ago we took a general look at Cinder. Cinder is a C++ library for programming with aesthetic intent - the sort of development often called creative coding. This includes domains like graphics, audio, video, and computational geometry. Cinder is cross-platform, with official support for macOS, Windows, Linux, iOS, and Windows UWP.
This month, Richard Thomson will give us a more in-depth look at audio programming with Cinder. We'll start with a look at the "voice API", which is suitable for simple audio playback. Next, we'll dive deeper by looking at the "modular API" for more advanced audio processing, including digital signal processing.
By Adrien Hamelin | Nov 12, 2021 01:14 PM | Tags: performance
You should.
Three reasons to pass std::string_view by value
by Arthur O’Dwyer
From the article:
It is idiomatic to pass std::string_view by value. Let’s see why.
First, a little background recap. In C++, everything defaults to pass-by-value; when you say Widget w you actually get a whole new Widget object. But copying big things can be expensive. So we introduce “pass-by-const-reference” as an optimization of “pass-by-value,” and we tell people to pass big and/or expensive things like std::string by const reference instead of by value.
But for small cheap things — int, char*, std::pair<int, int>, std::span<Widget> — we continue to prefer the sensible default behavior of pass-by-value.
Pass-by-value has at least three performance benefits over pass-by-(const)-reference. I’ll illustrate all three of them via string_view...
By Adrien Hamelin | Nov 12, 2021 01:11 PM | Tags: performance
Are you applying them?
Beautiful C++: 30 Core Guidelines for Writing Clean, Safe, and Fast Code
by Kate Gregory
From the article:
It's true! I helped to write a book! Another book! (Do not ask me what this brings the total to, I truly do not know.) This one is about some of the C++ Core Guidelines...
By Loïc Joly | Nov 7, 2021 09:19 PM | Tags: community
The CPPP - an international online C++ Conference from 1-3 December 2021 with a hint of French accent - has published their programme.
CPPP Programme
by CPPP Conference
About the programme
CPPP has now published its program along three tracks:
- Progress: This track is all about the bases. These are the talks that you wish every C++ developer would listen to early in their career to start on the right foot. They can be very valuable to experts but need to be accessible to students and beginners.
- Produce: Talks that can be immediately applied by professional C++ programmers in their everyday job. Concrete tools and pragmatic ideas that work for legacy codebases and scale well with big teams.
- Push Forward: Novel ideas and approaches for C++. They can be patterns that are not well known yet, new features coming in the language, libraries using these recent features or new ways to think about old problems.
You can also already buy your tickets.
By Timur Doumler | Nov 7, 2021 01:32 PM | Tags: community
Timur has noted down his thoughts about the recent CppCon 2021 trip:
Trip Report
by Timur Doumler
About the article
I was on-site and this was actually my first in-person conference since the pandemic started, as well as my first conference in my new role as Developer Advocate at JetBrains. I had an amazing time, a huge thanks to the organisers for pulling this off! See you next year!
By Meeting C++ | Nov 7, 2021 09:46 AM | Tags: meetingcpp community c++20 c++17
What you can learn from being too cute
by Daisy Hollman
Watch the video:
By Adrien Hamelin | Nov 5, 2021 02:44 PM | Tags: intermediate
Are you interested?
Strong Types for Safe Indexing in Collections – Part 2
by Jonathan Boccara
From the article:
In the previous article on strong types, we set out to find how to use strong types for safe indexing in collections.
More precisely, if we have two vectors with two indices to access them, how can we use strong types to make sure we use the right index for the right vector, and that we don’t swap them by mistake?
By Adrien Hamelin | Nov 5, 2021 02:38 PM | Tags: c++20
Will you use one?
A capturing lambda can be a coroutine, but you have to save your captures while you still can
by Raymond Chen
From the article:
We saw some time ago that capturing lambdas which are coroutines result in lifetime issues because the lambda itself returns at the first suspension point, at which point there’s a good chance it will be destructed. After that point, any attempt by the lambda body to access those captured variables is a use-after-free bug...
