June 16-21, Sofia, Bulgaria
September 13-19, Aurora, CO, USA
October 25, Pavia, Italy
November 6-8, Berlin, Germany
November 16-21, Kona, HI, USA
By Meeting C++ | Jun 2, 2017 06:05 AM | Tags: user groups community
The monthly posting on upcoming C++ User Group Meetings:
C++ User Group meetings in June
by Jens Weller
From the article:
Again, in Summer time, many C++ User Groups meet to share an evening full of C++ with their local community! ...
By Adrien Hamelin | May 25, 2017 11:37 AM | Tags: community
Did you ever use them?
C++ Online Compilers
by Arne Mertz
From the article:
Online compilers can be useful tools to quickly compile a snippet of code without having to install a proper compiler on our computer. They can be especially useful to play with the newest language features, to share code snippets online or to compare different compilers...
By Adrien Hamelin | May 25, 2017 11:30 AM | Tags: performance c++14
How to do a pool?
A self-contained Pool in C++14
by Jens Weller
From the article:
During C++Now I started writing a small application, that plays around with dlibs face recognition features. More on this later, the program uses the QThreadPool, and some researched showed that calling dlib::get_frontal_face_detector() is a very expensive operation. So I decided to write a thread safe pool to share the face detection object between threads, only loading as many as needed. The main thread owns the pool which owns the detection objects...
By TartanLlama | May 24, 2017 01:13 PM | Tags: performance
A post on writing GPGPU code in C++ using the SYCL standard from the Khronos group.
Accelerating your C++ on GPU with SYCL
By Simon Brand
From the article:
Leveraging the power of graphics cards for compute applications is all the rage right now in fields such as machine learning, computer vision and high-performance computing. Technologies like OpenCL expose this power through a hardware-independent programming model, allowing you to write code which abstracts over different architecture capabilities. The dream of this is “write once, run anywhere”, be it an Intel CPU, AMD discrete GPU, DSP, etc. Unfortunately, for everyday programmers, OpenCL has something of a steep learning curve; a simple Hello World program can be a hundred or so lines of pretty ugly-looking code. However, to ease this pain, the Khronos group have developed a new standard called SYCL, which is a C++ abstraction layer on top of OpenCL. Using SYCL, you can develop these general-purpose GPU (GPGPU) applications in clean, modern C++ without most of the faff associated with OpenCL.
By Adrien Hamelin | May 23, 2017 09:23 AM | Tags: experimental community
Trip report!
C++Now 2017
by Michael Park
From the article:
I just returned from C++Now 2017 in Aspen, CO. This was my second time attending the conference and it was just as amazing as last year. My girlfriend decided to come along this time, since Aspen is such a beautiful place. We flew into Denver, rented a car and took the beautiful 4-hour drive into Aspen. She was very happy ��. Strongly recommended...
By Adrien Hamelin | May 23, 2017 09:17 AM | Tags: performance advanced
Complicated stuff, interesting also!
A question about avoiding page faults the first time newly-allocated memory is accessed
by Raymond Chen
From the article:
A customer had a question about memory allocation...
By Adrien Hamelin | May 19, 2017 11:35 AM | Tags: advanced
Curious things!
What the Curiously Recurring Template Pattern can bring to your code
by Jonathan Boccara
From the article:
After having defined the basics on the CRTP in episode #1 of the series, let’s now consider how the CRTP can be helpful in day-to-day code...
By Andrzej Krzemienski | May 18, 2017 07:34 AM | Tags: basics
Every C++ programmer should see a bug like this, from Matthew Wilson's post. As a warning.
Important semantic effects of small syntax errors
by Matt Wilson
By Adrien Hamelin | May 16, 2017 12:38 PM | Tags: intermediate c++11
Quick A: In C++11 it's required to be constant time.
Recently on SO:
Is list::size() really O(n)?
In C++11 it is required that for any standard container the
.size()operation must be complete in "constant" complexity (O(1)). (Table 96 — Container requirements). Previously in C++03.size()should have constant complexity, but is not required (see Isstd::string size()a O(1) operation?).The change in standard is introduced by n2923: Specifying the complexity of size() (Revision 1).
By bfilipek | May 12, 2017 11:42 AM | Tags: performance
Can you pack 8 bools into one BYTE efficiently?
Packing Bools, Performance tests
by Bartlomiej Filipek
From the article:
The simple problem of packing seems to show a lot of performance issues. If the packing is really needed? Can we make the code parallel? What are the branching effects here?