By Jon Kalb | Mar 29, 2017 10:40 AM | Tags: variadic templates crtp advanced
Steve Dewhurst has published a new paper under his category Once Weakly:
Variadic CRTP
by Steve Dewhurst
From article:
One problem with [the] traditional application of CRTP is that it’s inflexible.... We can get [more] flexibility by specifying the CRTP capability as a template template parameter.
By Blog Staff | Mar 27, 2017 07:17 PM | Tags: None
A new trip report from the just-concluded ISO C++ meeting:
Trip report: C++ standards meeting in Kona, February 2017
by Botond Ballo
From the article:
ConclusionC++17 is effectively out the door, with its Draft International Standard sent out for ballot, and the official release expected later this year.
Development on C++20 is well under way, with numerous core language and library features already earmarked for it, and several Technical Specifications expected to be merged into it. A proposal for an overall vision for the release aims to focus the committee’s efforts on four headliner features – Concepts, Modules, Ranges, and Networking. That is, of course, not a guarantee these features will be in C++20 (nor is it intended to exclude other features!), but I believe with some luck and continued hard work we can make part of all of that plan a reality.Modules, in particular, are expected to be a game-changer for C++...
By Blog Staff | Mar 24, 2017 05:03 PM | Tags: None
A trip report from the just-concluded ISO C++ meeting:
Trip report: Winter ISO C++ standards meeting (Kona), C++17 is complete
by Herb Sutter
From the article:
C++17 is done!
The big news is that we completed C++17, which dominated the work of the meeting: C++17 is now technically finished and being sent out for its final ISO balloting. All that remains for C++17 now is some ISO red tape and minor touch-up to get it officially published, which is expected to be just mechanical...
By Adrien Hamelin | Mar 20, 2017 01:11 PM | Tags: intermediate experimental
constexpr evolves!
Constexpr Additions in C++17
by Arne Mertz
From the article:
Last year, I have written about constexpr and compile time constants in general. Last week, the Draft International Standard for C++17 has been sent to its ballot. Time to provide some updates to earlier posts!
By Adrien Hamelin | Mar 20, 2017 01:06 PM | Tags: intermediate
What do you think?
Does const mean thread-safe?
by Anthony Williams
From the article:
There was a discussion recently on the cpplang slack about whether const meant thread-safe.
As with everything in life, it depends. In some ways, yes it does. In others, it does not. Read on for the details.
By Marco Arena | Mar 20, 2017 02:02 AM | Tags: intermediate
The use of Singleton is often justified by the will of being able to easily refer to a unique object from any point. Giuseppe Puoti describes an alternative:
Singleton revisited
by Giuseppe Puoti
From the article:
It happens quite often to deal with those annoying objects, used everywhere in your applications. This may be because of a poorly designed application but, sometime, it is simply an inevitable condition...
By Adrien Hamelin | Mar 13, 2017 12:43 PM | Tags: c++11 basics
Do you use it?
C++ Braced Initialization
by Edouard of quasardb
From the article:
Since C++ 11 it's possible to use braces for construction and initialization. Although this is something you could ignore for the code you write, it's obviously important to know for the code you may read.
If you have a couple of years of experience in C++, the temptation can be great to keep your old habits because "All these new features are useless! The language is bloated! Those people in the committee!".
Let's make sense out of the bloat...
By Mark | Mar 9, 2017 11:58 PM | Tags: None
This is Malte's third article on hash table design. His solution shows favorable performance against std::unordered_map, boost::multi_index, google::dense_hash_map, and more. Malte includes intuitive descriptions of why each design decision was made and what tradeoffs might exist. The article also describes some interesting artifacts in the implementations of other hash table implementations.
I Wrote The Fastest Hashtable
by Malte Skarupke
From the article:
There are many types of hashtables. For this one I chose
- Open addressing
- Linear probing
- Robing hood hashing
- Prime number amount of slots (but I provide an option for using powers of two)
- With an upper limit on the probe count
I believe that the last of these points is a new contribution to the world of hashtables. This is the main source of my speed up, [...]
By Meeting C++ | Mar 9, 2017 08:14 AM | Tags: video community
The first episode of Meeting C++ live with Rainer Grimm is going live soon!
by Jens Weller & Rainer Grimm
About the format:
We'll be talking about C++ with a focus on multithreading, covering Rainers examples from his blog!
By Meeting C++ | Mar 2, 2017 07:09 AM | Tags: reflection intermediate experimental c++20 basics advanced
Since the overview on the current papers for Kona, I wanted to know more about reflection...
Reflections on the reflection proposals
by Jens Weller
From the article
A few weeks ago I wrote a short overview over the most interesting papers for the current C++ Committee meeting in Kona, Hawaii. The big surprise was that there were many papers on reflection, while there already is a very detailed proposal for reflection.
With the C++ committee currently in Kona discussing lots of proposals, there will be some changes to the on going effort for reflection, but the current proposals are detailed enough to give an overview.