By Adrien Hamelin | Apr 17, 2018 12:17 PM | Tags: performance advanced
Optimise or not?
uninitialized_tag in C++
by Marius Elvert
From the article:
No doubt, C++ is one of those languages you can use to squeeze out every last drop of your CPU’s processing power. On the other hand, it also allows a high amount of abstraction. However, micro-optimization seldom works well with nice abstractions...
By Meeting C++ | Apr 17, 2018 06:52 AM | Tags: meetingcpp community
The call for talks for Meeting C++ 2018 is open until June 10th:
Submit your talk to Meeting C++ 2018!
by Jens Weller
From the article:
This year its the 7th edition of Meeting C++, the 2nd time that it spans 3 days!
Speaking at Meeting C++ is a fun experience, you get to attend the speakers dinner, attend the full conference for free and enjoy the luxurious Hotelrooms the Andels offers from Wednesday to Saturday! You can look at last years schedule to get a feel for what your competition might talk about, but have in mind that you don't see the talks that were not submitted! If you want to talk about a C++ topic that wasn't covered yet, or have a unique idea for your talk, please submit!
Start speaking!
Meeting C++ encourages you to start speaking about C++, as we all like to hear more and different voices and opinions on the wide range that C++ has become since C++11. Thats why Meeting C++ has a track that is dedicated to new speakers! If this is of interest to you, please read Jon Kalbs blog post on Developing Talk Ideas, additional information on speaking and slide design is available in the speaking guidelines of Meeting C++! You'll find help with your talk in the C++ slack under #speakerscorner.
Also you can submit talks on embedded to Meeting Embedded 2018!
By xxvms | Apr 17, 2018 05:31 AM | Tags: None
Free C++ course starting 1st May 2018.
by CppLondonUni
About the course:
This is free course, aimed at beginners and intermediate users. Our syllabus is based on Programming: Principles and Practice Using C++, 2nd Edition.
Who can benefit from this course:
1. People who have no experience with coding
2. People that come from different languages such as Java, Python, C# etc
3. Developers that would like to refresh their C++ knowledge
Location:
London and Online
London - CodeNode 10 South Pl, London EC2M 7EB
Online - https://goo.gl/BqMCgj (Please RSVP on our host website https:://skillsmatter.com
When:
Every Tuesday
London - from 18:15 GMT
Online - from 18:30 GMT or soon after
By Adrien Hamelin | Apr 16, 2018 01:00 PM | Tags: c++17 advanced
The power of C++17.
C++17: The two line visitor explained
by Marius Elvert
From the article:
If you have ever used an “idiomatic” C++ variant datatype like Boost.Variant or the new C++17 std::variant, you probably wished you could assemble a visitor to dispatch on the type by assembling a couple of lambda expressions like this:
auto my_visitor = visitor{ [&](int value) { /* ... */ }, [&](std::string const& value) { /* ... */ }, };
By Adrien Hamelin | Apr 16, 2018 12:51 PM | Tags: intermediate
More on the STL.
Moving Ranges Around with STL Algorithms
by Jonathan Boccara
From the article:
We’ve seen various ways to achieve complex operations on ranges with STL algorithms along the posts of the STL Learning Resource.
Let’s now see how to just move collections around. A much simpler topic…
…or is it?
By Adrien Hamelin | Apr 16, 2018 12:46 PM | Tags: advanced
Quick A: The behaviour will likely stay the same.
Recently on SO:
With “-fno-exceptions”, what happens with “new T”?
The way I understand it, operator new is defined by libstdc++. If you now compile your own code with -fno-exceptions, you cannot catch any exceptions, but you will still be linking against the normal version of libstdc++, which does throw an exception.
So yes, new T will throw an exception, even with -fno-exception.
However, if you compiled libstdc++ with -fno-exception as well, things become different. Now, new T cannot throw an exception but, if I read the libstdc++ manual right it will call abort() instead.
It seems that, if you want your new T to return NULL on failure, the only way is to explicitely specify nothrow...
By Blog Staff | Apr 16, 2018 10:38 AM | Tags: None
Boost 1.67 is now available:
Boost Version 1.67.0
There are two new libraries:
Also, many updated libraries have been updated. See the announcement for details.
By robwirving | Apr 13, 2018 05:15 PM | Tags: None
Episode 145 of CppCast the only podcast for C++ developers by C++ developers. In this episode Rob and Jason are joined by Bartłomiej Filipek to discuss blogging, Simplifying C++ Code with C++17, and the work he's doing at Xara.
CppCast Episode 145: Blogging and Text Processing with Bartłomiej Filipek
by Rob Irving and Jason Turner
About the interviewee:
Bartłomiej Filipek (Bartek as a shorter version) is a C++ software developer at Xara where he works mostly on text features for advanced document editors. He works remotely from Cracow/Poland. Apart from graphics applications, Bartek also has experience with game development, large-scale systems for aviation, writing graphics drivers and even biofeedback. For seven years Bartek has been regularly blogging. In the early days the topic revolved around graphics programming, and now he focuses on Core C++. In his spare time, he loves assembling trains and Lego with his little son. And he's a collector of large Lego Star Wars models.
By Adrien Hamelin | Apr 12, 2018 10:29 AM | Tags: intermediate
It's all about expressiveness.
Tailor Standard Containers to Your Needs
by Arne Mertz
From the article:
We often use standard containers as members of our classes. In a lot of cases, the semantics we actually need is not equivalent to the semantics the containers provide...
By Adrien Hamelin | Apr 12, 2018 10:24 AM | Tags: intermediate
Depends!
Which One Is Better: Map of Vectors, or Multimap?
by Jonathan Boccara
From the article:
While advising on how to make code more expressive on the SFME project, I came across an interesting case of choosing the right data structure, which I’ll share with you with the permission of the authors of the projects.
We had to associate a key with several values, and perform various operations. Should we use a map of vectors, or is a multimap more appropriate? Let’s see the case in more details, and compare the two solutions...