Exceptional fun!--Glennan Carnie
Catch them all!
Exceptional fun!
by Glennan Carnie
From the article:
In this article I want to look at some applications for one of C++’s more obscure mechanisms, the function try-block...
Articles & Books
A friendly type predicate--Andrzej KrzemieĊski
To improve the error messages.
A friendly type predicate
by Andrzej Krzemieński
From the article:
This is a sequel to the previous post on writing a custom type predicate. One of the readers on Reddit made a very insightful observation. The user has implemented a type that she intends to use with our library, call it Calc. She passes it to the library function, and she gets the compiler error:
static assertion failed: X does not have a desired interfaceBut what is our type missing? In the previous post we were describing 3 constraints. A concept could have far more of them. The user has already made an effort to have Calc comply with the constraints, so there must be something tiny missing. Maybe there is a bug in the implementation of the predicate? But it is difficult to track what it is that the predicate does not like about our type. We could use some more specific information...
Speeding up the Build of C and C++ Projects
Many programmers know firsthand that C and C++ program builds very long. Someone solves this problem by sword-fighting at build time, someone is going to the kitchen to "grab some coffee". This article is for those who are tired of this, and who decided it is time to do something about it.
Speeding up the Build of C and C++ Projects
by Phillip Khandeliants
From the article:
If your operating system uses ELF format object files (Unix-like systems), you can replace the GNU ld linker with GNU gold. GNU gold comes with binutils starting from the version 2.19, and is activated by the flag -fuse-ld=gold. In CMake it can be activated, for example, by the following code.
Clang 5 in a Docker container for C++17 development--SolarianProgrammer
Very convenient to create a development environment without hassles.
Clang 5 in a Docker container for C++17 development
by SolarianProgrammer
From the article:
If you want to try the new C++17, using Clang in a Docker container, you are in the right place. Running Clang in a container has the advantage that it is light on resources and won’t mess with your underlying OS. The last point is especially important if your host operating system is macOS, on which it is a really bad idea to directly install a binary Clang other than the one that comes with Xcode. I’ve tested the approach presented in this article on Windows 10, macOS High Sierra and Ubuntu Linux.
Overload 142 is now available
ACCU’s Overload journal of December 2017 is out. It contains the following C++ related articles.
Overload 142 is now available
From the journal:
Too Fast! Too slow! Too right!!
Many products over-promise. Frances Buontempo muses on how to get things just right. by Frances Buontempo
CAS (Re)Actor for Non-Blocking Multithreaded Primitives
Lock free programming can be difficult. Sergey Ignatchenko shows how copy and swap can work for reactors. by Sergey Ignatchenko
A Design Example
Design issues cause problems. Charles Tolman considers an organising principle to get to the heart of the matter. by Charles Tolman
The Last Word in Patterns
What can you do in a single transaction in a database? Paul Grenyer writes us his Single CrUD pattern. by Paul Grenyer
Implementing Type-Classes as OCaml Modules
Type classes achieve overloading in functional paradigms. Shayne Fletcher implements some as OCaml modules. by Shayne Fletcher
Evolutionary Computing Frameworks for Optimisation
Evolutionary algorithms can find optimal solutions to problems. Aurora Ramírez and Chris Simons give us an overview. by Aurora Ramírez and Chris Simons
C++17 - The Complete Guide -- Nicolai M. Josuttis
The first draft of "C++17 - The Complete Guide" is now available at
C++17 - The Complete Guide
by Nicolai M. Josuttis
About the guide:
Buy early, pay less, free updates.
This book uses a new publishing model: It is written incrementally and self-published. That way you can buy it even before it is complete and I have income while I am still writing it (note that I do C++ for a living).
Most of the new features are covered already in detail:
- All major new core language features
- The new library components (filesystem only by a few examples)
But there is still enough to do (see http://www.cppstd17.com/ for details).
All covered features went through significant review with awesome feedback and already have a lot of useful details including how they integrate with other features and discussing all the traps you should avoid.
Mixin Classes: The Yang of the CRTP--Jonathan Boccara
Some template tricks.
Mixin Classes: The Yang of the CRTP
by Jonathan Boccara
From the article:
Now that we’re clear on how the CRTP works, let me share with you another technique involving templates that is complementary to the CRTP: Mixin classes. I learnt about mixin classes by watching Arthur O’Dwyer’s Template Normal Programming talk at CppCon (actually you can find them in the slides because they were skipped over during the presentation)...
C++17 Feature Removals And Deprecations--Stephan T. Lavavej
This is about visual studio, but this is also about how the deprecated mechanisms work.
C++17 Feature Removals And Deprecations
by Stephan T. Lavavej
From the article:
Technology advances by inventing new ways of doing things and by discarding old ways. The C++ Standardization Committee is simultaneously adding new features and removing old features at a gradual pace, because we’ve discovered thoroughly better ways of writing code. While feature removals can be annoying, in the sense that programmers need to go change old codebases in order to make them conform to new Standards, they’re also important. Feature removals simplify the Core Language and Standard Library, avoiding the doom of accreting complexity forever. Additionally, removing old features makes it easier to read and write code. C++ will always be a language that offers programmers many ways to write something, but by taking away inferior techniques, it’s easier to choose one of the remaining techniques which are more modern...
C++ Day 2017--Marco Arena
My report on the last C++ event we organized in Italy:
C++ Day 2017
by Marco Arena
From the article:
At the beginning of December, on the 2nd, the Italian C++ Community hosted the C++ Day 2017 and about 110 people gather together...
Summary of C++17 features
Slides from a talk about C++17 features
Summary of C++17 features
by Bartlomiej Filipek
From the article:
How do you see the new C++ standard? Is it ok? Great? Meh? See my slides from the talk where I tried to answer this question.