By Adrien Hamelin | Jul 10, 2019 12:43 PM | Tags: community
Next step, outputs.
C++ Core Guidelines: Improved Performance with Iostreams
by Rainer Grimm
From the article:
As easy as my title and the rules of the C++ core guidelines sound, getting more performance out of the Iostreams is no no-brainer...
By Adrien Hamelin | Jul 8, 2019 10:42 AM | Tags: intermediate c++11
Quick A: the result is the same as calling the function you're forwarding to directly.
Recently on SO:
Concise explanation of reference collapsing rules requested: (1) A& & -> A& , (2) A& && -> A& , (3) A&& & -> A& , and (4) A&& && -> A&&
The reference collapsing rules (save for A& & -> A&, which is C++98/03) exist for one reason: to allow perfect forwarding to work...
By Adrien Hamelin | Jul 2, 2019 12:41 PM | Tags: community c++14
More safety, maybe more speed.
Use constexpr for faster, smaller, and safer code
by Trail of Bits
From the article:
With the release of C++14, the standards committee strengthened one of the coolest modern features of C++: constexpr. Now, C++ developers can write constant expressions and force their evaluation at compile-time, rather than at every invocation by users. This results in faster execution, smaller executables and, surprisingly, safer code...
By Adrien Hamelin | Jul 2, 2019 12:26 PM | Tags: experimental efficiency
Exited?
Simplify Your Code With Rocket Science: C++20’s Spaceship Operator
by Cameron DaCamara
From the article:
C++20 adds a new operator, affectionately dubbed the “spaceship” operator: <=>. There was a post awhile back by our very own Simon Brand detailing some information regarding this new operator along with some conceptual information about what it is and does. The goal of this post is to explore some concrete applications of this strange new operator and its associated counterpart, the operator== (yes it has been changed, for the better!), all while providing some guidelines for its use in everyday code.
By Adrien Hamelin | Jun 26, 2019 11:31 AM | Tags: advanced
Did you know about them?
The Power of Hidden Friends in C++
by Anthony Williams
From the article:
"Friendship" in C++ is commonly thought of as a means of allowing non-member functions and other classes to access the private data of a class. This might be done to allow symmetric conversions on non-member comparison operators, or allow a factory class exclusive access to the constructor of a class, or any number of things.
However, this is not the only use of friendship in C++, as there is an additional property to declaring a function or function template a friend: the friend function is now available to be found via Argument-Dependent Lookup (ADL). This is what makes operator overloading work with classes in different namespaces...
By Adrien Hamelin | Jun 26, 2019 11:28 AM | Tags: community
One more.
C++ Core Guidelines: Iostreams
by Rainer Grimm
From the article:
When you interact with the outside world, the iostream library is the way to go in C++. As always you have to keep a few rules in mind. Let me show, which rules...
By Adrien Hamelin | Jun 25, 2019 12:43 PM | Tags: community
A nice overview.
C++ 2019 - The state of Developer Ecosystem in 2019 Infographic
by Jet Brains
From the article:
People continue to adopt the new C++ standards. The usage of C++17 has grown by 10 percentage points since last year...
By Adrien Hamelin | Jun 25, 2019 12:40 PM | Tags: community
use the power of C++ in the web.
Pragmatic compiling of C++ to WebAssembly. A Guide.
by Thomas Deniffel
From the article:
Most C++-Programmers I know of have already heard of WebAssembly, but most have had troubles getting started. This guide brings you beyond of a simple “Hello World”: To a stateful-applications with interactions between C++ and JavaScript...
By Adrien Hamelin | Jun 25, 2019 12:26 PM | Tags: c++17
Did you think to use it like that?
Space Game: A std::variant-Based State Machine by Example
by Nikolai Wuttke
From the article:
One of a powerful uses of std::variant is to implement State Machines. Some time ago I showed a simple example, but today we have something bigger. In today’s article by Nikolai Wuttke you’ll see how to leverage std::variant and build a space game!
By Adrien Hamelin | Jun 24, 2019 01:32 PM | Tags: c++11
Still relevant.
In case you missed it: SFINAE and enable_if
by Eli Bendersky
From the article:
There's an interesting issue one has to consider when mixing function overloading with templates in C++. The problem with templates is that they are usually overly inclusive, and when mixed with overloading, the result may be surprising...