October 25, Pavia, Italy
November 6-8, Berlin, Germany
November 3-8, Kona, HI, USA
By Adrien Hamelin | Jul 19, 2017 12:17 PM | Tags: intermediate c++11
The stl can help you!
Your own error code
by Andrzej Krzemieński
From the article:
I was recently implementing the “classification of error conditions” in my application offered by the functionality behind
std::error_code. In this post I want to share some of my experience and insight.
By Adrien Hamelin | Jul 10, 2017 12:14 PM | Tags: intermediate c++11
Quick A: Create member functions begin() and end() returning an iterator.
Recently on SO:
How to make my custom type to work with “range-based for loops”?
The standard has been changed since the question (and most answers) were posted in the resolution of this defect report.
The way to make a
for(:)loop work on your type X is now one of two ways:
- Create member
X::begin()andX::end()that return something that acts like an iterator- Create a free function
begin(X&)andend(X&)that return something that acts like an iterator, in the same namespace as your type X.And similar for const variations. This will work both on compilers that implement the defect report changes, and compilers that do not.
By Adrien Hamelin | Jul 10, 2017 12:04 PM | Tags: stl intermediate
Have you registered for CppCon 2017 in September? Don’t delay – Registration is open now.
While we wait for this year’s event, we’re featuring videos of some of the 100+ talks from CppCon 2016 for you to enjoy. Here is today’s feature:
std::accumulate: Exploring an Algorithmic Empire
by Ben Deane
Summary of the talk:
What is the most powerful algorithm in the STL? In the world? There are many cases to be made. But this talk explores what I think is a pretty good candidate, which C++ calls std::accumulate(). Tucked away in ＜numeric＞, perhaps relatively unregarded when compared with workhorses like std::find_if() and std::partition(); nevertheless, std::accumulate() is in some sense the ur-algorithm on sequences.
Let’s explore the result of looking at code through an accumulate-shaped lens, how tweaking the algorithm for better composability can unlock many more uses, and how it can be further genericized with applications to parallelism, tree structures, and heterogeneous sequences.
std::accumulate(): it’s not just for adding things up!
By Meeting C++ | Jul 6, 2017 08:16 AM | Tags: performance meetingcpp intermediate experimental efficiency community c++14 c++11 boost basics advanced
Meeting C++ exists now for 5 years, lets celebrate on the blog:
5 years of Meeting C++
by Jens Weller
From the article:
Just a little bit more then 5 years ago, Meeting C++ went public. Since then, it has been a wild ride and huge success. Today, Meeting C++ reaches over 50k in social media, the conference it self has grown from 150 to 600 in its 5 editions...
By Adrien Hamelin | Jul 3, 2017 11:03 AM | Tags: intermediate community
Have you registered for CppCon 2017 in September? Don’t delay – Registration is open now.
While we wait for this year’s event, we’re featuring videos of some of the 100+ talks from CppCon 2016 for you to enjoy. Here is today’s feature:
Embracing Standard C++ for the Windows Runtime
by Kenny Kerr & James McNellis
Summary of the talk:
Believe it or not, avoiding language extensions and embracing modern C++ will make it easier for you to write code for Windows. The Universal Windows Platform in Windows 10 provides the ability for developers to write apps for many devices in many languages. To achieve this goal, it uses the Windows Runtime platform technology to expose functionality from the operating system into languages, including C++. Microsoft wants to make the Windows Runtime naturally and easily available to standard C++ developers. "C++/WinRT" (formerly moderncpp.com) is a standard C++ library and toolset currently under development at Microsoft. It includes a standalone compiler, which converts Windows Runtime metadata into a header-only library. The source code uses standard syntax consumable by any C++ compiler, making it easier for developers to use Windows Runtime APIs from C++.
We will begin this session with the goals of the "C++/WinRT" project. We'll look at the primitives of the Windows Runtime ABI and how this C++ library provides a natural projection of those primitives. We'll look at how C++11 and C++14 language features make it easier to encapsulate the COM infrastructure that underpins the Windows Runtime. Finally, we'll look at how we've optimized the implementation and discuss how a handful of compiler optimizations can make this C++ library efficient and effective for building a wide range of applications.
By Meeting C++ | Jul 3, 2017 07:35 AM | Tags: meetingcpp intermediate conference community basics advanced
On Saturday the voting on the program for Meeting C++ 2017 ended, here are the first results:
Meeting C++ 2017 voting results
by Jens Weller
From the article:
Time for a short overview on this years voting for the program of Meeting C++ 2017! Its been awesome to see 206 ppl vote on the 97 submitted talks, a great program is taking shape...
By Adrien Hamelin | Jun 30, 2017 03:03 PM | Tags: intermediate c++17
What's new in C++17?
C++17 in details: Templates
by Bartlomiej Filipek
From the article:
Do you work a lot with templates and meta-programming?
With C++17 we get a few nice improvements: some are quite small, but also there are notable features as well! All in all, the additions should significantly improve writing template code.Today I wrote about:
- Template argument deduction for class templates
- template<auto>
- Fold expressions
- constexpr if
- Plus some smaller, detailed improvements/fixes
BTW: if you’re really brave you can still use concepts! They are merged into GCC so you can play with them even before they are finally published.
By Adrien Hamelin | Jun 26, 2017 12:35 PM | Tags: intermediate c++17
Pretty cool new feature of C++17!
Modern C++ Features – Class Template Argument Deduction
by Arne Mertz
From the article:
With C++17, we get class template argument deduction. It is based on template argument deduction for function templates and allows us to get rid of the need for clumsy make_XXX functions.
By Adrien Hamelin | Jun 26, 2017 12:30 PM | Tags: intermediate
Why and how do we use typename?
Why typename?
by Everything Cpp
From the video:
Whether you've been using C++ for days or years, misunderstanding the usage of 'typename' can observably lead you through the 5 stages of grief. Unfortunately, all too often, 'acceptance' means just throwing the keyword around until the compiler stops correcting you. Good luck should you need to use the 'template' keyword in a similar fashion.
In this video, we explore just what 'typename' is used for, how you can avoid these errors, and the obnoxious exception to the rule that causes people to doubt their understanding.
By Jason Turner | Jun 5, 2017 06:27 AM | Tags: intermediate c++17 c++11
Episode 66 of C++ Weekly.
Variadic fmin in C++11
by Jason Turner
About the show:
This episode demonstrates how fold expressions can be emulated in C++11 by back porting episode 65's C++17 variadic fmin to C++11.