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June 2015

CppCon 2014 Parallelizing the Standard Algorithms Library--Jared Hoberock

By Adrien Hamelin | Jun 24, 2015 08:00 AM | Tags: performance experimental

Have you registered for CppCon 2015 in September? Don’t delay – Early Bird registration is open now.

While we wait for this year’s event, we’re featuring videos of some of the 100+ talks from CppCon 2014 for you to enjoy. Here is today’s feature:

Parallelizing the Standard Algorithms Library

by Jared Hoberock

(watch on YouTube) (watch on Channel 9)

Summary of the talk:

Until recently, C++ programmers building parallel programs found little support for parallelism in the standard toolbox. That's changing with the technical specification on Extensions for Parallelism in C++. This talk will explore how programmers can build portable parallel programs from high-level parallel algorithms which can execute on CPU threads, vector units, and even GPUs.

The Four Polymorphisms in C++ -- Peteris Krumins

By Niks | Jun 24, 2015 04:39 AM | Tags: basics

C++ has more than one ways to express polymorphism. Discover the nomenclature and read examples on all of them in the following article :

The Four Polymorphisms in C++

by Peteris Krumins

From the article:

(...) These polymorphisms also go by different names in C++ :

  • Subtype polymorphism is also known as runtime polymorphism.
  • Parametric polymorphism is also known as compile-time polymorphism.
  • Ad-hoc polymorphism is also known as overloading.
  • Coercion is also known as (implicit or explicit) casting.

CppCon 2014 The Implementation of Value Types--Lawrence Crowl

By Adrien Hamelin | Jun 22, 2015 08:00 AM | Tags: efficiency advanced

Have you registered for CppCon 2015 in September? Don’t delay – Early Bird registration is open now.

While we wait for this year’s event, we’re featuring videos of some of the 100+ talks from CppCon 2014 for you to enjoy. Here is today’s feature:

The Implementation of Value Types

by Lawrence Crowl

(watch on YouTube) (watch on Channel 9)

Summary of the talk:

Predefined value types are central to C++ efficiency and robustness. More importantly, C++ provides mechanisms that enable programmers to create high-quality value types, programmers are not limited to the small predefined value types. However, implementing a high-quality type requires attention to several problems, among them portability, representation, efficient copying, efficient parameters, aliasing, constant initialization, and constant expressions. We present the issues and several approaches to implementing high-quality value types.

CppCon 2014 Multiplatform C++--Edouard Alligand

By Adrien Hamelin | Jun 19, 2015 08:00 AM | Tags: advanced

Have you registered for CppCon 2015 in September? Don’t delay – Early Bird registration is open now.

While we wait for this year’s event, we’re featuring videos of some of the 100+ talks from CppCon 2014 for you to enjoy. Here is today’s feature:

Multiplatform C++

by Edouard Alligand

(watch on YouTube) (watch on Channel 9)

Summary of the talk:

C++ is a multiplatform language, yet many difficulties arise when you want the same code to compile properly and function identically on different platforms. If you put aside the obvious system programming related obstacles, and the differences you might have between compilers (especially when it comes to supporting C++11 and C++14), you come to the surprising conclusion that what is truly hard is all the "little things" you didn't anticipate.

This talk will be about our experience with our own software, quasardb, that runs every day on three OS (FreeBSD, Linux and Windows), is built with three compilers (clang, gcc and msvc) and supports two architectures (IA32 and AMD64).

How to build natively the same software on Windows and Linux, provided that they have radically different tool chains? How to work around the subtle, but existing differences between Linux and FreeBSD? How do you solve cross-tools, cross-platform file editing problems? How to prevent your maintenance costs from increasing dramatically?

Safety: off - How not to shoot yourself in the foot with C++ atomics -- Anthony Williams

By Mantosh Kumar | Jun 17, 2015 10:20 PM | Tags: c++11 advanced

Guidelines for how to use C++ atomics safely in our code using worked examples.

Slides and code and for my ACCU 2015 presentation

by Anthony Williams

From the article:

It's now two months since the ACCU 2015 conference in Bristol, UK, so I thought it was about time I posted my slides.

This year my presentation was titled "Safety: off - How not to shoot yourself in the foot with C++ atomics". I gave a brief introduction to the C++ atomics facilities, some worked examples of usage, and guidelines for how to use atomics safely in your code.

The slides are available here, and the code examples here.

Standardizing Variant: Difficult Decisions -- Anthony Williams

By Mantosh Kumar | Jun 17, 2015 10:04 PM | Tags: community advanced

Techincal discussion information while standardizing N4542.

Standardizing Variant: Difficult Decisions

by Anthony Williams

From the article:

One of the papers proposed for the next version of the C++ Standard is N4542: Variant: a type safe union (v4). As you might guess from the (v4) in the title, this paper has been discussed several times by the committee, and revised in the light of discussions.

Boost has had a variant type for a long time, so it only seems natural to standardize it. However, there are a couple of design decisions made for boost::variant which members of the committee were uncomfortable with, so the current paper has a couple of differences from boost::variant. The most notable of these is that boost::variant has a "never empty" guarantee, whereas N4542 proposes a variant that can be empty.

CppCon 2014 Making C++ Code Beautiful--James McNellis & Kate Gregory

By Adrien Hamelin | Jun 17, 2015 08:00 AM | Tags: intermediate c++14

Have you registered for CppCon 2015 in September? Don’t delay – Early Bird registration is open now.

While we wait for this year’s event, we’re featuring videos of some of the 100+ talks from CppCon 2014 for you to enjoy. Here is today’s feature:

Making C++ Code Beautiful

by James McNellis & Kate Gregory

(watch on YouTube) (watch on Channel 9)

Summary of the talk:

Ask a non-C++ developer what they think of C++ and they'll give the language plenty of compliments: powerful, fast, flexible, and "the language for smart people". But along with that you are likely to hear ugly, complicated, hard to read, and "the language for smart people". Is it possible to write beautiful C++? Not arcanely elegant or wickedly compact, but readable, clear, expressive - beautiful! We say it is, and we want to show you how.

In this session, you'll see how to turn pages of "comic book characters swearing" into code you'll be proud to call your own. By making your code express your intent, using the power of new language and library functionality, and leaving hard-to-read constructs out of your vocabulary, you can give your code a makeover that will stand the test of time.

Time To Get Moving! -- Tony DaSilva

By Blog Staff | Jun 16, 2015 12:25 PM | Tags: None

A nice "in a nutshell" about why you should run, not walk, to take advantage of move semantics:

Time To Get Moving!

by Tony DaSilva

From the article:

Starting from C++11 on, we not only get those operations for free for our user-defined types, we also get these turbo-boosters:

  • a “free” move constructor
  • a “free” move assignment operator

In addition, all of the C++ standard library containers have been “move enabled“.

When I first learned how move semantics worked and why this new core language feature dramatically improved program performance over copying, I started wondering about user-defined types that wrapped move-enabled, standard library types. For example,  check out this simple user-defined Msg structure that encapsulates a move-enabled std::vector...

Webinar: A Tour of Modern C++ -- Thursday, July 2nd, 2015

By Blog Staff | Jun 16, 2015 12:15 PM | Tags: c++14 c++11

JetBrains is hosting a free webinar (registration required):

A Tour of Modern C++

Thursday, July 2nd, 2015

14:00 - 15:00 GMT (10:00 AM - 11:00 AM EDT)

The C++ programming language has moved quickly from relative stagnation to rapid evolution, with new versions of the standard adding sought-after features to the language and standard library. In this webinar we shall take a look at the latest language additions introduced in C++11 and will also talk a little bit about some of the forthcoming features in C++14 and 17.

Space is limited, please register now. There will be an opportunity to ask questions during the webinar.

About presenter

Dmitri Nesteruk is a developer, speaker, podcaster and technical evangelist. His interests lie in software development and integration practices in the areas of computation, quantitative finance and algorithmic trading. His technological interests include C#, F# and C++ programming as well high-performance computing using technologies such as CUDA.