CppCon 2015 Faster Complex Numbers--André Bergner

By Adrien Hamelin | May 20, 2016 02:39 PM | Tags: performance c++11

Have you registered for CppCon 2016 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 2015 for you to enjoy. Here is today’s feature:

Faster Complex Numbers

by André Bergner

(watch on YouTube) (watch on Channel 9)

Summary of the talk:

Complex numbers are an important tool from mathematics enabling many problems to be written in a more generic form. The C++ standard library comes with an implementation to work with complex numbers in a natural way.

Motivated by useful real world examples from theoretical physics and audio dsp I will discuss benchmarks of std::complex and demonstrate how alternative implementations, naïve or advanced ones based on expression templates, outperform std::complex and can compete with hand-crafted C code (depending on compiler and std lib). A quick introduction to expression templates will be provided.

ACCU 2016 All videos are online

By Felix Petriconi | May 17, 2016 03:11 AM | Tags: None

All videos from the this year's ACCU conference are now online.

ACCU 2016 Videos

by the ACCU

From the schedule

The keynotes were:

Jim Coplien: A Glimpse of Trygve: From Class oriented Programming to Real OO

Andrei Alexandrescu: Fastware

Marian Petre: Balacing Bias in Software Development

Anna-Jayne Metcalfe: Comfort Zone

 

The talks with C++ content in no particular order were:

Dietmar Kühl: Constant Fun

Roger Orr: C++ Concepts 'Lite' in Practice

Felix Petriconi: Leaving The Dark Side - Behaviour Testing of a C++ Based Medical Device

J. Daniel Garcia: Improving Performance and Maintainability in Modern C++

Marshall Clow: STL Algorithms – How to Use Them and How to Write Your Own

Kevlin Henney: Declarative Thinking, Declarative Practice

Dmitri Nesteruk: Design Pattern in Modern C++

Jamie Allsop: Managing C++ Build Complexity Using Cuppa: A SCons-based Build System

Nikos Athanasiou: Benchmarking in C++

Sławomir Zborowski: What Every C++ Programmer Should Know About Modern Compilers

Peter Sommerlad: Visualize Template Instantiations - Understand your Template Bugs

Peter Sommerlad: Using Units, Quantities, and Dimensions in C++14

Niall Douglas: Distributed Mutual Exclusion using Proposed Boost.AFIO

John Lakos: Proper Inheritance Part 1 (Part 2 is not available)

Bernhard Merkle: Finding Bugs with Clang at Compile and Run Time

Guy Davidson: WG21-SG14: The Story So Far

 

C++ Weekly Episode 10: Variadic Expansion Wrap-Up

By Jason Turner | May 16, 2016 11:22 PM | Tags: None

Episode 10 of C++ Weekly.

Variadic Expansion Wrap-Up

by Jason Turner

About the show:

In this episode Jason wraps up what we've learned so far about variadic templates and shows some additional techniques to consider.

CppCon 2015 Expression Templates - Past, Present, Future--Joel Falcou

By Adrien Hamelin | May 16, 2016 01:21 PM | Tags: efficiency advanced

Have you registered for CppCon 2016 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 2015 for you to enjoy. Here is today’s feature:

Expression Templates - Past, Present, Future+

by Joel Falcou

Part 1: (watch on YouTube) (watch on Channel 9)

Part 2: (watch on YouTube) (watch on Channel 9)

Part 3: (watch on YouTube) (watch on Channel 9)

Summary of the talk:

Expression Templates is one of this C++ idiom people learn to either love or hate. The main issues with ET is that everubody has its own conception about what they are, when they should be used, what benefits they give and what are their trade off. For a long time, Expression Tempaltes has been seen has a way to improve temporary heavy code. If the seminal implementation of ET by Todd Veldhuizen was actually about this, the landscape has changed since C++11 and C++14.

This workshop will go over : - what are exactly Expression Templates and what kind of use case they can solve elegantly and efficiently - what are the benefits that one may reap by using expression tempalte in its library - what are the real cost of expressont empaltes both at runtime and compile-time - which tools to use to not reinvent the tempalte wheel everytime including an introduction to Boost.PROTO an Boost.HANA.

The main objective is to clarify why, even in C++1*, this idiom has a meaningful set of applications and how to navigate around its pitfalls.

CppCon 2015 Implementation of a component-based entity system in modern C++--Vittorio Romeo

By Adrien Hamelin | May 13, 2016 02:17 PM | Tags: performance efficiency c++14

Have you registered for CppCon 2016 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 2015 for you to enjoy. Here is today’s feature:

Implementation of a component-based entity system in modern C++

by Vittorio Romeo

(watch on YouTube) (watch on Channel 9)

Summary of the talk:

An alternative to deep inheritance trees for game and application architecture design is "composition". Separating data (in independent components) from logic (in independent systems) allows the code to be more reusable and more efficient, alongside additional benefits. Using modern C++11 and C++14 features, it is possible to design an efficient and user-friendly component-based entity system library, with intuitive syntax and convenient cost-free abstractions.

CppCon 2015 Ranges for the Standard Library--Eric Niebler

By Adrien Hamelin | May 11, 2016 01:03 PM | Tags: intermediate experimental

Have you registered for CppCon 2016 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 2015 for you to enjoy. Here is today’s feature:

Ranges for the Standard Library

by Eric Niebler

(watch on YouTube) (watch on Channel 9)

Summary of the talk:

Range-based interfaces are functional and composable, and lead to code that is correct by construction. With concepts and ranges coming to the STL, big changes are in store for the Standard Library and for the style of idiomatic C++. The effort to redefine the Standard Library is picking up pace. Come hear about one potential future of the STL from one of the key people driving the change.

CppCon 2015 Tuning C++: Benchmarks, and CPUs, and Compilers! Oh My!--Chandler Carruth

By Adrien Hamelin | May 9, 2016 01:24 PM | Tags: performance advanced

Have you registered for CppCon 2016 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 2015 for you to enjoy. Here is today’s feature:

Tuning C++: Benchmarks, and CPUs, and Compilers! Oh My!

by Chandler Carruth

(watch on YouTube) (watch on Channel 9)

Summary of the talk:

A primary use case for C++ is low latency, low overhead, high performance code. But C++ does not give you these things for free, it gives you the tools to control these things and achieve them where needed. How do you realize this potential of the language? How do you tune your C++ code and achieve the necessary performance metrics?

This talk will walk through the process of tuning C++ code from benchmarking to performance analysis. It will focus on small scale performance problems ranging from loop kernels to data structures and algorithms. It will show you how to write benchmarks that effectively measure different aspects of performance even in the face of advanced compiler optimizations and bedeviling modern CPUs. It will also show how to analyze the performance of your benchmark, understand its behavior as well as the CPUs behavior, and use a wide array of tools available to isolate and pinpoint performance problems. The tools and some processor details will be Linux and x86 specific, but the techniques and concepts should be broadly applicable.

C++ Weekly Episode 9: std::future Quick-Start -- Jason Turner

By Jason Turner | May 8, 2016 11:28 PM | Tags: None

Episode 9 of C++ Weekly.

std::future Quick-Start

by Jason Turner

About the show:

In this episode Jason gives a very fast quick-start to what std::future is and how to use std::async to run a function in another thread.

CppCast Episode 56: Conan with Diego Rodriguez-Losada

By robwirving | May 6, 2016 10:50 AM | Tags: None

Episode 56 of CppCast the only podcast for C++ developers by C++ developers. In this episode Rob and Jason are joined by Diego Rodriguez-Losada from Conan to discuss the new C++ Package Manager.

CppCast Episode 56: Conan with Diego Rodriguez-Losada

by Rob Irving and Jason Turner

About the interviewee:

Diego's passions are robotics and SW development. He has developed many years in C and C++ in the Industrial, Robotics and AI fields. He was also a University (tenure track) professor till 2012, when he quit academia to try to build a C/C++ dependency manager, co-founded startup biicode, since then mostly developing in Python. Now he is working as freelance and having fun with conan.io.

CppCon 2015 Better Code: Data Structures--Sean Parent

By Adrien Hamelin | May 5, 2016 11:22 PM | Tags: intermediate efficiency

Have you registered for CppCon 2016 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 2015 for you to enjoy. Here is today’s feature:

Better Code: Data Structures

by Sean Parent

(watch on YouTube) (watch on Channel 9)

Summary of the talk:

The standard library containers are often both misused and underused. Instead of creating new containers, applications are often structured with incidental data structures composed of objects referencing other object. This talk looks at some of the ways the standard containers can be better utilized and how creating (or using non-standard library) containers can greatly simplify code. The goal is no incidental data structures.