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CppCast Episode 159: Design Patterns in Modern C++ with Dmitri Nesteruk

By robwirving | Jul 20, 2018 08:38 AM | Tags: None

Episode 159 of CppCast the only podcast for C++ developers by C++ developers. In this episode Rob and Jason are joined by Dmitri Nesteruk to discuss Design Patterns with Modern C++.

CppCast Episode 159: Design Patterns in Modern C++ with Dmitri Nesteruk

by Rob Irving and Jason Turner

About the interviewee:

Dmitri Nesteruk is a quantitative analyst, developer, course and book author, and an occasional conference speaker. His interests lie in software development and integration practices in the areas of computation, quantitative finance and algorithmic trading. His technological interests include C# and C++ programming as well high-performance computing using technologies such as CUDA and FPGAs.

CppCon 2017: Undefined Behaviour is awesome!--Piotr Padlewski

By Adrien Hamelin | Jul 18, 2018 09:06 AM | Tags: community

Have you registered for CppCon 2018 in September? Registration is open now.

While we wait for this year’s event, we’re featuring videos of some of the 100+ talks from CppCon 2017 for you to enjoy. Here is today’s feature:

Undefined Behaviour is awesome!

by Piotr Padlewski

(watch on YouTube) (watch on Channel 9)

Summary of the talk:

Undefined behavior (UB) is one of the features of C++ that is both loved and hated. Every C++ developer cares about performance, which is why it is very important to understand what the compiler can optimize and what are the language guarantees. Many times programmers are too optimistic about what the compiler can optimize, or they waste time optimizing code by hand.

In this talk you will learn:
- what is the “as-if” rule
- why compilers know less than the programmer — the main problem with Translation Units
- why compilers optimize based on UB, but don't warn about it
- why Undefined Behavior can transcend time, removing your whole code without running 88mph
- why having a more constrained language is better — optimizations that you can’t do in C

CppCon 2017: Seventeenification: Porting sqlpp11 to C++17--Roland Bock

By Adrien Hamelin | Jul 16, 2018 09:32 AM | Tags: community

Have you registered for CppCon 2018 in September? Registration is open now.

While we wait for this year’s event, we’re featuring videos of some of the 100+ talks from CppCon 2017 for you to enjoy. Here is today’s feature:

Seventeenification: Porting sqlpp11 to C++17

by Roland Bock

(watch on YouTube) (watch on Channel 9)

Summary of the talk:

The ink on C++17 has merely dried, but the major compilers support most features already. It's high time for a reality check!

This talk is a report about the ongoing effort of porting sqlpp11 to C++17. I'll show real-world usage of the following features:

Core:
inline variables
auto non-type template parameters
[[nodiscard]]
class template deduction
constexpr if
fold expressions

Library:
string_view
optional

This talk also comes with a realization about C++11.

CopperSpice: C++ in review

By Ansel Sermersheim | Jul 14, 2018 06:38 AM | Tags: None

New video on the CopperSpice YouTube Channel:

C++ in review

by Barbara Geller and Ansel Sermersheim

About the video:

This video marks the one year anniversary of the CopperSpice YouTube channel. In this video we answer questions we have received, talk about a few corrections to our past videos, and also show new examples. One of the examples about overload resolution, is a bit bizarre and well worth checking out.

Please take a look and remember to subscribe!

CppCast Episode 158: Future of 2D Graphics Proposal with Guy Davidson

By robwirving | Jul 13, 2018 07:02 AM | Tags: None

Episode 158 of CppCast the only podcast for C++ developers by C++ developers. In this episode Rob and Jason are joined by Guy Davidson from Creative Assembly to discuss the future of the 2D Graphics proposal after the C++ meeting in Rapperswil.

CppCast Episode 158: Future of 2D Graphics Proposal with Guy Davidson

by Rob Irving and Jason Turner

About the interviewee:

Guy Davidson is the Coding Manager of Creative Assembly, makers of the Total War franchise, Alien: Isolation and Halo Wars 2, Guy has been writing games since the early 1980s. He is now also a contributor to SG14, the study group devoted to low latency, real time requirements, and performance/efficiency especially for Games, Financial/Banking, and Simulations. He speaks at schools, colleges and universities about programming and likes to help good programmers become better programmers.

CppCon 2017: Delegate this! Designing with delegates in modern C++--Alfred Bratterud

By Adrien Hamelin | Jul 11, 2018 01:23 PM | Tags: performance community

Have you registered for CppCon 2018 in September? Registration is open now.

While we wait for this year’s event, we’re featuring videos of some of the 100+ talks from CppCon 2017 for you to enjoy. Here is today’s feature:

Delegate this! Designing with delegates in modern C++

by Alfred Bratterud

(watch on YouTube) (watch on Channel 9)

Summary of the talk:

Designing a fast IP stack from scratch is hard. Using delegates made it all easier for IncludeOS, the open source library operating system written from scratch in modern C++. Our header-only delegates are just as fast as C-style function pointers, compatible with std::function, and allows any object to delegate work to stateful member functions without knowing anything about the class they belong to. We use delegates for everything from routing packets to creating REST endpoints, and most importantly to tie the whole IP stack together. In this talk we’ll show you how we use delegates in IncludeOS, discuss pitfalls and alternatives, and give you all you need to get started.

CppCon 2017: Coroutines: what can't they do?--Toby Allsopp

By Adrien Hamelin | Jul 9, 2018 01:26 PM | Tags: performance community

Have you registered for CppCon 2018 in September? Registration is open now.

While we wait for this year’s event, we’re featuring videos of some of the 100+ talks from CppCon 2017 for you to enjoy. Here is today’s feature:

Coroutines: what can't they do?

by Toby Allsopp

(watch on YouTube) (watch on Channel 9)

Summary of the talk:

Coroutines are coming. They're coming for your asynchronous operations. They're coming for your lazy generators. This much we know. But once they're here, will they be satisfied with these offerings? They will not. They will require feeding, lest they devour our very souls. We present some fun ways to keep their incessant hunger at bay. I, for one, welcome our new coroutine overlords.

The Coroutines Technical Specification is an experimental extension to the C++ language that allows functions to be suspended and resumed, with the primary aim of simplifying code that invokes asynchronous operations. We present a short introduction to Coroutines followed by some possibly non-obvious ways they can help to simplify your code.

Have you ever wanted to elegantly compose operations that might fail? Coroutines can help. Have you ever wished for a zero-overhead type-erased function wrapper? Coroutines can help. We show you how and more.

CopperSpice: Special Member Functions

By Ansel Sermersheim | Jul 5, 2018 07:18 AM | Tags: None

New video on the CopperSpice YouTube Channel:

Special Member Functions

by Barbara Geller and Ansel Sermersheim

About the video:

This video discusses special member functions in C++. We examine what they are, how they work, and some operations which seem like they would be special member functions but are not. We also briefly discuss the spaceship operator, coming in C++20, and the implications it has for the list of special member functions.

Please take a look and remember to subscribe!

CppCon 2017: Agent based class design--Odin Holmes

By Adrien Hamelin | Jul 4, 2018 01:09 PM | Tags: community

Have you registered for CppCon 2018 in September? 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 2017 for you to enjoy. Here is today’s feature:

Agent based class design

by Odin Holmes

(watch on YouTube) (watch on Channel 9)

Summary of the talk:

Abstracting a set of functionalities into a class which provides a higher level interface often requires tough design decisions. Users who do not have the exact requirements for which the abstraction is optimized will suffer a syntactic or run time overhead as a result. Alexandrescu's famous "policy-based design" provides a mechanism to allow the user to extend and customize an existing abstraction in order to fine-tune its functionality for many different use cases. This is however limited to use cases where each policy more or less represents a compile time strategy pattern.

Alas, not everything is a strategy pattern. In this talk I will explore the viability of a more agent-pattern-like paradigm where each policy knows its requirements and publishes its capabilities. In this paradigm, glue code connecting any valid set of policies is automatically generated using template metaprogramming. This allows much more powerful customizations while maintaining static linkage.