I Accidentaly Wrote A Compile-Time Executable State Machine--Philippe M. Groarke

By Adrien Hamelin | Apr 20, 2020 12:14 PM | Tags: c++17 advanced

Compile time magic.

I Accidentaly Wrote A Compile-Time Executable State Machine

by Philippe M. Groarke

From the article:

Yes, you read that title right. While working on a new way to create finite state machines (fsm), I inadvertently designed a state machine you can execute at compile-time. With branching and everything. Today, allow me to pull you down my rabbit hole. It’s always nicer with company down here.

Let’s go, Alice!

Announcing Meeting C++ 2020!

By Meeting C++ | Apr 20, 2020 06:38 AM | Tags: performance meetingcpp intermediate experimental efficiency community c++20 c++17 c++14 c++11 basics advanced

Today I have the honor to give the kick-off for the official planning and participation in Meeting C++2020:

Announcing Meeting C++ 2020

by Jens Weller

From the article:

Meeting C++ returns with its 2020 conference edition! Like in the previous years, we'll be meeting in Berlin from the 12. - 14th November!

With the current situation of COVID-19, planning events for this year is difficult, though I have decided to go ahead and start the preparations for Meeting C++ 2020! I will keep you posted through out 2020 on the changes for this years conference!

CopperSpice: What is the C++ standard library?

By Ansel Sermersheim | Apr 19, 2020 12:25 PM | Tags: None

New video on the CopperSpice YouTube Channel:

What is the C++ Standard Library?

by Barbara Geller and Ansel Sermersheim

About the video:

In this video, we look at what the C++ standard library is, compare it to the STL, and talk about the distinction between the C++ standard library and the C++ core language. We also explore the various standard library implementations, and when you might want to specify one explicitly.

Please take a look and remember to subscribe!

Runtime Polymorphism with std::variant and std::visit -- Bartlomiej Filipek

By bfilipek | Apr 19, 2020 12:24 PM | Tags: None

Read about an interesting way of runtime polymorphism with std::variant/std::visit!

Runtime Polymorphism with std::variant and std::visit

<img alt="" data-cke-saved-src="https://4.bp.blogspot.com/-xp784ADNQ_s/XorA74Xk8rI/AAAAAAAAESM/GFYHPA2a7_4iro82vp1IPBtFdwpLfYAZACLcBGAsYHQ/s1600/varpoly.png" src="https://4.bp.blogspot.com/-xp784ADNQ_s/XorA74Xk8rI/AAAAAAAAESM/GFYHPA2a7_4iro82vp1IPBtFdwpLfYAZACLcBGAsYHQ/s1600/varpoly.png" 200px;="" float:="" right;="" height:="" 64px;"="" style="height: 74px; width: 230px; float: right;">

by Bartlomiej Filipek

From the article:

Runtime polymorphism usually connects with v-tables and virtual functions. However, in this blog post, I’ll show you a modern C++ technique that leverages std::variant and std::visit. This C++17 technique might not only offer better performance and value semantics, but also interesting design patterns.

Making hybrid systems -- Krzysztof Ostrowski

By fj | Apr 19, 2020 12:22 PM | Tags: None

Connecting multiple systems by means of a common denominator.

Making hybrid systems

by Krzysztof Ostrowski

From the article:

In every well-managed software project sooner or later we face cross-system boundaries testing needs, where we basically observe how our software cooperates with the other actors. Those actors include users as well as the other software products. Following article presents an idea of a hybrid system of asynchronous actors running in a heterogeneous environment.

Pure Virtual C++ Conference 2020 (April 30, online)

By Blog Staff | Apr 16, 2020 03:54 PM | Tags: None

Even though most spring C++ events are cancelled, a new one was just announced for the end of this month!

Sign up for Pure Virtual C++ Conference 2020

by Sy Brand

From the post:

Pure Virtual C++ 2020 is a free single-track one-day virtual conference for the whole C++ community. It is taking place on Thursday 30th April 2020 from 14:30 to 23:00 UTC. Sign up on the event website.

All talks will be pre-recorded and streamed on YouTube Live with a live Q&A session with the speakers. After the event, the talks will be available to watch online for free.

Results summary: 2020 Global Developer Survey "Lite"

By Blog Staff | Apr 14, 2020 03:59 PM | Tags: None

Over the past week, we ran our third annual global C++ developer survey. Thank you to everyone who responded. As promised, here is a summary of the results:

CppDevSurvey-2020-04-summary.pdf

The results have now been forwarded to the C++ standards committee to help inform C++ evolution. Your feedback will be very helpful, and thank you again for your participation! Stay safe, everyone.

Overload 156 is now available

By Adrien Hamelin | Apr 14, 2020 12:21 PM | Tags: community

ACCU’s Overload journal of April 2020 is out. It contains the following C++ related articles.

Overload 156 is now available

From the journal:

R.E.S.P.E.C.T..
Respect can mean many different things. Frances Buontempo muses on its myriad meanings.

Pass the Parcel.
Python’s module and package system has many features. Steve Love explores some more advanced ones.

Quick Modular Calculations (Part 3).
This article concludes the 3-part series. Cassio Neri presents a new algorithm that also works for 64-bit operands.

Deconstructing Inheritance.
Inheritance can be overused. Lucian Radu Teodorescu considers how it can go wrong and the alternatives.

Using Compile Time Maps for Sorting.
Compile time sorting can be interesting. Norman Wilson shows how to sort a map.

Profiting from the Folly of Others.
Code referred to as a hack can raise an eyebrow. Alastair Harrison learns about accessing private members of C++ classes by investigating a header called UninitializedMemoryHacks.h

It’s About Time.
How easy is it to make code wait for a time period before doing something? Mike Crowe looks at ways to avoid problems when a system clock changes.

A Day in the Life of a Full-Stack Developer.
Many roles claim to be full stack. Teedy Deigh shares a day in the life of a full stack developer.

shared_ptr - basics and internals with examples--Hitesh Kumar

By Adrien Hamelin | Apr 14, 2020 12:19 PM | Tags: c++11 basics

Did you know it?

shared_ptr - basics and internals with examples

by Hitesh Kumar

From the article:

The C++11 std::shared_ptr<T> is a shared ownership smart pointer type. Several shared_ptr instances can share the management of an object's lifetime through a common control block. The managed object is deleted when the last owning shared_ptr is destroyed (or is made to point to another object). Memory management by shared_ptr is deterministic because the timing of a managed object's destruction is predictable and in the developer's control. Hence, std::shared_ptr brings deterministic automatic memory management to C++, without the overhead of garbage collection. Here is a basic example of shared_ptr...

corobatch: using coroutines to batch operations with no effort--Francesco Zoffoli

By Adrien Hamelin | Apr 13, 2020 11:06 AM | Tags: c++20

Interested?

corobatch: using coroutines to batch operations with no effort

by Francesco Zoffoli

From the article:

Often performing operations in batch is more efficient than doing them one at a time. Typical examples could be most kinds of I/O, or vectorized instructions.

Unfortunately, doing operations on groups of items at the same time can be much less readable than doing them one element at a time...