C++17 New Rules For auto Deduction From braced-init-list

Initialization of variables in C++ can have several forms: default initialization: std::string s; value initialization: std::string s{}; direct initialization: std::string s(“demo”); copy initialization: std::string s = “demo”; list initialization: std::string s{‘d’, ‘e’, ‘m’, ‘o’}; aggregate initialization: char s[5] = {‘d’, ‘e’, ‘m’, ‘o’}; reference initialization: char& c = s[0]; C++11 introduced a generalized syntax for…

Inline out variables and ref locals and returns in C# 7

In C#, function parameters can be declared with the ref or out modifier, the former indicating that a value is already set and the function can read and write it, and the later that the value is not set and the function must do so before returning. As a side note, there is a good…

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VisualC++ Is Now Available on Compiler Explorer

Matt Godbolt has announced today that the Visual C++ compiler is finally available on Compiler Explorer (https://godbolt.org/). Compiler Explorer is a website where you can write C/C++/Rust/Go/D code, compile it with various compilers and settings and see the resulted assembly code. #CompilerExplorer now has VS 2017 compilers! Huge thanks to @Microsoft and @apardoe! — Matt…

Dining philosophers in C++11: Chandy-Misra algorithm

In my previous post, Dining Philosophers in C++11, I have provided an implementation for the dining philosophers problem using modern C++ features, such as threads and mutexes. However, it was noted in the comments that the implementation did not prevent the philosophers starving to death when you remove the waiting times. An algorithm that prevents…

Dining Philosophers in C++11

UPDATE: for an implementation of the Chandy/Misra solution see Dining philosophers in C++11: Chandy-Misra algorithm The problem of the dining philosophers, first proposed by Edsger Dijkstra and reformulated by Tony Hoare, is a famous problem for concurrent programming that illustrates problems with synchronizing access to data. The description of the problem, taken from Wikipedia, is…

New standard library features in Visual C++ 2017 RC

The new Visual C++ 2017, currently in release candidate phase, provides a series of updates and fixes to both the C++ compiler and the standard library. A comprehensive list of these improvements is available at What’s New for Visual C++ in Visual Studio 2017 RC. In this article, I want to shortly look at the…

Impressions from the ISO C++ committee meetings in Issaquah

Last week I was in Redmond for the Microsoft MVP 2016 Summit. At the same time, the ISO C++ committee was having its fall meeting in Issaquah, which is very close to Redmond. Therefore, after the summit ended, a group of VC++ MVPs, including myself, decided to make the short trip to Issaquah and attend…

Top 10 features that I miss from C++

DISCLAIMER: the following is a pure hypothetical list of wishes I had about C++. You should treat it as it is. This is not supposed to be a collection of community agreed list of wishes, nor it is intended to make complete sense, as some of these features are available through the standard library. Please…

My book on modern C++ programming

I am happy to announce that my book on modern C++ programming called Modern C++ Programming Cookbook, published by Packtpub, can now to pre-ordered. The book will be published around mid 2017, but pre-ordering gives you early access to the content as it is written. As the title shows, the book is a cookbook with…