Trip Report: Freestanding in San Diego--Ben Craig

By Adrien Hamelin | Nov 19, 2018 01:05 PM | Tags: experimental community

One more report.

Trip Report: Freestanding in San Diego

by Ben Craig

From the article:

All three are dealing with "freestanding". I've been working for the last year or so trying to redefine freestanding in a way that would be useful to more people. I have personal experience using C++ in various operating system kernels / drivers, and a bit of experience working on micro controllers and digital signal processors, so that's where my papers focused. At the CppCon 2018 SG14 meeting, some GPU companies have said that my definitions are useful for their architectures (with some tweaks), and I've heard from several other people that my definitions are even useful in some environments where performance and determinism are key, even when there is an OS. I'm still trying to figure out if and how to incorporate all these groups into one thing that could get standardized.

I pitched "Freestanding Proposal" at my first WG21 meeting was November of 2017 in Albuquerque. I was an unknown then. San Diego was my third WG21 meeting. All the papers and interviews and trip reports have now made it where people were asking me about freestanding quite frequently. There were a few times I got stopped while walking around by someone I had never talked to before, and they knew who I was, and asked about freestanding. I found this very flattering. I'm thrilled (and terrified) that my work is getting such visibility...

The Amazing Performance of C++17 Parallel Algorithms, is it Possible?--Bartlomiej Filipek

By Adrien Hamelin | Nov 14, 2018 01:27 PM | Tags: performance c++17

Are you using it?

The Amazing Performance of C++17 Parallel Algorithms, is it Possible?

by Bartlomiej Filipek

From the article:

With the addition of Parallel Algorithms in C++17, you can now easily update your “computing” code to benefit from parallel execution. In the article, I’d like to examine one STL algorithm which naturally exposes the idea of independent computing. If your machine has 10-core CPU, can you always expect to get 10x speed up? Maybe more? Maybe less? Let’s play with this topic.

C++ Coroutine TS — It’s about inversion of control!--Buckaroo

By Adrien Hamelin | Nov 14, 2018 01:22 PM | Tags: experimental

More with less.

C++ Coroutine TS — It’s about inversion of control!

by Buckaroo

From the article:

Many people look at the Coroutines TS and wonder, what is all of the fuss about?

This article gives you one motivating example where lazy sequences enable you to seperate your concerns and maximize code reuse without increasing complexity...

A beginner's look at smart pointers in modern C++

By triangles | Nov 14, 2018 11:37 AM | Tags: c++11

New (!) ways of memory management.

A beginner's look at smart pointers in modern C++

by Triangles @ Internal Pointers

From the article:

Pointers in C and C++ languages are wild beasts. They are extremely powerful, yet so dangerous: a little oversight may wreak havoc on your whole app. Smart pointers were born to fix such annoyances. They provide automatic memory management: when a smart pointer is no longer in use, that is when it goes out of scope, the memory it points to is deallocated automatically.

Trip report: Fall ISO C++ standards meeting (San Diego) -- Herb Sutter

By Blog Staff | Nov 13, 2018 02:29 PM | Tags: None

Fresh from last week's standards meeting:

Trip report: Fall ISO C++ standards meeting (San Diego)

by Herb Sutter

From the article:

On Saturday November 10, the ISO C++ committee completed its fall meeting in San Diego, California, USA, hosted with thanks by Qualcomm. This was the biggest ISO C++ meeting in our 29-year history, with some 180 people at the meeting, representing 12 nations...

Because this is one of the last meetings for adding features to C++20, we gave priority to proposals that might make C++20, and we adopted a number of them for C++20...

2018 San Diego ISO C++ Committee Trip Report

By Adrien Hamelin | Nov 12, 2018 01:29 PM | Tags: experimental

The report is here!

2018 San Diego ISO C++ Committee Trip Report

From the article:

The ISO C++ Committee met in San Diego, California ���� last week to continue work on the next International Standard (IS), C++20. This meeting was the last meeting to consider new proposals for C++20, but existing proposals like modules (on track) and coroutines (questions remain) that are in flight but not merged can still make C++20. We’ll make our final decisions about major language features at the next meeting.

How to Retrieve the Firsts from a Collection of Pairs

By Adrien Hamelin | Nov 12, 2018 01:23 PM | Tags: basics

Simple.

How to Retrieve the Firsts from a Collection of Pairs

by Jonathan Boccara

From the article:

When using the STL, there is a use case that pops up every now and then and that often causes more trouble than necessary: if we have a collection of pairs, like an std::vector of pairs, or simply a std::map, how can we retrieve the collection of the first elements of each item in the collection?

Exploring Clang Tooling Part 3: Rewriting Code with clang-tidy--Stephen Kelly

By Adrien Hamelin | Nov 7, 2018 11:29 AM | Tags: community

The series continue.

Exploring Clang Tooling Part 3: Rewriting Code with clang-tidy

by Stephen Kelly

From the article:

In the previous post in this series, we used clang-query to examine the Abstract Syntax Tree of a simple source code file. Using clang-query, we can prototype an AST Matcher which we can use in a clang-tidy check to refactor code in bulk.

This time, we will complete the rewriting of the source code...

Modules Are Not Precompiled Headers--Guillaume Racicot

By Adrien Hamelin | Nov 6, 2018 01:18 PM | Tags: experimental

Interesting talk about modules.

Modules Are Not Precompiled Headers

by Guillaume Racicot

From the article:

Modules have been the subject of many controversies in the C++ community in the recent past and there seem to be some misconception floating around recently about modules. Important decisions will soon be made, and I wanted to clear some of the facts and raise potentially good questions about modules and the path to their adoption.

I do not want to argue about how modules should have been and what should have not been. Instead I want to talk tabout modules as they are today, in the merged proposal.

String Proxy Puzzle -- Alex Marmer

By Alex Marmer | Oct 30, 2018 10:06 AM | Tags: None

C-style string cannot be used as a template parameter (X<"abc">() won't compile).

String Proxy​ Puzzle

by Alex Marmer

From the article

The puzzle is about how for any C-style string to use it's proxy as a template parameter and how to reconstruct the compile-time string from it.