By Adrien Hamelin | Aug 7, 2019 11:27 AM | Tags: community c++17
Table of contents.
C++ Core Guidelines: Supporting Sections
by Rainer Grimm
From the article:
Let's recapitulate. In the last two years, I have written about 100 posts to the C++ Core Guidelines. Why? The document answers: "This document is a set of guidelines for using C++ well. The aim of this document is to help people to use modern C++ effectively.". But my story does not end here. The guidelines have a supporting section...
By Adrien Hamelin | Aug 7, 2019 11:17 AM | Tags: community
Discover the person presenting at CppCon.
Presenter Interviews: Kate Gregory
by Kevin Carpenter
From the article:
In this week’s presenter interview, Kevin Carpenter welcomes back Kate Gregory to preview her upcoming talk Naming is Hard: Let’s Do Better. Kate’s talk will discuss how bad we as C++ developers can be when it comes to naming things and how we could improve.
By Adrien Hamelin | Aug 7, 2019 11:06 AM | Tags: advanced
Quick A: to help the compiler understand what the programmer wants.
Recently on SO:
Where and why do I have to put the “template” and “typename” keywords?
In order to parse a C++ program, the compiler needs to know whether certain names are types or not. The following example demonstrates that:
t * f;How should this be parsed? For many languages a compiler doesn't need to know the meaning of a name in order to parse and basically know what action a line of code does...
By Andrey Karpov | Aug 6, 2019 02:00 AM | Tags: static code analysis sast pvs-studio linux devtool devops
There are different ways to install PVS-Studio under Linux, depending on your distro type. The most convenient and preferred method is to use the repository, since it allows auto-updating the analyzer upon releasing new versions.
Getting Started with the PVS-Studio Static Analyzer for C++ Development under Linux
by Yuri Minaev
From the article:
Besides strace, you can base the analysis on the compile_commands.json (JSON Compilation Database) file. Many build systems have built-in means of exporting compilation commands, or you could use the BEAR utility to do this. Here's the command to launch the analysis in this case: pvs-studio-analyzer analyze –f /path/to/compile_commands.json
By Adrien Hamelin | Aug 5, 2019 12:48 PM | Tags: community
Take a listen.
Approval Tests with Clare Macrae
by CppCast
From the article:
Clare is an independent consultant, helping teams streamline their work with legacy and hard-to-test C++ and Qt code.
She has worked in software development for over 30 years, and in C++ for 20 years...
By Adrien Hamelin | Aug 5, 2019 12:44 PM | Tags: community
Go check it out.
My C++Now Talk on Smart Output Iterators
by Jonathan Boccara
From the article:
If you’ve been reading Fluent C++ over the past few weeks, then you’ve noticed that we spent some time on smart output iterators...
By Adrien Hamelin | Aug 5, 2019 12:42 PM | Tags: basics
Quick A: optimisation compilers are allowed to do for perfomance.
Recently on SO:
What are copy elision and return value optimization?
Copy elision is an optimization implemented by most compilers to prevent extra (potentially expensive) copies in certain situations. It makes returning by value or pass-by-value feasible in practice (restrictions apply).
It's the only form of optimization that elides (ha!) the as-if rule - copy elision can be applied even if copying/moving the object has side-effects...
By rodburns | Aug 1, 2019 11:43 PM | Tags: None
Dynamic polymorphism is a widely used C++ feature that allows code to be more flexible, and helps create easily extendable interfaces by overriding the base class specified interfaces inside our derived classes. However, in SYCL kernel code in order to emulate dynamic polymorphism we need to use some curious tricks and techniques.
Enabling Polymorphism in SYCL using the C++ idiom "Curiously Recurring Template Pattern"
by Georgi Mirazchiyski
From the article:
The CRTP idiom offers an alternative approach to polymorphism by providing us with the ability to specify static interfaces, where the base class specifies the the structure of the interface, while the derived one represents the implementation. In this case, the base class does represent the interface and the derived class represents the implementation — similar to the general idea of polymorphism.
By Ansel Sermersheim | Aug 1, 2019 11:42 PM | Tags: None
New video on the CopperSpice YouTube Channel:
Inline Namespaces
by Barbara Geller and Ansel Sermersheim
About the video:
In this video, we discuss the purpose of namespaces and the functionality C++11 added with the inline namespace syntax. Join us to find out how inline namespaces can help library developers maintain backward compatibility and how they work.
Please take a look and remember to subscribe!
By Andrey Karpov | Jul 30, 2019 10:23 AM | Tags: static code analysis static analysis sast legacy code code quality
Gradually and imperceptibly we get the situation when C++ projects’ complexity becomes extreme. Unfortunately, now a C++ programmer can’t be on his own.
Why Static Analysis Can Improve a Complex C++ Codebase
by Andrey Karpov
From the article:
Analyzers know more than even professional developers. It has become too difficult to take into account and remember all the nuances when writing code. For instance, if you haven’t specifically read about it, you’ll never guess that calls to memset function for clearing private data sometimes disappear, as from a compiler’s point of view, a call to memset function is redundant. Meanwhile, it is a serious security defect CWE-14 that is detected literally everywhere.