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By Adrien Hamelin | Jul 11, 2017 12:05 PM | Tags: community c++17 c++14 c++11
A good knowledge base:
C++17/14/11: A cheatsheet of modern C++ language and library features.
by Anthony Calandra
From the article:
Many of these descriptions and examples come from various resources (see Acknowledgements section), summarized in my own words...
By Adrien Hamelin | Jul 11, 2017 11:54 AM | Tags: experimental community
The future is not here yet that it's already full of resources!
It had to be done - Abusing co_await for optionals
by redditsoaddicting
From the article:
I finally got around to playing with coroutines in the context of non-future types. I always guessed this could be done. For optionals specifically, the idea is that you do auto x = co_await foo(); and either x is the value in the optional or the function immediately returns an empty optional...
By bfilipek | Jul 10, 2017 07:36 PM | Tags: None
Another part of the series on C++17 details.
C++17 in details: Attributes
by Bartlomiej Filipek
From the article:
Previously each compiler could specify its own syntax and list of available attributes, but in modern C++ the committee tried to standardize this: there are some extracted, common parts. Plus each compiler is not blocked to add its own extensions. Maybe at some point, we’ll move away from
__attributeor__declspecor#pragma?
By Adrien Hamelin | Jul 10, 2017 12:14 PM | Tags: intermediate c++11
Quick A: Create member functions begin() and end() returning an iterator.
Recently on SO:
How to make my custom type to work with “range-based for loops”?
The standard has been changed since the question (and most answers) were posted in the resolution of this defect report.
The way to make a
for(:)loop work on your type X is now one of two ways:
- Create member
X::begin()andX::end()that return something that acts like an iterator- Create a free function
begin(X&)andend(X&)that return something that acts like an iterator, in the same namespace as your type X.And similar for const variations. This will work both on compilers that implement the defect report changes, and compilers that do not.
By Adrien Hamelin | Jul 10, 2017 12:08 PM | Tags: c++11 basics
Quick A: It calls the initializer_list constructor that has the same effect in this case.
Recnetly on SO:
Initializing a C++11 string with {}
The
{}initialization syntax is known as the uniform initialization syntax, it has a few key differences, but in your code as is they both do the same thing - construct astd::stringobject from the string literal "Test"Initializing an object with an assignment is essentially the same as putting the right hand side in parentheses and constructing the object. For example the below two are the same
T obj = a; T obj(a);So you should be asking yourself, what is the difference between constructing a string object the following two ways
std::string{"Test"}; std::string("Test");And the answer is that both the constructions above are the same and call the same constructor for
std::stringFor more on uniform initialization see https://softwareengineering.stackexchange.com/questions/133688/is-c11-uniform-initialization-a-replacement-for-the-old-style-syntax
By Meeting C++ | Jul 10, 2017 05:59 AM | Tags: security fuzzing experimental clang c++11 boost advanced
A short blog post about my experience in fuzzing beast during my boost review
Fuzzing beast with libFuzzer
by Jens Weller
From the article:
During the weekend I wanted to take a closer look at beast, a http library proposed for boost. I planned to write an http client class, as thats something I'll need in some project later anyways. I've been looking at beast on and off for a few month now, and started by reviewing the documentation and examples to get a feel for the library it self.
By Adrien Hamelin | Jul 7, 2017 02:03 PM | Tags: community advanced
The series continues.
Making things do stuff
by Glennan Carnie
From the article:
As code designers we tend to eschew specific ‘stove-pipe’ code in favour of reusable code elements. Up until now we’ve been coding some very specific examples so it’s probably worth looking at some more generic solutions...
By Adrien Hamelin | Jul 7, 2017 01:59 PM | Tags: c++11 basics
And how they are used by the std:
Functors in C++
by Mayank Jain
From the article:
Functor or function object is a C++ class which defines the operator ( ). Functor let’s you create objects which “looks like” functions...
By TartanLlama | Jul 7, 2017 12:35 PM | Tags: None
A post about an application of the new Metaclasses proposal.
Metaclasses for embedded domain specific languages
by Simon Brand
From the article:
Metaclasses are a proposed feature to C++ which will allow the creation of abstractions over classes and the extension of the language’s type definition system. Templates are a powerful host for other languages, and metaclasses only make them more so.
By Adrien Hamelin | Jul 6, 2017 11:58 AM | Tags: community
Complete set up of a project:
Modern C++ CI
by Juan Medina
From the article:
Modern C++ is great, some people are even calling it a new language, but is not only the language what is evolving the tool-chain is getter better, so doing continuous integration for cross platform projects is simple and effective.
I decide to do a simple project using some of the C++14 features and following the C++ Core Guidelines whenever its possible. The result is available in this repository.