October 25, Pavia, Italy
November 6-8, Berlin, Germany
November 3-8, Kona, HI, USA
By Blog Staff | Nov 11, 2022 11:19 AM | Tags: None
Tick, tock...
Improving my C++ time queue
by Marius Elvert
From the article:
Another code snippet that can be found in a few of my projects is the “time queue”, which is a simple ‘priority queue’ style data structure that I use to defer actions to a later time. ...
By Andrey Karpov | Nov 2, 2022 01:39 AM | Tags: temporary objects lifetime
After reading this article, you will learn the following: ways to extend the lifetime of a temporary object in C++, various tips and tricks; pitfalls of the lifetime extension that a C++ programmer may face.
Lifetime extension of temporary objects in C++: common recommendations and pitfalls
by Evgeny Neruchek
From the article:
You can extend the lifetime of a temporary array by referencing one of its elements. C++ has a special mechanism for this. But I would recommend you using it only in the disputes with your co-workers (and maybe in metaprogramming with the old C++ standards), since this mechanism is not so easy-to-use. However, using this mechanism does not result in dangling references, and the lifetime of the temporary array is extended to the lifetime of the reference to its element.
By Giovanni Dicanio | Oct 27, 2022 12:01 PM | Tags: None
In Windows C++ programming many times there's a need to convert text between UTF-8 and UTF-16 encodings.
Convenient Unicode Conversion Functions for Windows C++ Code
by Giovanni Dicanio
From the article:
I published on GitHub a header-only library (Utf8Conv) that implements some convenient functions to convert text between UTF-8 and UTF-16 Unicode encodings.
I developed the library using Visual Studio 2019 with C++17 features enabled.
By Blog Staff | Oct 18, 2022 10:28 AM | Tags: None
Of Bridges and Pimpls:
The Bridge Pattern
by Rainer Grimm
From the article:
In C++, a simplified version of the Bridge Pattern is often used. ... The key idea of the Pimpl Idiom is that the implementation of the class is hidden behind a pointer. Here is a recipe for implementing the Pimpl Idiom: ...
By Blog Staff | Oct 6, 2022 09:35 AM | Tags: None
New in this month's Overload magazine:
The power of ref-qualifiers
by Andreas Fertig
From the article:
... What I have illustrated is that there is an issue with range-based
for-loops. In (1), we callGetKeeper().items()in the head of the range-basedfor-loop. By doing this, we create a dangling reference.ref-qualifiers to the rescue
Now, this brings us to ref-qualifiers. They are often associated with
movesemantics, but we can use them withoutmove. However, we will soon see why ref-qualifiers make the most sense withmovesemantics.A version of
Keeperwith ref-qualifiers looks like Listing 2...
By Blog Staff | Oct 5, 2022 01:57 PM | Tags: None
Worth waiting for:
The gotcha of the C++ temporaries that don’t destruct as eagerly as you thought
by Raymond Chen
From the article:
Forgetting to take a lock when updating variables is a common mistake. One way to make the mistake harder to make is to force the access to occur through some mechanism that proves that you possess the lock. Maybe something like this: ...
By Blog Staff | Oct 4, 2022 03:56 PM | Tags: None
Why do now what you can do later (or not at all)?
Deferred argument evaluation
by Joaquín M López Muñoz
From the article:
Ideally, we'd like for
try_emplaceto not create the object except when really needed. What we're effectively asking for is some sort of technique for deferred argument evaluation. As it happens, it is very easy to devise our own: ...
By Blog Staff | Oct 4, 2022 03:52 PM | Tags: None
Have you used the patterns?
The Singleton: The Alternatives Monostate Pattern and Dependency Injection
by Rainer Grimm
From the article:
So far, I have discussed in my previous posts the Singleton Pattern, and its pros and cons. One question is still open: What alternatives for the Singleton Pattern are available? Today, I write about the Monostate Pattern and Dependency Injection...
By Blog Staff | Oct 4, 2022 03:49 PM | Tags: None
One if by latch, two if by barrier:
C++20 Concurrency: Barrier
by Gajendra Gulgulia
From the article:
In this article, I’ll present a simple example of
std::barrierby means of game players playing a hypothetical card game and go into the details of the api ofstd::barrierin another article...
By Meeting C++ | Oct 1, 2022 06:46 AM | Tags: meetingcpp community
The monthly listing on Meeting C++ about upcoming C++ User Group meetings:
Upcoming C++ User Group meetings in October 2022
by Jens Weller
From the article:
This month Meeting C++ online hosts some special events:
Meeting C++ online job fair:
The Meetings
4.10 C++ UG Meeting C++ online - Online C++ job fair (afternoon CEST)
5.10 C++ UG Meeting C++ online - Online C++ job fair (evening CEST)
20.10 C++ UG Meeting C++ online - October - AMA with Nicolai Josuttis
25.10 C++ UG Meeting C++ online - Meeting C++ online book & tool fair
With Bjarne Stroustrup and Klaus Iglberger
...