It is sometimes necessary for the C++ compiler to create temporary objects.They are used during:
Continue reading “Hacking on Clang to demystify the temporary objects”
As developer, How many times during a day you need to ask google for something related to your work? How to use a library? Is there a fix for an encountered problem?
Maybe the answer is at least once a day.
Currently and as developers, the internet saves us a lot of time. Whatever the problem you have, just search the right keywords in google and instantly and in many cases you have a result that matches your need. Continue reading “Being a Productive C++ Developer Without Internet”
Before the initial standardization in 1998, C++ was developed by Bjarne Stroustrup at Bell Labs since 1979, as an extension of the C language as he wanted an efficient and flexible language similar to C
In 1983, “C with Classes” was renamed to “C++” , adding new features that included virtual functions, function name and operator overloading, references, constants, type-safe free-store memory allocation (new/delete), improved type checking. Continue reading “C++ Algorithm Evolution: A Historical Flashback”
It’s known that the presence of duplicate code has negative impacts on software development and maintenance. Indeed a major drawback is when an instance of duplicate code is changed for fixing bugs or adding new features, its correspondents have to be changed simultaneously.
The most popular reason of duplicate code is the Copy/Paste operations, and in this case the source code is exactly similar in two or more places , this practice is discouraged in many articles, books, and web sites.However, sometimes it’s not easy to practice the recommendations, and the developer chose the easy solution: the Copy/Paste method. Continue reading “Tracking the hidden duplicate code in a C++ code base.”
As Bjarne Stroustrup points out, “C++ is a multi-paradigmed language.” It supports many different styles of programs, or paradigms, and object-oriented programming is only one of these. Some of the others are structured programming, and generic programming. In the last few years C++ experts like Andrei Alexandrescu, Scott Meyers and Herb Sutter promotes the uses of the generic programming and they qualify it as Modern C++ Design.
Here’s what say Andrei Alexandrescu about the Modern C++ design:
Modern C++ Design defines and systematically uses generic components - highly flexible design artifacts that are mixable and matchable to obtain rich behaviors with a small, orthogonal body of code.
Three assertions are interesting in his point of view: Continue reading “C++20 Concepts: Eliminating Generics Paradigm Drawbacks”
Robert C.Martin wrote an interesting article about a set of metrics that can be used to measure the quality of an object-oriented design in terms of the interdependence between the subsystems of that design.
Here’s from the article what he said about the interdependence between modules:
What is it that makes a design rigid, fragile and difficult to reuse. It is the interdependence of the subsystems within that design. A design is rigid if it cannot be easily changed. Such rigidity is due to the fact that a single change to heavily interdependent software begins a cascade of changes in dependent modules. When the extent of that cascade of change cannot be predicted by the designers or maintainers the impact of the change cannot be estimated. This makes the cost of the change impossible to estimate. Managers, faced with such unpredictability, become reluctant to authorize changes. Thus the design becomes rigid.
And to fight the rigidity he introduces metrics like Afferent coupling, Efferent coupling, Abstractness and Instability. Continue reading “The Key to Successful OOP C++ Project: Stable Abstractions”
Linux, Php, and Git are a popular projects developed with C, in the other side OpenOffice, firefox, Clang, Photoshop are developed with C++, so it’s proven that each one is a good candidate to develop complex applications. Try to prove that a language is better than the other is maybe not the good debate. However we can discuss the motivations behind choosing one of them.
When I discovered the opinion of Linus Trovalds about C++, and as a C++ developer I totally disagree with his point of view. But it’s a point of view from the lead developer of the Linux kernel and git and he can’t be totally wrong. Continue reading “Try to understand the Linus Torvalds C++ opinion.”
C++11 and beyond introduced a new thread library. This library includes utilities for starting and managing threads. It also contains utilities for synchronization like mutexes and other locks, atomic variables and other utilities.
It’s a good news to have a standard way to manage the concurrency in C++, indeed before the introduced features in the new standards, many libraries and ways existed to manage the concurrency in the C++ projects. Continue reading “Master C++ Concurrency with ‘Concurrency with Modern C++”
OpenCV (Open Source Computer Vision) is a library of programming functions mainly aimed at real-time computer vision, developed by Intel Russia research center in Nizhny Novgorod. The library is cross-platform. It focuses mainly on real-time image processing.
OpenCV is widely used, Adopted all around the world, for end users, it’s very mature and powerful, for developers it’s well implemented and designed. The OpenCV developers used very basic principles which makes it very simple to understand and maintain.
Let’s discover some OpenCV design choices: Continue reading “Some C++ good practices from the OpenCV source code”
Namespaces were introduced to the C++ Standard in 1995 and usually they are defined like this:
A namespace defines a new scope. They provide a way to avoid name collisions.
Although namespaces are used extensively in recent C++ code, most older code does not use this facility.
After exploring the source code of many C++ projects, here are some common reasons of using the namespaces in these projects. Continue reading “7 Common reasons of using the namespaces in a C++ project.”
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