C++: Polymorphic Allocators, Debug Resources and Custom Types. In this article, take a look at polymorphic allocators and see how to debug sources and custom types.
In my previous article on polymorphic allocators, we discussed some basic ideas. For example, you've seen a
pmr::vector that holds
pmr::string using a monotonic resource. How about using a custom type in such a container? How to enable it? Let's see.
In the previous article there was similar code:
In this case, when you insert a new string into the vector, the new object will also use the memory resource that is specified on the vector.
And by "use" I mean the situation where the string object has to allocate some memory, which means long strings that don't fit into the Short String Optimisation buffer. If the object doesn't require any extra memory block to fetch, then it's just part of the contiguous memory blog of the parent vector.
Since the pmr::string can use the vector's memory resource, it means that it is somehow "aware" of the allocator.
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Some time ago I wrote about a new way to implement runtime polymorphism which is based not on virtual functions but on std::visit and std::variant. Please have a look at this new blog post where I experiment with this approach on my home project. The experiment is more practical than artificial examples.
Loops in a programming language is a piece of code that get executed repeatedly until the specified condition becomes false. A loop consists of two parts, a block of statements and a condition that control the loop.
Since a few months, I've been refactoring my old C++/OpenGL project. Thus far, I used compilers (MSVC and Clang), my knowledge or free tools. At some point, I also got a chance to leverage a solid static analysis tool - PVS-Studio. The tool helped me with identifying 8 critical issues not to mention good code style and performance enhancements (in total 137 warnings)
If you’re looking for a fast and lightweight open-source code editor, Visual Studio Code has you covered.