https://izaron.github.io/Izaron's C++ blog 2024-05-09T18:48:58+00:00 Evgeny Shulgin https://izaron.github.io/ Jekyll © 2024 Evgeny Shulgin /assets/img/favicons/favicon.ico /assets/img/favicons/favicon-96x96.png 2023-02-12T11:00:00+00:00 2023-02-12T11:00:00+00:00 https://izaron.github.io/posts/multichar/ Evgeny Shulgin

When you explore a file format, you may find file signatures. A file signature is a sequence of bytes that used to verify the content of a file. A file signature may look as a sequence of “magic bytes” (unique for this type) at the beginning of a file. There is a list of file signatures for some formats on wikipedia. Bytes at the beginning of the file are often human-readable, meaning that the...

2023-01-26T11:59:00+00:00 2023-02-10T00:59:16+00:00 https://izaron.github.io/posts/exceptions-gc/ Evgeny Shulgin

I do not mean technical similarity, but the very principle of having a feature of this sort. Initially, the feature looks cool and can be used seamlessly “out of the box”. But when there is a need to fix something in this feature, the programmer will be tortured, digging into the technical implementation of the feature. 🔍 For example, in Java (and other languages with garbage collection), it ...

2023-01-24T19:15:00+00:00 2023-02-10T00:59:16+00:00 https://izaron.github.io/posts/clang-contrib-threshold/ Evgeny Shulgin

Once in a C++ chat, a guy asked whether it make sense to investigate and send bugfixes to existing compilers? There definitely must be a lot of people who want to fix bugs, and the issues just disappear instantly, he thought 😱 In fact, the situation with Clang/LLVM (and with many other projects) is the opposite. There are thousands of issues that no one fixes for years. The review process is ...

2023-01-06T11:54:00+00:00 2023-02-10T00:59:16+00:00 https://izaron.github.io/posts/most-vexing-modular/ Evgeny Shulgin

While developing my pet project, I encountered what I call the most vexing C++ rule in my experience, at least for modular programs. It is linker-specific and requires sort of secret knowledge to deal with it. In large modular projects, often each business logic module corresponds to a single static library. If some module is not linked to the executable binary file (via a flag of the build s...

2023-01-01T19:15:00+00:00 2023-02-10T00:59:16+00:00 https://izaron.github.io/posts/std-function/ Evgeny Shulgin

This post was written under influence of a cool video from Jason Turner “A simplified implementation of std::function” Often people don’t think about how std::function works. Most people know that this thing is a wrapper over something that can be “called” as a function. Some people vaguely remember that std::function somehow mess with memory on the heap. The cppreference does not reveal muc...