Comparing Rust Traits to C++ Concepts

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🚀 Ayo! Today we're doing yet another modern C++ stream, where we develop a little profiler tool for my 6502 emulator. In the process, we will talk about how we can use C++20 Concepts to improve compiler errors and development of generic code.
🖥️ I will go over how this works in other languages (like Rust and Golang), and how C++ differs in the implementation of traits/concepts/interfaces.
👨‍💻 Get ready to pair program with me! Tune in to learn, ask questions, and geek out over the coding journey! 🔥
Looking forward to seeing some of you in this cosy Saturday evening 👊
#concepts #cpp #modern #programming
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Опубликовано:

11 май 2024

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Комментарии : 5

@heavymetalmixer91 24 дня назад

What you mentioned around 10 mins mark is that Rust is kinda like a GCed language?

@codingwithmat 24 дня назад

What I meant is that "drop" in Rust doesn't behave in the same way destructors do in C++. I.e. if you create a struct in Rust at the top of a function and never use it again in the stack, it will be dropped before the end of the function. In C++, the guarantee is that the destructor will be called at the end of the function, making it easier to have a profiler class with that behaviour -> start timing when the object is created, and when object is deleted we save the profile timing :)

@codingwithmat 24 дня назад

and to answer the question: Rust isn't a garbage collected language .

@heavymetalmixer91 24 дня назад

@@codingwithmat Thanks for both answers, the topic of reference-counting (which I was told Rust does in some way) is complicated sometimes.

@codingwithmat 23 дня назад

@@heavymetalmixer91 It is indeed, this is how I think Rust works: when the variable is no longer used, drop it. Reference counting happens in more detail in objects like `std::shared_ptr` in C++, where we keep track of how many different references there are to an object before we're allowed to destroy it. The equivalent in Rust would be a `Rc` object.