Embedded Book Become proficient with Rust for Microcontrollers and other embedded systems. WebAssembly Book Use Rust to build browser-native libraries through WebAssembly. So technically it's not a function, but a procedure that mimicks methods from OOP.Īnd I guess it's perfectly fine, especially given that it's dictated by the reasons of performance and explicit resources control, but for someone with functional mindset (such as myself) it might be quite painful to adjust. Command Line Book Learn how to build effective command line applications in Rust. Now why I call these procedures: do_something(&mut self) would not return anything, and rather mutate the state of the struct it's attached to. And in this case it's perfectly fine to call functions (procedures?) with refs multiple times. Instead Rust encourages using borrowing: length(list: &Vector) -> i32 and passing refs in this case. And none of the subsequent calls on a variable holding that vector will work. If you call it on a vector, it'll be moved. Suppose you have a Vector and a function length(list: Vector) -> i32 that returns length. Even though you can formally do the same with Rust, it won't work in practice, here's the example. So functions are pure: they take values and return a fresh value. You mentioned Haskell, and even though it's been many years since I played with it, but if I'm not mistaken it doesn't allow mutation of a function arguments. Let's figure out what is functional first. You can install Rust on Linux or macOS with this command You will see installation instructions for your operating system. I prefer rustup to install Rust language. In this chapter, we'll see installation processes, our first program, and cargo. In this post, I'll use The Rust Programming Language documentation. If you used any programming language before, the first steps aren't hard to understand what is happening. You can build system software, web applications, etc. Through balancing powerful technical capacity and great developer experience, Rust gives you the option to control low-level details (such as memory usage) without all the hassle traditionally associated with such control. High-level ergonomics and low-level control are often at odds in programming language design Rust challenges that conflict. The Rust programming language helps you write faster, more reliable software. Hi everyone! In this post, I'll talk about Rust programming language.
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