For quite some time, I am getting more interested in programming languages that have good documentation, a large community and accelerating adoption in various sectors in the industry.

Rust came to mind. I just want to write this because there are some things in Rust that actually make sense to me as a language. I might be guilty that I have been influenced by the hype since the start of COVID-19, but after 3 years or so, learning the language, talking with people, reading again the documentation - things have started to make sense and that's why I fell in love with Rust. Here are the whys.

Shared Behaviours§

Although, these concepts are most likely OOP, I never really appreciated OOP in Python. Maybe because of lack of experience? Or interest in the language? Or maybe I just hate Python. I never said I won't be biased in this post so...

Anyway, a shared behaviour in Rust is one of the best things that makes sense to me. These are called traits, and Rust actually stole this from Java's interfaces.

A trait will look like something like this

trait Fruit {
    fn has_seed() -> bool;
}

struct Apple { species: String }
struct Banana { species: String }

impl Fruit for Apple {
    fn has_seed() -> bool {
        true
    }
}

impl Fruit for Banana {
    fn has_seed() -> bool {
        false
    }
}

And it's a very nice addition to Rust. Whoever thought of this is a genius!

Generics§

Rust's generics are one of my favourites. It allows more flexibility and fine-grained control. For example, there are many environments of how a fruit is grown, be it LaboratoryGrown, or Natural.

trait Fruit<Kind> {
    fn has_seed(kind: Kind) -> bool;
}

impl Apple<LaboratoryGrown> {
    fn has_seed(kind: LaboratoryGrown) -> bool {
        false
    }
}

impl Apple<Natural> {
    fn has_seed(kind: Natural) -> bool {
        true
    }
}

Some concepts that took me months to understand§

Who owns who?§

At first, when I was starting with Rust, I didn't understand the ownership system because I don't have experience writing in C or any language that involves pointers and references heavily. However, I self-studied just enough to understand these concepts and it's starting to makes sense! Well to me...

Although, I don't have years of experience writing in C, Rust babysits me teaching me about references and pointers while also protecting me from mistakes like using the same pointer to manipulate data, or doing stupid shit like dropping data from the heap too early.

I am resuming to learn C a few days after this to understand footguns Rust wants me to avoid.

Abstractions pamper me§

Rust just hides away some of the abstraction from you but also shows you that these elisions (thanks firstyear, new word) are not actually hidden. They're just common patterns most would take so elided so that they can be written a little less verbose, and a little less yuck.

Rust ecosystem§

Rust has like many popular crates to choose from. The community loves to curate and makes it way easier to getting started with Rust even for someone like me who still considers himself not a good programmer. I still do think that I am not good but I love to learn cool stuff.

What actually made me fall in love with Rust§

The reason is because of Rust's syntax. I know, someone may already have expected, "oh you love Rust because it's blazingly fast!!!", but the reality is, what got me hooked into Rust the first time was actually its verbose syntax. The first time I tried reading it, its verbosity made me feel comfortable like it's not hiding anything from me. Whereas, in Python, I always feel uncomfortable... I am not sure why, even though I have some experience with it during the Hyperskill beta test by JetBrains of which I completed at least 90% of the beta test.

But yeah, Rust's choice of symbols for its syntax and the feeling of "I am not hiding anything, I can tell you if you ask the right questions" is the reason I fell in love with the language.

BTW, I also heard you like Julia§

Nah... can't hate what I haven't written for a while. I guess packaging Julia is a pain in the ass, that much is true.