Vars and muts )ruff(

Tyr — Mon, 10 Aug 2026 21:43:28 +0000

Okay Okay, I've used the Rust book online and W3 schools mostly to learn most of what I know. Plus a video or two, but I can't focus on them as of well.

Alright, first time putting this to text, but I'll try and explain the concepts, how I myself understand them. From Ch 3 of the Rust book.

So in CH 3 it essentially focuses on variables )your x's, y's etc. etc.( and how variables in rust are by def not able to changed, "immutable" by the book.

The gist of why is that it guarantees the variable isn't changed when it's not supposed to be or by another function.

It also just serves like a safety blanket of sorts, say if you were to have a huge program. You use "let x = 5" you'll know that x = 5 EVERYWHERE. It won't change because the program won't run, you won't even get past the compiler if you try and change the value without saying it can change.

This helps in stopping bugs from cropping up, specially since it's how malactors get in. helps debugging by knowing what can and can't flip a bit. Plus if you're building robust code, less stuff changing is better, cuz less stuff fails.. Like a car.

fn main () {
 let x = 5;
 x = 20294; // you can't change this, it'll show as an error since you "x" isn't "mut" mutable, or changeable.
}

simple, right? Roast me if wrong.
08.10.26
-Tyr

Yo

Tyr — Mon, 10 Aug 2026 11:26:47 +0000

Helloooo~
I'm Tyrkanzyka, and I'm looking to learn how to learn.

And I'm more treating this site like a passive journal anyone is free to give feedback to.

So, I have some basic tech background, think tier 1 stuff. Very basic.
I'm learning Rust as my first language (won't lie, everyone says it's hard I was trynna be unique) either way I got...somewhat? Of a hang of it, I'm getting through it pretty slowly as it's my first language, from syntax and all.
Anyway this is more of an introductory post to my journal. I'll post some more things, try and recap what I learned.

08.10.26
-Tyr

DEV Community: Tyr

Vars and muts )ruff(

Yo