`let mut` — Opting Into Mutability - Day 07
Yesterday we saw that let gives you an immutable binding. But sometimes you genuinely need a variable to change — a counter, a running total, a buffer being filled. For t…
rust for java dev
`let` vs Java's `var`: Immutable by Default - Day 06
In Java, variables are mutable unless you slap final on them. Most developers don’t bother, so everything ends up mutable by default — even when it doesn’t need to be.
`println!` — Why That `!` Matters - Day 05
You’ve seen println!("Hello, world!") already. But why the exclamation mark? In Rust, ! means you’re calling a macro, not a regular function.
`fn main()` — What a Rust Program Looks Like - Day 04
Open src/main.rs and you’ll see this:
`cargo new` — Your First Rust Project - Day 03
In Java, starting a project means choosing Maven or Gradle, creating a directory structure, writing a pom.xml or build.gradle, and eventually getting to actual code. In R…
Installing Rust: `rustup` is Your New Best Friend - Day 02
Setting up a Java project used to mean downloading a JDK, setting JAVA_HOME, maybe fighting with your IDE, and picking a build tool. Rust makes this refreshingly simple.
Why Rust? A Java Dev's 5-Minute Reality Check - Day 01
You’ve been writing Java for years. It works. Your apps run fine. So why would you even look at Rust?