One more thing about rust
You will hear me say the following words
- value
- mutable reference or mutable borrow
- immutable reference or immutable borrow
This isn't something that as a JS dev you think about.
So what is a reference (probably heard the term)? What is a mutable reference? (probably never heard this)? (whiteboard)
() is a unit
() is called "unit." Effectively it is "nothing" value.
if true {
println!("foo");
}
// I could write this
// --v this has type ()
let foo = if true {
println!("foo");
}