Rust Notes: Vectors

// Create an empty mutable empty vector.
// The type of the elements must be annotated.
let mut stuff_and_things: Vec<&str> = Vec::new();

// Add items to the vector.
stuff_and_things.push("stuff");
stuff_and_things.push("things");

// Access the elements of a vector with square brackets and the index number.
println!("{}", stuff_and_things[0]); // => stuff
println!("{}", stuff_and_things[1]); // => things

// Accessing an element that is out of bounds will result in a panic.
println!("{}", stuff_and_things[2]); // => PANIC!

// Create an immutable vector with 2 elements using the literal syntax.
let stuff_and_things = vec!["stuff", "things"];

// Specify the type annotation
let stuff_and_things: Vec<&str> = vec!["stuff", "things"];

// Create a mutable vector with the literal syntax
let mut stuff_and_things = vec!["stuff", "things"];