rustlings/exercises/06_move_semantics/move_semantics5.rs

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#![allow(clippy::ptr_arg)]
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// TODO: Fix the compiler errors without changing anything except adding or
// removing references (the character `&`).
fn main() {
let data = "Rust is great!".to_string();
get_char(data);
string_uppercase(&data);
}
// Shouldn't take ownership
fn get_char(data: String) -> char {
data.chars().last().unwrap()
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}
// Should take ownership
fn string_uppercase(mut data: &String) {
data = data.to_uppercase();
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println!("{data}");
}