mirror of
https://github.com/rust-lang/rustlings.git
synced 2026-01-09 20:29:18 +00:00
29 lines
548 B
Rust
29 lines
548 B
Rust
// move_semantics6.rs
|
|
//
|
|
// You can't change anything except adding or removing references.
|
|
//
|
|
// Execute `rustlings hint move_semantics6` or use the `hint` watch subcommand
|
|
// for a hint.
|
|
|
|
|
|
|
|
fn main() {
|
|
let mut data = "Rust is great!".to_string();
|
|
|
|
get_char(data.clone());
|
|
|
|
string_uppercase(&mut data);
|
|
}
|
|
|
|
// Should not take ownership
|
|
fn get_char(data: String) -> char {
|
|
data.chars().last().unwrap()
|
|
}
|
|
|
|
// Should take ownership
|
|
fn string_uppercase(data: &mut String) {
|
|
*data = data.to_uppercase();
|
|
|
|
println!("{}", data);
|
|
}
|