mirror of
https://github.com/rust-lang/rustlings.git
synced 2024-10-22 00:00:03 +03:00
22 lines
408 B
Rust
22 lines
408 B
Rust
// You can't change anything except adding or removing references.
|
|
|
|
fn main() {
|
|
let data = "Rust is great!".to_string();
|
|
|
|
get_char(data);
|
|
|
|
string_uppercase(&data);
|
|
}
|
|
|
|
// Should not take ownership
|
|
fn get_char(data: String) -> char {
|
|
data.chars().last().unwrap()
|
|
}
|
|
|
|
// Should take ownership
|
|
fn string_uppercase(mut data: &String) {
|
|
data = &data.to_uppercase();
|
|
|
|
println!("{}", data);
|
|
}
|