mirror of
https://github.com/rust-lang/rustlings.git
synced 2024-12-26 23:36:30 +00:00
45 lines
774 B
Rust
45 lines
774 B
Rust
// Make me compile without changing the function signature! Scroll down for hints :)
|
|
|
|
fn main() {
|
|
let answer = current_favorite_color();
|
|
println!("My current favorite color is {}", answer);
|
|
}
|
|
|
|
fn current_favorite_color() -> String {
|
|
"blue"
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// The `current_favorite_color` function is currently returning a string slice with the `'static`
|
|
// lifetime. We know this because the data of the string lives in our code itself -- it doesn't
|
|
// come from a file or user input or another program -- so it will live as long as our program
|
|
// lives. But it is still a string slice. There's one way to create a `String` by converting a
|
|
// string slice covered in the Strings chapter of the book, and another way that uses the `From`
|
|
// trait.
|