mirror of
https://github.com/rust-lang/rustlings
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47 lines
789 B
Rust
Executable File
47 lines
789 B
Rust
Executable File
// strings1.rs
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// Make me compile without changing the function signature! Scroll down for hints :)
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fn main() {
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let answer = current_favorite_color();
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println!("My current favorite color is {}", answer);
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}
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fn current_favorite_color() -> String {
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"blue"
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}
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// The `current_favorite_color` function is currently returning a string slice with the `'static`
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// lifetime. We know this because the data of the string lives in our code itself -- it doesn't
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// come from a file or user input or another program -- so it will live as long as our program
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// lives. But it is still a string slice. There's one way to create a `String` by converting a
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// string slice covered in the Strings chapter of the book, and another way that uses the `From`
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// trait.
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