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Exercises to explore immutable borrowing, mutable borrowing, and "aliasing xor mutability".
19 lines
438 B
Rust
19 lines
438 B
Rust
// borrowing1.rs
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// If you want to let a function borrow a variable but not move it,
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// you can use references. This allows you to use the variable later.
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// Make this compile without cloning `hello`.
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// I AM NOT DONE
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fn main() {
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let hello = String::from("Hello world!");
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let length = string_size(hello);
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println!("The string `{}` has {} characters", hello, length);
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}
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fn string_size(s: String) -> usize {
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s.len()
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}
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