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[SOLVED] Return a value in function on rust
// the code below fn ask_name() -> &'static str { println!("Your name..."); let mut name: String = String::new(); io::stdin() .read_line(&mut name) .expect("Something went wrong"); return name.trim_end(); } println!("{}", ask_name());
7 Antworten
+ 1
The lifetime of your str is not static. Return a String instead, passing ownership out.
fn ask_name() -> String {
// ...
return name.trim_end().to_owned();
}
+ 1
Oh, all right :) What did they suggest?
+ 1
Right. Passing ownership out :)
+ 1
😅
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Actually already fixed it a long time ago, with help from rust community
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They suggested something like this:
fn foo() -> String {
println!("Your name...");
let mut name: String = String::new();
io::stdin()
.read_line(&mut name)
.expect("Something went wrong");
// Trim the owned `String`
let len = name.trim_end().len();
name.truncate(len);
// The canonical way to return a value in Rust is to just have an
// expression with no `;` at the end
name
}
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Honestly i didn't understand that, but it's work🤣🤣