Return a user input in rust

[EsaKurniawan]

use std::io;

fn main() {
fn foo() -> &'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!("{}", foo());

}

[dpc]

Rust Playground

Please refer to: Understanding Ownership - The Rust Programming Language

[quinedot]

Here's a fix with some brief comments.

-    fn foo() -> &'static str {
+    // Return an owned value (`String`)
+    fn foo() -> String {
         println!("Your name...");
         let mut name: String = String::new();
         io::stdin()
             .read_line(&mut name)
             .expect("Something went wrong");

-        return name.trim_end();
+        // 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
    }