/// Takes ownership of a 3-element array of strings and uses an array pattern
/// to move the elements out by value, returning them individually in a tuple.
pub fn move_elements_out(arr: [String; 3]) -> (String, String, String) {
// Destructuring the owned array by value moves each element out.
// `first`, `second`, and `third` now own their respective Strings.
// The array `arr` is fully consumed here.
let [first, second, third] = arr;
// Return the owned elements
(first, second, third)
}
fn main() {
// Create a stack-allocated array of Strings (Strings implement `Clone` and `Drop`,
// but not `Copy`, which forces a true ownership move).
let word_array = [
String::from("Alpha"),
String::from("Beta"),
String::from("Gamma"),
];
println!("Moving elements out of the array...");
// Pass the array by value, transferring ownership into the function
let (w1, w2, w3) = move_elements_out(word_array);
println!("Extracted Element 1: {}", w1);
println!("Extracted Element 2: {}", w2);
println!("Extracted Element 3: {}", w3);
// -------------------------------------------------------------------------
// COMPILE-TIME SAFETY CHECK:
// If you uncomment the line below, the compiler will throw a
// "use of moved value: `word_array`" error because the array was consumed
// when its elements were moved out.
//
// println!("{:?}", word_array);
// -------------------------------------------------------------------------
}
/*
run:
Moving elements out of the array...
Extracted Element 1: Alpha
Extracted Element 2: Beta
Extracted Element 3: Gamma
*/
