rustlings-solutions/exercises/move_semantics/move_semantics4.rs

34 lines
745 B
Rust

// move_semantics4.rs
//
// Refactor this code so that instead of passing `vec0` into the `fill_vec`
// function, the Vector gets created in the function itself and passed back to
// the main function.
//
// Execute `rustlings hint move_semantics4` or use the `hint` watch subcommand
// for a hint.
// I AM NOT DONE
fn main() {
let vec0 = Vec::new();
let mut vec1 = fill_vec(vec0);
println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1);
vec1.push(88);
println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1);
}
// `fill_vec()` no longer takes `vec: Vec<i32>` as argument
fn fill_vec() -> Vec<i32> {
let mut vec = vec;
vec.push(22);
vec.push(44);
vec.push(66);
vec
}