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Refactor fill_vec function to take a mutable reference to vec

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This commit is contained in:
Rock070 2023-12-17 16:00:15 +08:00
parent 4fd794e942
commit 1c51ad049f
1 changed files with 4 additions and 8 deletions
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12
exercises/06_move_semantics/move_semantics2.rs
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@ -5,22 +5,18 @@
// Execute `rustlings hint move_semantics2` or use the `hint` watch subcommand // Execute `rustlings hint move_semantics2` or use the `hint` watch subcommand
// for a hint. // for a hint.
// I AM NOT DONE
#[test] #[test]
fn main() { fn main() {
let vec0 = vec![22, 44, 66]; let mut vec0 = vec![22, 44, 66];
let mut vec1 = fill_vec(vec0); let vec1 = fill_vec(&mut vec0.clone());
assert_eq!(vec0, vec![22, 44, 66]); assert_eq!(vec0, vec![22, 44, 66]);
assert_eq!(vec1, vec![22, 44, 66, 88]); assert_eq!(vec1, vec![22, 44, 66, 88]);
} }
fn fill_vec(vec: Vec<i32>) -> Vec<i32> { fn fill_vec(vec: &mut Vec<i32>) -> Vec<i32> {
let mut vec = vec;
vec.push(88); vec.push(88);
vec vec.to_vec()
} }