move_semantics done

This commit is contained in:
David E. Perez Negron R. 2023-11-01 23:35:19 -06:00
parent de06209a13
commit b01f35fed6
6 changed files with 13 additions and 21 deletions

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@ -3,7 +3,6 @@
// Execute `rustlings hint move_semantics1` or use the `hint` watch subcommand
// for a hint.
// I AM NOT DONE
#[test]
fn main() {
@ -15,7 +14,7 @@ fn main() {
}
fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
let vec = vec;
let mut vec = vec;
vec.push(88);

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@ -5,20 +5,19 @@
// Execute `rustlings hint move_semantics2` or use the `hint` watch subcommand
// for a hint.
// I AM NOT DONE
#[test]
fn main() {
let vec0 = vec![22, 44, 66];
let mut vec1 = fill_vec(vec0);
let mut vec1 = fill_vec(&vec0);
assert_eq!(vec0, vec![22, 44, 66]);
assert_eq!(vec1, vec![22, 44, 66, 88]);
}
fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
let mut vec = vec;
fn fill_vec(vec: &Vec<i32>) -> Vec<i32> {
let mut vec = vec.to_vec();
vec.push(88);

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@ -6,7 +6,6 @@
// Execute `rustlings hint move_semantics3` or use the `hint` watch subcommand
// for a hint.
// I AM NOT DONE
#[test]
fn main() {
@ -17,7 +16,7 @@ fn main() {
assert_eq!(vec1, vec![22, 44, 66, 88]);
}
fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
fn fill_vec(mut vec: Vec<i32>) -> Vec<i32> {
vec.push(88);
vec

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@ -7,13 +7,10 @@
// Execute `rustlings hint move_semantics4` or use the `hint` watch subcommand
// for a hint.
// I AM NOT DONE
#[test]
fn main() {
let vec0 = vec![22, 44, 66];
let mut vec1 = fill_vec(vec0);
let mut vec1 = fill_vec();
assert_eq!(vec1, vec![22, 44, 66, 88]);
}
@ -21,7 +18,7 @@ fn main() {
// `fill_vec()` no longer takes `vec: Vec<i32>` as argument - don't change this!
fn fill_vec() -> Vec<i32> {
// Instead, let's create and fill the Vec in here - how do you do that?
let mut vec = vec;
let mut vec = vec![22, 44, 66];
vec.push(88);

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@ -6,14 +6,13 @@
// Execute `rustlings hint move_semantics5` or use the `hint` watch subcommand
// for a hint.
// I AM NOT DONE
#[test]
fn main() {
let mut x = 100;
let y = &mut x;
let z = &mut x;
*y += 100;
let z = &mut x;
*z += 1000;
assert_eq!(x, 1200);
}

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@ -5,24 +5,23 @@
// Execute `rustlings hint move_semantics6` or use the `hint` watch subcommand
// for a hint.
// I AM NOT DONE
fn main() {
let data = "Rust is great!".to_string();
get_char(data);
get_char(&data);
string_uppercase(&data);
string_uppercase(data);
}
// Should not take ownership
fn get_char(data: String) -> char {
fn get_char(data: &String) -> char {
data.chars().last().unwrap()
}
// Should take ownership
fn string_uppercase(mut data: &String) {
data = &data.to_uppercase();
fn string_uppercase(mut data: String) {
data = data.to_uppercase();
println!("{}", data);
}