move_semantics done
This commit is contained in:
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de06209a13
commit
b01f35fed6
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@ -3,7 +3,6 @@
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// Execute `rustlings hint move_semantics1` or use the `hint` watch subcommand
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// Execute `rustlings hint move_semantics1` or use the `hint` watch subcommand
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// for a hint.
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// for a hint.
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// I AM NOT DONE
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#[test]
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#[test]
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fn main() {
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fn main() {
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@ -15,7 +14,7 @@ fn main() {
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}
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}
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fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
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fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
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let vec = vec;
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let mut vec = vec;
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vec.push(88);
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vec.push(88);
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@ -5,20 +5,19 @@
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// Execute `rustlings hint move_semantics2` or use the `hint` watch subcommand
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// Execute `rustlings hint move_semantics2` or use the `hint` watch subcommand
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// for a hint.
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// for a hint.
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// I AM NOT DONE
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#[test]
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#[test]
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fn main() {
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fn main() {
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let vec0 = vec![22, 44, 66];
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let vec0 = vec![22, 44, 66];
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let mut vec1 = fill_vec(vec0);
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let mut vec1 = fill_vec(&vec0);
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assert_eq!(vec0, vec![22, 44, 66]);
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assert_eq!(vec0, vec![22, 44, 66]);
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assert_eq!(vec1, vec![22, 44, 66, 88]);
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assert_eq!(vec1, vec![22, 44, 66, 88]);
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}
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}
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fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
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fn fill_vec(vec: &Vec<i32>) -> Vec<i32> {
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let mut vec = vec;
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let mut vec = vec.to_vec();
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vec.push(88);
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vec.push(88);
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@ -6,7 +6,6 @@
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// Execute `rustlings hint move_semantics3` or use the `hint` watch subcommand
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// Execute `rustlings hint move_semantics3` or use the `hint` watch subcommand
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// for a hint.
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// for a hint.
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// I AM NOT DONE
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#[test]
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#[test]
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fn main() {
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fn main() {
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@ -17,7 +16,7 @@ fn main() {
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assert_eq!(vec1, vec![22, 44, 66, 88]);
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assert_eq!(vec1, vec![22, 44, 66, 88]);
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}
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}
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fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
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fn fill_vec(mut vec: Vec<i32>) -> Vec<i32> {
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vec.push(88);
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vec.push(88);
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vec
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vec
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@ -7,13 +7,10 @@
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// Execute `rustlings hint move_semantics4` or use the `hint` watch subcommand
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// Execute `rustlings hint move_semantics4` or use the `hint` watch subcommand
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// for a hint.
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// for a hint.
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// I AM NOT DONE
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#[test]
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#[test]
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fn main() {
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fn main() {
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let vec0 = vec![22, 44, 66];
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let mut vec1 = fill_vec();
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let mut vec1 = fill_vec(vec0);
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assert_eq!(vec1, vec![22, 44, 66, 88]);
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assert_eq!(vec1, vec![22, 44, 66, 88]);
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}
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}
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@ -21,7 +18,7 @@ fn main() {
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// `fill_vec()` no longer takes `vec: Vec<i32>` as argument - don't change this!
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// `fill_vec()` no longer takes `vec: Vec<i32>` as argument - don't change this!
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fn fill_vec() -> Vec<i32> {
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fn fill_vec() -> Vec<i32> {
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// Instead, let's create and fill the Vec in here - how do you do that?
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// Instead, let's create and fill the Vec in here - how do you do that?
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let mut vec = vec;
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let mut vec = vec![22, 44, 66];
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vec.push(88);
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vec.push(88);
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@ -6,14 +6,13 @@
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// Execute `rustlings hint move_semantics5` or use the `hint` watch subcommand
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// Execute `rustlings hint move_semantics5` or use the `hint` watch subcommand
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// for a hint.
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// for a hint.
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// I AM NOT DONE
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#[test]
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#[test]
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fn main() {
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fn main() {
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let mut x = 100;
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let mut x = 100;
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let y = &mut x;
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let y = &mut x;
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let z = &mut x;
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*y += 100;
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*y += 100;
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let z = &mut x;
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*z += 1000;
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*z += 1000;
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assert_eq!(x, 1200);
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assert_eq!(x, 1200);
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}
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}
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@ -5,24 +5,23 @@
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// Execute `rustlings hint move_semantics6` or use the `hint` watch subcommand
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// Execute `rustlings hint move_semantics6` or use the `hint` watch subcommand
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// for a hint.
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// for a hint.
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// I AM NOT DONE
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fn main() {
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fn main() {
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let data = "Rust is great!".to_string();
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let data = "Rust is great!".to_string();
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get_char(data);
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get_char(&data);
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string_uppercase(&data);
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string_uppercase(data);
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}
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}
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// Should not take ownership
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// Should not take ownership
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fn get_char(data: String) -> char {
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fn get_char(data: &String) -> char {
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data.chars().last().unwrap()
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data.chars().last().unwrap()
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}
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}
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// Should take ownership
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// Should take ownership
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fn string_uppercase(mut data: &String) {
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fn string_uppercase(mut data: String) {
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data = &data.to_uppercase();
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data = data.to_uppercase();
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println!("{}", data);
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println!("{}", data);
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}
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}
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