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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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// for a hint.
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// I AM NOT DONE
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#[test]
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fn main() {
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@ -15,7 +14,7 @@ fn main() {
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}
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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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@ -5,13 +5,11 @@
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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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// I AM NOT DONE
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#[test]
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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(vec0);
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let mut vec1 = fill_vec(vec0.clone());
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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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@ -6,7 +6,6 @@
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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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// I AM NOT DONE
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#[test]
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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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}
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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
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@ -7,13 +7,11 @@
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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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// I AM NOT DONE
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#[test]
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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(vec0);
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let mut vec1 = fill_vec();
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assert_eq!(vec1, vec![22, 44, 66, 88]);
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}
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@ -21,8 +19,11 @@ fn main() {
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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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// 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::new();
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vec.push(22);
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vec.push(44);
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vec.push(66);
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vec.push(88);
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vec
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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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// for a hint.
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// I AM NOT DONE
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#[test]
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fn main() {
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let mut x = 100;
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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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let z = &mut x;
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*z += 1000;
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assert_eq!(x, 1200);
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}
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@ -5,24 +5,22 @@
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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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// I AM NOT DONE
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fn main() {
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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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// 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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}
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// Should take ownership
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fn string_uppercase(mut data: &String) {
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data = &data.to_uppercase();
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fn string_uppercase(mut data: String) {
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data = data.to_uppercase();
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println!("{}", data);
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}
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@ -5,13 +5,13 @@
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// Execute `rustlings hint structs1` or use the `hint` watch subcommand for a
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// hint.
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// I AM NOT DONE
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struct ColorClassicStruct {
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// TODO: Something goes here
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red: u32,
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green: u32,
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blue: u32,
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}
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struct ColorTupleStruct(/* TODO: Something goes here */);
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struct ColorTupleStruct(i32, i32, i32);
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#[derive(Debug)]
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struct UnitLikeStruct;
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@ -23,7 +23,11 @@ mod tests {
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#[test]
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fn classic_c_structs() {
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// TODO: Instantiate a classic c struct!
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// let green =
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let green = ColorClassicStruct {
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red: 0,
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green: 255,
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blue: 0,
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};
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assert_eq!(green.red, 0);
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assert_eq!(green.green, 255);
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@ -33,7 +37,7 @@ mod tests {
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#[test]
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fn tuple_structs() {
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// TODO: Instantiate a tuple struct!
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// let green =
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let green = ColorTupleStruct(0,255,0);
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assert_eq!(green.0, 0);
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assert_eq!(green.1, 255);
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@ -43,7 +47,7 @@ mod tests {
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#[test]
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fn unit_structs() {
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// TODO: Instantiate a unit-like struct!
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// let unit_like_struct =
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let unit_like_struct = UnitLikeStruct;
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let message = format!("{:?}s are fun!", unit_like_struct);
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assert_eq!(message, "UnitLikeStructs are fun!");
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