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This commit is contained in:
Tommi Fish 2024-02-21 09:32:53 +00:00
parent 4cf59332ab
commit 17de7d6f34
7 changed files with 25 additions and 27 deletions

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

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@ -5,13 +5,11 @@
// 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 vec0 = vec![22, 44, 66];
let mut vec1 = fill_vec(vec0); let mut vec1 = fill_vec(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]);

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

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@ -7,13 +7,11 @@
// Execute `rustlings hint move_semantics4` or use the `hint` watch subcommand // Execute `rustlings hint move_semantics4` 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 vec0 = vec![22, 44, 66];
let mut vec1 = fill_vec(vec0); let mut vec1 = fill_vec();
assert_eq!(vec1, vec![22, 44, 66, 88]); assert_eq!(vec1, vec![22, 44, 66, 88]);
} }
@ -21,8 +19,11 @@ fn main() {
// `fill_vec()` no longer takes `vec: Vec<i32>` as argument - don't change this! // `fill_vec()` no longer takes `vec: Vec<i32>` as argument - don't change this!
fn fill_vec() -> Vec<i32> { fn fill_vec() -> Vec<i32> {
// Instead, let's create and fill the Vec in here - how do you do that? // Instead, let's create and fill the Vec in here - how do you do that?
let mut vec = vec; let mut vec = Vec::new();
vec.push(22);
vec.push(44);
vec.push(66);
vec.push(88); vec.push(88);
vec vec

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

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@ -5,24 +5,22 @@
// Execute `rustlings hint move_semantics6` or use the `hint` watch subcommand // Execute `rustlings hint move_semantics6` or use the `hint` watch subcommand
// for a hint. // for a hint.
// I AM NOT DONE
fn main() { fn main() {
let data = "Rust is great!".to_string(); let data = "Rust is great!".to_string();
get_char(data); get_char(&data);
string_uppercase(&data); string_uppercase(data);
} }
// Should not take ownership // Should not take ownership
fn get_char(data: String) -> char { fn get_char(data: &String) -> char {
data.chars().last().unwrap() data.chars().last().unwrap()
} }
// Should take ownership // Should take ownership
fn string_uppercase(mut data: &String) { fn string_uppercase(mut data: String) {
data = &data.to_uppercase(); data = data.to_uppercase();
println!("{}", data); println!("{}", data);
} }

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@ -5,13 +5,13 @@
// Execute `rustlings hint structs1` or use the `hint` watch subcommand for a // Execute `rustlings hint structs1` or use the `hint` watch subcommand for a
// hint. // hint.
// I AM NOT DONE
struct ColorClassicStruct { struct ColorClassicStruct {
// TODO: Something goes here red: u32,
green: u32,
blue: u32,
} }
struct ColorTupleStruct(/* TODO: Something goes here */); struct ColorTupleStruct(i32, i32, i32);
#[derive(Debug)] #[derive(Debug)]
struct UnitLikeStruct; struct UnitLikeStruct;
@ -23,7 +23,11 @@ mod tests {
#[test] #[test]
fn classic_c_structs() { fn classic_c_structs() {
// TODO: Instantiate a classic c struct! // TODO: Instantiate a classic c struct!
// let green = let green = ColorClassicStruct {
red: 0,
green: 255,
blue: 0,
};
assert_eq!(green.red, 0); assert_eq!(green.red, 0);
assert_eq!(green.green, 255); assert_eq!(green.green, 255);
@ -33,7 +37,7 @@ mod tests {
#[test] #[test]
fn tuple_structs() { fn tuple_structs() {
// TODO: Instantiate a tuple struct! // TODO: Instantiate a tuple struct!
// let green = let green = ColorTupleStruct(0,255,0);
assert_eq!(green.0, 0); assert_eq!(green.0, 0);
assert_eq!(green.1, 255); assert_eq!(green.1, 255);
@ -43,7 +47,7 @@ mod tests {
#[test] #[test]
fn unit_structs() { fn unit_structs() {
// TODO: Instantiate a unit-like struct! // TODO: Instantiate a unit-like struct!
// let unit_like_struct = let unit_like_struct = UnitLikeStruct;
let message = format!("{:?}s are fun!", unit_like_struct); let message = format!("{:?}s are fun!", unit_like_struct);
assert_eq!(message, "UnitLikeStructs are fun!"); assert_eq!(message, "UnitLikeStructs are fun!");