Completed all move semantics without checking sol.

This commit is contained in:
Max Boewer 2022-12-04 21:58:18 +01:00
parent 1fba13edf6
commit f45c56d646
6 changed files with 17 additions and 18 deletions

View File

@ -1,12 +1,11 @@
// move_semantics1.rs // move_semantics1.rs
// Execute `rustlings hint move_semantics1` or use the `hint` watch subcommand for a hint. // Execute `rustlings hint move_semantics1` or use the `hint` watch subcommand for a hint.
// I AM NOT DONE
fn main() { fn main() {
let vec0 = Vec::new(); let vec0 = Vec::new();
let vec1 = fill_vec(vec0); let mut vec1 = fill_vec(vec0);
println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1); println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1);

View File

@ -2,12 +2,11 @@
// Make me compile without changing line 13 or moving line 10! // Make me compile without changing line 13 or moving line 10!
// Execute `rustlings hint move_semantics2` or use the `hint` watch subcommand for a hint. // Execute `rustlings hint move_semantics2` or use the `hint` watch subcommand for a hint.
// I AM NOT DONE
fn main() { fn main() {
let vec0 = Vec::new(); let vec0: Vec<i32> = Vec::new();
let vec2 = Vec::new();
let mut vec1 = fill_vec(vec0); let mut vec1 = fill_vec(vec2);
// Do not change the following line! // Do not change the following line!
println!("{} has length {} content `{:?}`", "vec0", vec0.len(), vec0); println!("{} has length {} content `{:?}`", "vec0", vec0.len(), vec0);

View File

@ -3,7 +3,7 @@
// (no lines with multiple semicolons necessary!) // (no lines with multiple semicolons necessary!)
// Execute `rustlings hint move_semantics3` or use the `hint` watch subcommand for a hint. // Execute `rustlings hint move_semantics3` or use the `hint` watch subcommand for a hint.
// I AM NOT DONE
fn main() { fn main() {
let vec0 = Vec::new(); let vec0 = Vec::new();
@ -17,7 +17,7 @@ fn main() {
println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1); println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1);
} }
fn fill_vec(vec: Vec<i32>) -> Vec<i32> { fn fill_vec(mut vec: Vec<i32>) -> Vec<i32> {
vec.push(22); vec.push(22);
vec.push(44); vec.push(44);
vec.push(66); vec.push(66);

View File

@ -4,7 +4,7 @@
// function. // function.
// Execute `rustlings hint move_semantics4` or use the `hint` watch subcommand for a hint. // Execute `rustlings hint move_semantics4` or use the `hint` watch subcommand for a hint.
// I AM NOT DONE
fn main() { fn main() {
let vec0 = Vec::new(); let vec0 = Vec::new();
@ -19,7 +19,7 @@ fn main() {
} }
// `fill_vec()` no longer takes `vec: Vec<i32>` as argument // `fill_vec()` no longer takes `vec: Vec<i32>` as argument
fn fill_vec() -> Vec<i32> { fn fill_vec(vec: Vec<u32>) -> Vec<u32> {
let mut vec = vec; let mut vec = vec;
vec.push(22); vec.push(22);

View File

@ -3,13 +3,14 @@
// adding, changing or removing any of them. // adding, changing or removing any of them.
// Execute `rustlings hint move_semantics5` or use the `hint` watch subcommand for a hint. // Execute `rustlings hint move_semantics5` or use the `hint` watch subcommand for a hint.
// I AM NOT DONE
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);
} }

View File

@ -2,24 +2,24 @@
// Execute `rustlings hint move_semantics6` or use the `hint` watch subcommand for a hint. // Execute `rustlings hint move_semantics6` or use the `hint` watch subcommand for a hint.
// You can't change anything except adding or removing references. // You can't change anything except adding or removing references.
// 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);
} }