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Move semantics 5&7

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This commit is contained in:
jojimanos 2022-09-14 22:35:41 +03:00
parent 316a297fbc
commit 9750ddaf6a
2 changed files with 6 additions and 10 deletions
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4
exercises/move_semantics/move_semantics5.rs
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@ -3,13 +3,11 @@
// 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);
} }

12
exercises/move_semantics/move_semantics6.rs
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@ -2,24 +2,22 @@
// 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);
} }