Решение на упр.02 задача 3 от Илиян Свечев

Обратно към всички решения

Към профила на Илиян Свечев

Код

fn split_string_at(s: String, n: usize) -> (String, String) {

let s1 = &s[0..n];

let s2 = &s[n..];

(s1.to_string(), s2.to_string())

}

fn split_slice_at(s: &str, n: usize) -> (&str, &str) {

let s1 = &s[0..n];

let s2 = &s[n..];

(s1, s2)

}

// трябва да връщаме &str вместо &mut str защото не може да имаме

// две различни mutable референции към една променлива едновременно

fn split_slice_mut_at(s: &mut str, n: usize) -> (&str, &str) {

let s1 = &s[0..n];

let s2 = &s[n..];

(s1, s2)

}

Лог от изпълнението

Updating crates.io index
     Locking 17 packages to latest compatible versions
   Compiling proc-macro2 v1.0.102
   Compiling unicode-ident v1.0.20
   Compiling quote v1.0.41
   Compiling futures-sink v0.3.31
   Compiling futures-core v0.3.31
   Compiling futures-channel v0.3.31
   Compiling pin-project-lite v0.2.16
   Compiling futures-io v0.3.31
   Compiling syn v2.0.108
   Compiling slab v0.4.11
   Compiling memchr v2.7.6
   Compiling futures-task v0.3.31
   Compiling pin-utils v0.1.0
   Compiling solution v0.1.0 (/tmp/d20251023-1757769-1pwb30n/solution)
warning: function `split_string_at` is never used
 --> src/lib.rs:1:4
  |
1 | fn split_string_at(s: String, n: usize) -> (String, String) {
  |    ^^^^^^^^^^^^^^^
  |
  = note: `#[warn(dead_code)]` on by default

warning: function `split_slice_at` is never used
 --> src/lib.rs:7:4
  |
7 | fn split_slice_at(s: &str, n: usize) -> (&str, &str) {
  |    ^^^^^^^^^^^^^^

warning: function `split_slice_mut_at` is never used
  --> src/lib.rs:15:4
   |
15 | fn split_slice_mut_at(s: &mut str, n: usize) -> (&str, &str) {
   |    ^^^^^^^^^^^^^^^^^^

warning: `solution` (lib) generated 3 warnings
   Compiling futures-macro v0.3.31
   Compiling futures-util v0.3.31
   Compiling futures-executor v0.3.31
   Compiling futures v0.3.31
warning: function `split_slice_mut_at` is never used
  --> tests/../src/lib.rs:15:4
   |
15 | fn split_slice_mut_at(s: &mut str, n: usize) -> (&str, &str) {
   |    ^^^^^^^^^^^^^^^^^^
   |
   = note: `#[warn(dead_code)]` on by default

warning: `solution` (test "solution_test") generated 1 warning
    Finished `test` profile [unoptimized + debuginfo] target(s) in 8.15s
     Running tests/solution_test.rs (target/debug/deps/solution_test-fc1324dc0157cdc7)

running 1 test
test solution_test::test_basic ... ok

test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s

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