Решение на упр.05 задача 1 от Георги Стоянов
Резултати
- 1 точка от тестове
- 0 бонус точки
- 1 точка общо
- 1 успешни тест(а)
- 0 неуспешни тест(а)
Код
use std::collections::HashMap;
use std::hash::Hash;
pub trait MyFromIterator<A> {
fn my_from_iter<I>(iter: I) -> Self
where
I: Iterator<Item = A>;
}
// итератор по T -> Vec<T>
impl<T> MyFromIterator<T> for Vec<T> {
fn my_from_iter<I: Iterator<Item = T>>(mut iter: I) -> Self
{
let mut vec = Vec::new();
while let Some(el) = iter.next() {
vec.push(el);
}
vec
}
}
// итератор по char -> String
impl MyFromIterator<char> for String {
fn my_from_iter<I: Iterator<Item = char>>(mut iter: I) -> Self
{
let mut str = String::new();
while let Some(ch) = iter.next(){
str.push(ch);
}
str
}
}
// интератор по (K, V) -> HashMap<K, V>
impl<K: Eq + Hash, V> MyFromIterator<(K, V)> for HashMap<K, V> {
fn my_from_iter<I: Iterator<Item = (K, V)>>( mut iter: I) -> Self
{
let mut res = HashMap::new();
while let Some((k, v)) = iter.next() {
res.insert(k, v);
}
res
}
}
fn my_collect<C: MyFromIterator<I::Item>, I:Iterator>(iter: I) -> C
{
C::my_from_iter(iter)
}
Лог от изпълнението
Updating crates.io index
Locking 17 packages to latest compatible versions
Compiling proc-macro2 v1.0.103
Compiling quote v1.0.42
Compiling unicode-ident v1.0.22
Compiling futures-sink v0.3.31
Compiling futures-core v0.3.31
Compiling futures-channel v0.3.31
Compiling futures-task v0.3.31
Compiling slab v0.4.11
Compiling futures-io v0.3.31
Compiling syn v2.0.110
Compiling pin-utils v0.1.0
Compiling memchr v2.7.6
Compiling pin-project-lite v0.2.16
Compiling solution v0.1.0 (/tmp/d20251113-1757769-snzrcn/solution)
warning: function `my_collect` is never used
--> src/lib.rs:46:4
|
46 | fn my_collect<C: MyFromIterator<I::Item>, I:Iterator>(iter: I) -> C
| ^^^^^^^^^^
|
= note: `#[warn(dead_code)]` on by default
warning: `solution` (lib) generated 1 warning
Compiling futures-macro v0.3.31
Compiling futures-util v0.3.31
Compiling futures-executor v0.3.31
Compiling futures v0.3.31
Finished `test` profile [unoptimized + debuginfo] target(s) in 8.49s
Running tests/solution_test.rs (target/debug/deps/solution_test-f75e629a1d90e17c)
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