Решение на упр.05 задача 1 от Георги Илиев
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>(iter: I) -> Self
where
I: Iterator<Item = T>,
{
let mut v = Vec::new();
for item in iter {
v.push(item);
}
v
}
}
// итератор по char -> String
impl MyFromIterator<char> for String {
fn my_from_iter<I>(iter: I) -> Self
where
I: Iterator<Item = char>,
{
let mut s = String::new();
for c in iter {
s.push(c);
}
s
}
}
// интератор по (K, V) -> HashMap<K, V>
impl<K, V> MyFromIterator<(K, V)> for HashMap<K, V>
where
K: Eq + Hash,
{
fn my_from_iter<I>(iter: I) -> Self
where
I: Iterator<Item = (K, V)>,
{
let mut map = HashMap::new();
for (k, v) in iter {
map.insert(k, v);
}
map
}
}
fn my_collect<I, C>(iter: I) -> C
where
I: Iterator,
C: MyFromIterator<I::Item>,
{
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 unicode-ident v1.0.22
Compiling quote v1.0.42
Compiling futures-core v0.3.31
Compiling futures-sink v0.3.31
Compiling futures-channel v0.3.31
Compiling memchr v2.7.6
Compiling syn v2.0.110
Compiling pin-project-lite v0.2.16
Compiling futures-task v0.3.31
Compiling futures-io v0.3.31
Compiling slab v0.4.11
Compiling pin-utils v0.1.0
Compiling solution v0.1.0 (/tmp/d20251113-1757769-1gqm0k/solution)
warning: function `my_collect` is never used
--> src/lib.rs:55:4
|
55 | fn my_collect<I, C>(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 16.54s
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
История (3 версии и 0 коментара)
Георги качи решение на 11.11.2025 21:00 (преди 24 дена)
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>(iter: I) -> Self
where
I: Iterator<Item = T>,
{
let mut v = Vec::new();
for item in iter {
v.push(item);
}
v
}
}
+// итератор по char -> String
impl MyFromIterator<char> for String {
fn my_from_iter<I>(iter: I) -> Self
where
I: Iterator<Item = char>,
{
let mut s = String::new();
for c in iter {
s.push(c);
}
s
}
}
+
+fn my_collect<I, C>(iter: I) -> C
+where
+ I: Iterator,
+ C: MyFromIterator<I::Item>,
+{
+ C::my_from_iter(iter)
+}
Георги качи решение на 11.11.2025 21:00 (преди 24 дена)
+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>(iter: I) -> Self
where
I: Iterator<Item = T>,
{
let mut v = Vec::new();
for item in iter {
v.push(item);
}
v
}
}
// итератор по char -> String
impl MyFromIterator<char> for String {
fn my_from_iter<I>(iter: I) -> Self
where
I: Iterator<Item = char>,
{
let mut s = String::new();
for c in iter {
s.push(c);
}
s
}
}
+// интератор по (K, V) -> HashMap<K, V>
+impl<K, V> MyFromIterator<(K, V)> for HashMap<K, V>
+where
+ K: Eq + Hash,
+{
+ fn my_from_iter<I>(iter: I) -> Self
+ where
+ I: Iterator<Item = (K, V)>,
+ {
+ let mut map = HashMap::new();
+ for (k, v) in iter {
+ map.insert(k, v);
+ }
+ map
+ }
+}
fn my_collect<I, C>(iter: I) -> C
where
I: Iterator,
C: MyFromIterator<I::Item>,
{
C::my_from_iter(iter)
}