Решение на упр.03 задача 3 от Божидар Виденов
Към профила на Божидар Виденов
Резултати
- 2 точки от тестове
- 0 бонус точки
- 2 точки общо
- 2 успешни тест(а)
- 0 неуспешни тест(а)
Код
use std::{collections::HashMap, usize};
pub enum Event {
Login {
user: String,
timestamp: u64,
},
Logout {
user: String,
timestamp: u64,
},
Purchase {
user: String,
item: String,
amount: f64,
timestamp: u64,
},
Error {
code: i32,
message: String,
timestamp: u64,
},
}
impl Event {}
pub struct EventLog {
events: Vec<Event>,
}
impl EventLog {
fn new() -> EventLog {
Self { events: vec![] }
}
pub fn add_event(&mut self, event: Event) {
self.events.push(event);
}
pub fn user_spent(&self, user: &str) -> f64 {
self.events
.iter()
.filter_map(|e| match e {
Event::Purchase {
user: e_user,
amount: price,
..
} if user == e_user => Some(price),
_ => None,
})
.sum()
}
fn event_key_to_str(e: &Event) -> String {
return match e {
Event::Login { .. } => String::from("Login"),
Event::Error { .. } => String::from("Error"),
Event::Logout { .. } => String::from("Logout"),
Event::Purchase { .. } => String::from("Purchase"),
};
}
fn filter_events(&self, user: Option<&str>, after: Option<u64>) -> Vec<&Event> {
let user_v = user.unwrap_or_else(|| return "");
let after_v = after.unwrap_or_else(|| return 0);
return self
.events
.iter()
.filter(|e| match e {
Event::Login {
user: user_to_check,
timestamp: timestamp_to_check,
} if (user_v == "" || user_to_check == user_v)
&& (*timestamp_to_check > after_v) =>
{
true
}
Event::Error {
timestamp: timestamp_to_check,
..
} if *timestamp_to_check > after_v && user_v == "" => true,
Event::Logout {
user: user_to_check,
timestamp: timestamp_to_check,
} if (user_v == "" || user_to_check == user_v)
&& (*timestamp_to_check > after_v) =>
{
true
}
Event::Purchase {
user: user_to_check,
timestamp: timestamp_to_check,
..
} if (user_v == "" || user_to_check == user_v)
&& (*timestamp_to_check > after_v) =>
{
true
}
_ => false,
})
.collect();
}
pub fn summaries_by_type(&self) -> HashMap<String, usize> {
let mut summary: HashMap<String, usize> = HashMap::new();
for event in self.events.iter() {
let event_str = &EventLog::event_key_to_str(event);
match summary.get(event_str) {
Some(rec) => _ = summary.insert(event_str.to_string(), rec + 1),
None => _ = summary.insert(event_str.to_string(), 1),
}
}
summary
}
}
Лог от изпълнението
Updating crates.io index
Locking 17 packages to latest compatible versions
Compiling proc-macro2 v1.0.103
Compiling quote v1.0.41
Compiling unicode-ident v1.0.22
Compiling futures-core v0.3.31
Compiling futures-sink v0.3.31
Compiling futures-channel v0.3.31
Compiling pin-utils v0.1.0
Compiling memchr v2.7.6
Compiling syn v2.0.108
Compiling slab v0.4.11
Compiling futures-task v0.3.31
Compiling pin-project-lite v0.2.16
Compiling futures-io v0.3.31
Compiling solution v0.1.0 (/tmp/d20251030-1757769-1wlvp9u/solution)
warning: associated items `new` and `filter_events` are never used
--> src/lib.rs:33:8
|
32 | impl EventLog {
| ------------- associated items in this implementation
33 | fn new() -> EventLog {
| ^^^
...
64 | fn filter_events(&self, user: Option<&str>, after: Option<u64>) -> Vec<&Event> {
| ^^^^^^^^^^^^^
|
= 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 8.82s
Running tests/solution_test.rs (target/debug/deps/solution_test-bfd50394249726db)
running 2 tests
test solution_test::test_empty ... ok
test solution_test::test_basic ... ok
test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s