Решение на упр.03 задача 3 от Борис Великов
Резултати
- 1 точка от тестове
- 0 бонус точки
- 1 точка общо
- 1 успешни тест(а)
- 1 неуспешни тест(а)
Код
use std::collections::HashMap;
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 }
}
struct EventLog{
events: Vec<Event>
}
impl EventLog{
fn new() -> EventLog {
EventLog { events: Vec::new() }
}
fn add_event(&mut self, event: Event){
self.events.push(event);
}
fn user_spent(&self, user: &str) -> f64 {
let mut sum : f64 = 0.0;
for ev in &self.events {
match ev {
Event::Purchase { user: u,item: _, amount: a,timestamp: _ } =>
if(user == u) {sum+=a;}
_ => {}
}
}
sum
}
fn summaries_by_type(&self) -> HashMap<String, usize> {
let mut map: HashMap<String, usize> = HashMap::new();
map.insert("Login".to_string(),0);
map.insert("Logout".to_string(),0);
map.insert("Purchase".to_string(),0);
map.insert("Error".to_string(),0);
for ev in &self.events {
match ev {
Event::Login { .. } => *map.get_mut("Login").unwrap() += 1,
Event::Logout { .. } => *map.get_mut("Logout").unwrap() += 1,
Event::Purchase { .. } => *map.get_mut("Purchase").unwrap() += 1,
Event::Error { .. } => *map.get_mut("Error").unwrap() += 1,
}
}
map
}
fn filter_events(&self, user: Option<&str>, after: Option<u64>) -> Vec<&Event> {
let mut v: Vec<&Event> = Vec::new();
match user {
Some(u) => {
for ev in &self.events {
match ev {
Event::Login { user: ev_user, .. }
| Event::Logout { user: ev_user, .. }
| Event::Purchase { user: ev_user, .. } => {
if ev_user == u {
v.push(ev);
}
}
Event::Error { .. } => {}
}
}
}
None => {
for ev in &self.events {
match ev {
Event::Error { .. } => {}
_ => v.push(ev),
}
}
}
}
if let Some(t) = after {
let mut result: Vec<&Event> = Vec::new();
for ev in &v {
match ev {
Event::Login { timestamp, .. }
| Event::Logout { timestamp, .. }
| Event::Purchase { timestamp, .. }
| Event::Error { timestamp, .. } => {
if *timestamp > t {
result.push(ev);
}
}
}
}
return result;
}
v
}
}
fn main(){
}
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 futures-task v0.3.31
Compiling syn v2.0.108
Compiling futures-io v0.3.31
Compiling slab v0.4.11
Compiling pin-utils v0.1.0
Compiling pin-project-lite v0.2.16
Compiling memchr v2.7.6
Compiling solution v0.1.0 (/tmp/d20251030-1757769-rgzrf9/solution)
warning: unnecessary parentheses around `if` condition
--> src/lib.rs:27:19
|
27 | if(user == u) {sum+=a;}
| ^ ^
|
= note: `#[warn(unused_parens)]` on by default
help: remove these parentheses
|
27 - if(user == u) {sum+=a;}
27 + if user == u {sum+=a;}
|
warning: enum `Event` is never used
--> src/lib.rs:3:6
|
3 | enum Event{
| ^^^^^
|
= note: `#[warn(dead_code)]` on by default
warning: struct `EventLog` is never constructed
--> src/lib.rs:10:8
|
10 | struct EventLog{
| ^^^^^^^^
warning: associated items `new`, `add_event`, `user_spent`, `summaries_by_type`, and `filter_events` are never used
--> src/lib.rs:15:8
|
14 | impl EventLog{
| ------------- associated items in this implementation
15 | fn new() -> EventLog {
| ^^^
...
19 | fn add_event(&mut self, event: Event){
| ^^^^^^^^^
...
22 | fn user_spent(&self, user: &str) -> f64 {
| ^^^^^^^^^^
...
33 | fn summaries_by_type(&self) -> HashMap<String, usize> {
| ^^^^^^^^^^^^^^^^^
...
50 | fn filter_events(&self, user: Option<&str>, after: Option<u64>) -> Vec<&Event> {
| ^^^^^^^^^^^^^
warning: function `main` is never used
--> src/lib.rs:99:4
|
99 | fn main(){
| ^^^^
warning: `solution` (lib) generated 5 warnings (run `cargo fix --lib -p solution` to apply 1 suggestion)
Compiling futures-macro v0.3.31
Compiling futures-util v0.3.31
Compiling futures-executor v0.3.31
Compiling futures v0.3.31
warning: unnecessary parentheses around `if` condition
--> tests/../src/lib.rs:27:19
|
27 | if(user == u) {sum+=a;}
| ^ ^
|
= note: `#[warn(unused_parens)]` on by default
help: remove these parentheses
|
27 - if(user == u) {sum+=a;}
27 + if user == u {sum+=a;}
|
warning: function `main` is never used
--> tests/../src/lib.rs:99:4
|
99 | fn main(){
| ^^^^
|
= note: `#[warn(dead_code)]` on by default
warning: `solution` (test "solution_test") generated 2 warnings (run `cargo fix --test "solution_test"` to apply 1 suggestion)
Finished `test` profile [unoptimized + debuginfo] target(s) in 8.65s
Running tests/solution_test.rs (target/debug/deps/solution_test-bfd50394249726db)
running 2 tests
test solution_test::test_basic ... ok
test solution_test::test_empty ... FAILED
failures:
---- solution_test::test_empty stdout ----
thread 'solution_test::test_empty' panicked at tests/solution_test.rs:13:5:
assertion `left == right` failed
left: {"Login": 0, "Error": 0, "Purchase": 0, "Logout": 0}
right: {}
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
failures:
solution_test::test_empty
test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
error: test failed, to rerun pass `--test solution_test`
История (2 версии и 0 коментара)
Борис качи решение на 28.10.2025 14:24 (преди около 1 месеца)
use std::collections::HashMap;
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 }
}
struct EventLog{
events: Vec<Event>
}
impl EventLog{
fn new() -> EventLog {
EventLog { events: Vec::new() }
}
fn add_event(&mut self, event: Event){
self.events.push(event);
}
fn user_spent(&self, user: &str) -> f64 {
let mut sum : f64 = 0.0;
for ev in &self.events {
match ev {
Event::Purchase { user: u,item: _, amount: a,timestamp: _ } =>
if(user == u) {sum+=a;}
_ => {}
}
}
sum
}
+ fn summaries_by_type(&self) -> HashMap<String, usize> {
+ let mut map: HashMap<String, usize> = HashMap::new();
+ map.insert("Login".to_string(),0);
+ map.insert("Logout".to_string(),0);
+ map.insert("Purchase".to_string(),0);
+ map.insert("Error".to_string(),0);
+ for ev in &self.events {
+ match ev {
+ Event::Login { .. } => *map.get_mut("Login").unwrap() += 1,
+ Event::Logout { .. } => *map.get_mut("Logout").unwrap() += 1,
+ Event::Purchase { .. } => *map.get_mut("Purchase").unwrap() += 1,
+ Event::Error { .. } => *map.get_mut("Error").unwrap() += 1,
+ }
+ }
+ map
+ }
+
fn filter_events(&self, user: Option<&str>, after: Option<u64>) -> Vec<&Event> {
let mut v: Vec<&Event> = Vec::new();
-
- // --- 1️⃣ Филтрираме по user ---
match user {
Some(u) => {
for ev in &self.events {
match ev {
Event::Login { user: ev_user, .. }
| Event::Logout { user: ev_user, .. }
| Event::Purchase { user: ev_user, .. } => {
if ev_user == u {
v.push(ev);
}
}
Event::Error { .. } => {}
}
}
}
None => {
for ev in &self.events {
match ev {
Event::Error { .. } => {}
_ => v.push(ev),
}
}
}
}
if let Some(t) = after {
let mut result: Vec<&Event> = Vec::new();
for ev in &v {
match ev {
Event::Login { timestamp, .. }
| Event::Logout { timestamp, .. }
| Event::Purchase { timestamp, .. }
| Event::Error { timestamp, .. } => {
if *timestamp > t {
result.push(ev);
}
}
}
}
return result;
}
-
v
}
}
fn main(){
}