Решение на упр.03 задача 2 от Пламен Колев
Резултати
- 1 точка от тестове
- 0 бонус точки
- 1 точка общо
- 1 успешни тест(а)
- 0 неуспешни тест(а)
Код
#[derive(Debug)]
enum VehicleKind {
Car,
Truck,
Motorcycle,
Bicycle,
}
#[derive(Debug)]
struct Vehicle {
kind: VehicleKind,
fuel: f64,
distance: f64,
}
#[derive(Debug)]
#[allow(dead_code)]
enum DriveError {
NotEnoughFuel { needed: f64, have: f64 }
}
impl Vehicle {
fn new(kind: VehicleKind, fuel: f64) -> Self {
Vehicle {
kind,
fuel,
distance: 0.0,
}
}
fn drive(&mut self, km: f64) -> Result<(), DriveError> {
let fuel_consumption = match self.kind {
VehicleKind::Car => 0.07,
VehicleKind::Truck => 0.15,
VehicleKind::Motorcycle => 0.05,
VehicleKind::Bicycle => 0.0,
};
let needed_fuel = fuel_consumption * km;
if needed_fuel > self.fuel {
Err(DriveError::NotEnoughFuel { needed: needed_fuel, have: self.fuel })
} else {
self.fuel -= needed_fuel;
self.distance += km;
Ok(())
}
}
}
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-sink v0.3.31
Compiling futures-core v0.3.31
Compiling futures-channel v0.3.31
Compiling pin-project-lite v0.2.16
Compiling pin-utils v0.1.0
Compiling futures-task v0.3.31
Compiling syn v2.0.108
Compiling memchr v2.7.6
Compiling futures-io v0.3.31
Compiling slab v0.4.11
Compiling solution v0.1.0 (/tmp/d20251030-1757769-1rapfxc/solution)
warning: enum `VehicleKind` is never used
--> src/lib.rs:2:6
|
2 | enum VehicleKind {
| ^^^^^^^^^^^
|
= note: `#[warn(dead_code)]` on by default
warning: struct `Vehicle` is never constructed
--> src/lib.rs:10:8
|
10 | struct Vehicle {
| ^^^^^^^
warning: associated items `new` and `drive` are never used
--> src/lib.rs:25:8
|
23 | impl Vehicle {
| ------------ associated items in this implementation
24 |
25 | fn new(kind: VehicleKind, fuel: f64) -> Self {
| ^^^
...
33 | fn drive(&mut self, km: f64) -> Result<(), DriveError> {
| ^^^^^
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: variants `Truck`, `Motorcycle`, and `Bicycle` are never constructed
--> tests/../src/lib.rs:4:5
|
2 | enum VehicleKind {
| ----------- variants in this enum
3 | Car,
4 | Truck,
| ^^^^^
5 | Motorcycle,
| ^^^^^^^^^^
6 | Bicycle,
| ^^^^^^^
|
= note: `VehicleKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
= note: `#[warn(dead_code)]` on by default
warning: `solution` (test "solution_test") generated 1 warning
Finished `test` profile [unoptimized + debuginfo] target(s) in 8.49s
Running tests/solution_test.rs (target/debug/deps/solution_test-bfd50394249726db)
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