Решение на упр.03 задача 2 от Мариян Момчилов
Към профила на Мариян Момчилов
Резултати
- 1 точка от тестове
- 0 бонус точки
- 1 точка общо
- 1 успешни тест(а)
- 0 неуспешни тест(а)
Код
pub enum VehicleKind {
Car,
Truck,
Motorcycle,
Bicycle,
}
pub struct Vehicle {
kind: VehicleKind,
fuel: f64,
distance: f64,
}
pub enum DriveError {
NotEnoughFuel { needed: f64, have: f64 },
}
impl Vehicle {
pub fn new(kind: VehicleKind, fuel: f64) -> Self {
Vehicle {
kind,
fuel,
distance: 0.0,
}
}
pub fn drive(&mut self, km: f64) -> Result<(), DriveError> {
let fuel_cost = self.estimate_fuel_cost(km);
if fuel_cost > self.fuel {
return Err(DriveError::NotEnoughFuel {
needed: fuel_cost,
have: self.fuel,
});
}
self.distance += km;
self.fuel -= fuel_cost;
Ok(())
}
fn estimate_fuel_cost(&self, km: f64) -> f64 {
match self.kind {
VehicleKind::Car => km * 0.07,
VehicleKind::Truck => km * 0.15,
VehicleKind::Motorcycle => km * 0.05,
VehicleKind::Bicycle => 0.0,
}
}
}
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 pin-project-lite v0.2.16
Compiling slab v0.4.11
Compiling futures-io v0.3.31
Compiling memchr v2.7.6
Compiling pin-utils v0.1.0
Compiling solution v0.1.0 (/tmp/d20251030-1757769-qu75z9/solution)
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:3:5
|
1 | pub enum VehicleKind {
| ----------- variants in this enum
2 | Car,
3 | Truck,
| ^^^^^
4 | Motorcycle,
| ^^^^^^^^^^
5 | Bicycle,
| ^^^^^^^
|
= note: `#[warn(dead_code)]` on by default
warning: fields `needed` and `have` are never read
--> tests/../src/lib.rs:15:21
|
15 | NotEnoughFuel { needed: f64, have: f64 },
| ------------- ^^^^^^ ^^^^
| |
| fields in this variant
warning: `solution` (test "solution_test") generated 2 warnings
Finished `test` profile [unoptimized + debuginfo] target(s) in 10.15s
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