Решение на упр.03 задача 2 от Борил Василев
Резултати
- 1 точка от тестове
- 0 бонус точки
- 1 точка общо
- 1 успешни тест(а)
- 0 неуспешни тест(а)
Код
enum VehicleKind
{
Car,
Truck,
Motorcycle,
Bicycle,
}
struct Vehicle
{
kind: VehicleKind,
fuel: f64,
distance: f64,
}
enum DriveError
{
NotEnoughFuel { needed: f64, have: f64, }
}
impl Vehicle
{
fn new(kind: VehicleKind, fuel: f64) -> Self
{
return Vehicle
{
kind,
fuel,
distance: 0.0,
};
}
fn drive(&mut self, km: f64) -> Result<(), DriveError>
{
let l_per_km = match self.kind
{
VehicleKind::Car => 0.07,
VehicleKind::Truck => 0.15,
VehicleKind::Motorcycle => 0.05,
VehicleKind::Bicycle => 0.0,
};
let needed = l_per_km * km;
if self.fuel >= needed
{
self.fuel -= needed;
self.distance += km;
return Ok(());
}
else
{
return Err(DriveError::NotEnoughFuel { needed: needed, have: self.fuel, });
}
}
}
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 v1.0.41
Compiling futures-core v0.3.31
Compiling futures-sink v0.3.31
Compiling futures-channel v0.3.31
Compiling futures-io v0.3.31
Compiling futures-task v0.3.31
Compiling syn v2.0.108
Compiling memchr v2.7.6
Compiling pin-project-lite v0.2.16
Compiling pin-utils v0.1.0
Compiling slab v0.4.11
Compiling solution v0.1.0 (/tmp/d20251030-1757769-wekx8v/solution)
warning: enum `VehicleKind` is never used
--> src/lib.rs:1:6
|
1 | enum VehicleKind
| ^^^^^^^^^^^
|
= note: `#[warn(dead_code)]` on by default
warning: struct `Vehicle` is never constructed
--> src/lib.rs:9:8
|
9 | struct Vehicle
| ^^^^^^^
warning: enum `DriveError` is never used
--> src/lib.rs:16:6
|
16 | enum DriveError
| ^^^^^^^^^^
warning: associated items `new` and `drive` are never used
--> src/lib.rs:23:8
|
21 | impl Vehicle
| ------------ associated items in this implementation
22 | {
23 | fn new(kind: VehicleKind, fuel: f64) -> Self
| ^^^
...
33 | fn drive(&mut self, km: f64) -> Result<(), DriveError>
| ^^^^^
warning: `solution` (lib) generated 4 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
|
1 | enum VehicleKind
| ----------- variants in this enum
...
4 | Truck,
| ^^^^^
5 | Motorcycle,
| ^^^^^^^^^^
6 | Bicycle,
| ^^^^^^^
|
= note: `#[warn(dead_code)]` on by default
warning: fields `needed` and `have` are never read
--> tests/../src/lib.rs:18:21
|
18 | 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 8.43s
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