Решение на упр.03 задача 2 от Йоан Грозев
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 {
Vehicle {
kind:kind,
fuel:fuel,
distance: 0.0,
}
}
fn drive(&mut self, km: f64) -> Result<(), DriveError> {
let consumption = match self.kind {
VehicleKind::Car => 0.07,
VehicleKind::Truck => 0.15,
VehicleKind::Motorcycle => 0.05,
VehicleKind::Bicycle => 0.0,
};
if consumption == 0.0 {
self.distance = self.distance + km;
return Ok(());
}
let requiredFuel = km * consumption;
if self.fuel >= requiredFuel {
self.fuel = self.fuel - requiredFuel;
self.distance = self.distance + km;
Ok(())
} else {
Err(DriveError::NotEnoughFuel {
needed: requiredFuel,
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 pin-utils v0.1.0
Compiling memchr v2.7.6
Compiling pin-project-lite v0.2.16
Compiling slab v0.4.11
Compiling solution v0.1.0 (/tmp/d20251030-1757769-uy1ef8/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:21:8
|
20 | impl Vehicle {
| ------------ associated items in this implementation
21 | fn new(kind: VehicleKind, fuel: f64) -> Self {
| ^^^
...
29 | fn drive(&mut self, km: f64) -> Result<(), DriveError> {
| ^^^^^
warning: variable `requiredFuel` should have a snake case name
--> src/lib.rs:42:13
|
42 | let requiredFuel = km * consumption;
| ^^^^^^^^^^^^ help: convert the identifier to snake case: `required_fuel`
|
= note: `#[warn(non_snake_case)]` on by default
warning: `solution` (lib) generated 5 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:3:5
|
1 | 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:17:21
|
17 | NotEnoughFuel { needed: f64, have: f64 },
| ------------- ^^^^^^ ^^^^
| |
| fields in this variant
warning: variable `requiredFuel` should have a snake case name
--> tests/../src/lib.rs:42:13
|
42 | let requiredFuel = km * consumption;
| ^^^^^^^^^^^^ help: convert the identifier to snake case: `required_fuel`
|
= note: `#[warn(non_snake_case)]` on by default
warning: `solution` (test "solution_test") generated 3 warnings
Finished `test` profile [unoptimized + debuginfo] target(s) in 8.45s
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