Struct vrp_core::models::common::SingleDimLoad

pub struct SingleDimLoad {
    pub value: i32,
}

Specifies single dimensional load type.

Fields

value: i32

An actual load value.

Implementations

impl SingleDimLoad

pub fn new(value: i32) -> Self

Creates a new instance of SingleDimLoad.

Examples found in repository

examples/custom_objective.rs (line 105)

fn define_problem(goal: GoalContext, transport: Arc<dyn TransportCost + Send + Sync>) -> GenericResult<Problem> {
    // create 4 jobs where two are having top prio
    let single_jobs = (1..=4)
        .map(|idx| {
            SingleBuilder::default()
                .id(format!("job{idx}").as_str())
                .demand(Demand::delivery(1))
                .dimension(|dimens| {
                    // mark two jobs as top priority (2 and 4 locations)
                    dimens.set_job_priority(idx % 2 == 0);
                })
                .location(idx)?
                .build_as_job()
        })
        .collect::<Result<Vec<_>, _>>()?;

    // define a single vehicle with limited capacity which doesn't need to return back to the depot
    let vehicle = VehicleBuilder::default()
        .id("v1".to_string().as_str())
        .add_detail(VehicleDetailBuilder::default().set_start_location(0).build()?)
        // only two jobs can be served by the vehicle
        .capacity(SingleDimLoad::new(2))
        .build()?;

    ProblemBuilder::default()
        .add_jobs(single_jobs.into_iter())
        .add_vehicles(once(vehicle))
        .with_goal(goal)
        .with_transport_cost(transport)
        .build()
}

examples/cvrp.rs (line 48)

fn define_problem(goal: GoalContext, transport: Arc<dyn TransportCost + Send + Sync>) -> GenericResult<Problem> {
    // create 4 jobs with location indices from 1 to 4
    let single_jobs = (1..=4)
        .map(|idx| {
            SingleBuilder::default()
                .id(format!("job{idx}").as_str())
                // each job is delivery job with demand=1
                .demand(Demand::delivery(1))
                // job has location, which is an index in routing matrix
                .location(idx)?
                .build_as_job()
        })
        .collect::<Result<Vec<_>, _>>()?;

    // create 4 vehicles
    let vehicles = (1..=4)
        .map(|idx| {
            VehicleBuilder::default()
                .id(format!("v{idx}").as_str())
                .add_detail(
                    VehicleDetailBuilder::default()
                        // vehicle starts at location with index 0 in routing matrix
                        .set_start_location(0)
                        // vehicle should return to location with index 0
                        .set_end_location(0)
                        .build()?,
                )
                // each vehicle has capacity=2, so it can serve at most 2 jobs
                .capacity(SingleDimLoad::new(2))
                .build()
        })
        .collect::<Result<Vec<_>, _>>()?;

    ProblemBuilder::default()
        .add_jobs(single_jobs.into_iter())
        .add_vehicles(vehicles.into_iter())
        .with_goal(goal)
        .with_transport_cost(transport)
        .build()
}

examples/custom_constraint.rs (line 88)

fn define_problem(goal: GoalContext, transport: Arc<dyn TransportCost + Send + Sync>) -> GenericResult<Problem> {
    // create 4 jobs when second and forth have fridge requirement
    let single_jobs = (1..=4)
        .map(|idx| {
            SingleBuilder::default()
                .id(format!("job{idx}").as_str())
                .demand(Demand::delivery(1))
                .dimension(|dimens| {
                    // all jobs have fridge requirements, but only one vehicle will be allowed to serve them
                    dimens.set_job_hardware("fridge".to_string());
                })
                .location(idx)?
                .build_as_job()
        })
        .collect::<Result<Vec<_>, _>>()?;

    // create 2 vehicles
    let vehicles = (1..=2)
        .map(|idx| {
            VehicleBuilder::default()
                .id(format!("v{idx}").as_str())
                .add_detail(
                    VehicleDetailBuilder::default()
                        // vehicle starts at location with index 0 in routing matrix
                        .set_start_location(0)
                        // vehicle should return to location with index 0
                        .set_end_location(0)
                        .build()?,
                )
                .dimension(|dimens| {
                    if idx % 2 == 0 {
                        // only one vehicle has a hardware requirement set to 'fridge'
                        dimens.set_vehicle_hardware(once("fridge".to_string()).collect());
                    }
                })
                // each vehicle has capacity=2, so it can serve at most 2 jobs
                .capacity(SingleDimLoad::new(2))
                .build()
        })
        .collect::<Result<Vec<_>, _>>()?;

    ProblemBuilder::default()
        .add_jobs(single_jobs.into_iter())
        .add_vehicles(vehicles.into_iter())
        .with_goal(goal)
        .with_transport_cost(transport)
        .build()
}

examples/pdptw.rs (line 63)

fn define_problem(goal: GoalContext, transport: Arc<dyn TransportCost + Send + Sync>) -> GenericResult<Problem> {
    // build two PUDO (pick up/drop off) jobs with demand=1 and permissive time windows (just to show API usage)
    let pudos = (1..=2)
        .map(|idx| {
            let location_idx = if idx == 1 { 1 } else { 3 };
            MultiBuilder::default()
                .id(format!("pudo{idx}").as_str())
                .add_job(
                    SingleBuilder::default()
                        .demand(Demand::pudo_pickup(1))
                        .times(vec![TimeWindow::new(0., 1000.)])?
                        .duration(10.)?
                        .location(location_idx)?
                        .build()?,
                )
                .add_job(
                    SingleBuilder::default()
                        .demand(Demand::pudo_delivery(1))
                        .times(vec![TimeWindow::new(0., 1000.)])?
                        .duration(10.)?
                        .location(location_idx + 1)?
                        .build()?,
                )
                .build_as_job()
        })
        .collect::<Result<Vec<_>, _>>()?;

    // define a single vehicle with limited capacity
    let vehicle = VehicleBuilder::default()
        .id("v1".to_string().as_str())
        .add_detail(
            VehicleDetailBuilder::default()
                // vehicle starts at location with index 0 in routing matrix
                .set_start_location(0)
                .set_start_time(0.)
                // vehicle should return to location with index 0
                .set_end_location(0)
                .set_end_time(10000.)
                .build()?,
        )
        // the vehicle has capacity=1, so it is forced to do delivery after each pickup
        .capacity(SingleDimLoad::new(1))
        .build()?;

    ProblemBuilder::default()
        .add_jobs(pudos.into_iter())
        .add_vehicles(once(vehicle))
        .with_goal(goal)
        .with_transport_cost(transport)
        .build()
}

Trait Implementations

impl Add for SingleDimLoad

type Output = SingleDimLoad

The resulting type after applying the + operator.

fn add(self, rhs: Self) -> Self::Output

Performs the + operation.

impl Clone for SingleDimLoad

fn clone(&self) -> SingleDimLoad

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SingleDimLoad

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SingleDimLoad

fn default() -> SingleDimLoad

Returns the “default value” for a type.

impl Display for SingleDimLoad

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Load for SingleDimLoad

fn is_not_empty(&self) -> bool

Returns true if it represents an empty load.

fn max_load(self, other: Self) -> Self

Returns max load value.

fn can_fit(&self, other: &Self) -> bool

Returns true if other can be loaded into existing capacity.

fn ratio(&self, other: &Self) -> f64

Returns ratio.

impl Mul<f64> for SingleDimLoad

type Output = SingleDimLoad

The resulting type after applying the * operator.

fn mul(self, value: f64) -> Self::Output

Performs the * operation.

impl Ord for SingleDimLoad

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for SingleDimLoad

fn eq(&self, other: &Self) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for SingleDimLoad

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Sub for SingleDimLoad

type Output = SingleDimLoad

The resulting type after applying the - operator.

fn sub(self, rhs: Self) -> Self::Output

Performs the - operation.

impl Copy for SingleDimLoad

impl Eq for SingleDimLoad

impl LoadOps for SingleDimLoad

impl SharedResource for SingleDimLoad

Implement SharedResource for a single dimensional load.