Struct SolomonInstance 

pub struct SolomonInstance {
    pub name: String,
    pub vehicle: VehicleConfig,
    pub num_nodes: usize,
    pub xs: Vec<f32>,
    pub ys: Vec<f32>,
    pub demands: Vec<f32>,
    pub ready_times: Vec<f32>,
    pub due_times: Vec<f32>,
    pub service_times: Vec<f32>,
    pub distance_matrix: Vec<f32>,
}

A parsed Solomon CVRP instance with contiguous memory layouts (SoA) optimized for CPU caching and direct GPU device transfers.

Fields

name: String

Instance identifier / name (e.g., “C101”).

vehicle: VehicleConfig

Fleet and vehicle capacity settings.

num_nodes: usize

Total number of nodes (1 depot at index 0 + N customers).

xs: Vec<f32>

X-coordinates of all nodes (depot at index 0).

ys: Vec<f32>

Y-coordinates of all nodes (depot at index 0).

demands: Vec<f32>

Demand of each node (depot demand at index 0 is always 0.0).

ready_times: Vec<f32>

Ready times for time-window constraints (available for rich VRP extensions).

due_times: Vec<f32>

Due times for time-window constraints.

service_times: Vec<f32>

Service times at each customer.

distance_matrix: Vec<f32>

Flattened 1D row-major euclidean distance matrix of size num_nodes * num_nodes. Distance from node i to node j is accessed via distance_matrix[i * num_nodes + j].

Implementations

impl SolomonInstance

pub fn validate(&self) -> Result<(), &'static str>

Validates the public arrays and the symmetric CVRP cost model.

Call this after constructing or mutating an instance manually. Validation is O(n²), including finite, nonnegative, symmetric distances.

pub fn distance(&self, from: usize, to: usize) -> f32

Returns the euclidean distance between node from and node to.

pub fn demand(&self, node: usize) -> f32

Returns the demand of node.

Trait Implementations

impl Clone for SolomonInstance

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SolomonInstance

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

Formats the value using the given formatter.

impl FromStr for SolomonInstance

type Err = SolomonParseError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl PartialEq for SolomonInstance

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SolomonInstance