Struct vrp_core::construction::heuristics::InsertionContext

pub struct InsertionContext {
    pub problem: Arc<Problem>,
    pub solution: SolutionContext,
    pub environment: Arc<Environment>,
}

A context which contains information needed for heuristic and metaheuristic.

Fields

problem: Arc<Problem>

Original problem.

solution: SolutionContext

Solution context: discovered solution.

environment: Arc<Environment>

Information about environment.

Implementations

impl InsertionContext

pub fn new(problem: Arc<Problem>, environment: Arc<Environment>) -> Self

Creates insertion context for given problem with unassigned jobs.

pub fn new_empty(problem: Arc<Problem>, environment: Arc<Environment>) -> Self

Creates insertion context for given problem with empty solution.

pub fn new_from_solution( problem: Arc<Problem>, solution: (Solution, Option<Cost>), environment: Arc<Environment> ) -> Self

Creates insertion context from existing solution.

pub fn get_total_cost(&self) -> Option<Cost>

Gets total cost of the solution.

Returns None if cost cannot be calculate as the context is in non-consistent state.

pub fn restore(&mut self)

Restores valid context state.

Trait Implementations

impl Debug for InsertionContext

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

Formats the value using the given formatter.

impl DominanceOrdered for InsertionContext

fn get_order(&self) -> &DominanceOrder

Gets dominance order in the population.

fn set_order(&mut self, order: DominanceOrder)

Sets dominance order in the population.

impl From<InsertionContext> for Solution

fn from(insertion_ctx: InsertionContext) -> Self

Converts to this type from the input type.

impl HeuristicSolution for InsertionContext

fn fitness<'a>(&'a self) -> Box<dyn Iterator<Item = f64> + 'a>

Get fitness values of a given solution.

fn deep_copy(&self) -> Self

Creates a deep copy of the solution.

impl Input for InsertionContext

fn weights(&self) -> &[f64]

Returns weights.

impl RosomaxaWeighted for InsertionContext

fn init_weights(&mut self)

Initializes weights.