Struct ConstraintWeightOverrides 

pub struct ConstraintWeightOverrides<Sc: Score> { /* private fields */ }

Holds runtime overrides for constraint weights.

Use this to adjust constraint weights without recompiling. Weights can be changed between solver runs or even during solving (if you rebuild constraints).

Example

use solverforge_scoring::ConstraintWeightOverrides;
use solverforge_core::score::HardSoftScore;

let mut overrides = ConstraintWeightOverrides::<HardSoftScore>::new();

// Override specific constraint weights
overrides.put("room_conflict", HardSoftScore::of_hard(2));
overrides.put("preferred_room", HardSoftScore::of_soft(5));

// Get weight with fallback to default
let weight = overrides.get_or_default(
    "room_conflict",
    HardSoftScore::of_hard(1), // default if not overridden
);
assert_eq!(weight, HardSoftScore::of_hard(2));

// Non-overridden constraint uses default
let other = overrides.get_or_default(
    "other_constraint",
    HardSoftScore::of_soft(10),
);
assert_eq!(other, HardSoftScore::of_soft(10));

Implementations

impl<Sc: Score> ConstraintWeightOverrides<Sc>

pub fn new() -> Self

Creates an empty overrides container.

pub fn from_pairs<I, N>(iter: I) -> Self

where I: IntoIterator<Item = (N, Sc)>, N: Into<String>,

Creates overrides from an iterator of (name, weight) pairs.

Example

use solverforge_scoring::ConstraintWeightOverrides;
use solverforge_core::score::HardSoftScore;

let overrides = ConstraintWeightOverrides::from_pairs([
    ("hard_constraint", HardSoftScore::of_hard(1)),
    ("soft_constraint", HardSoftScore::of_soft(10)),
]);
assert_eq!(overrides.len(), 2);

pub fn put<N: Into<String>>(&mut self, name: N, weight: Sc)

Sets the weight for a constraint.

pub fn remove(&mut self, name: &str) -> Option<Sc>

Removes the override for a constraint.

pub fn get_or_default(&self, name: &str, default: Sc) -> Sc

Gets the overridden weight, or returns the default if not overridden.

pub fn get(&self, name: &str) -> Option<&Sc>

Gets the overridden weight if present.

pub fn contains(&self, name: &str) -> bool

Returns true if this constraint has an override.

pub fn len(&self) -> usize

Returns the number of overrides.

pub fn is_empty(&self) -> bool

Returns true if there are no overrides.

pub fn clear(&mut self)

Clears all overrides.

pub fn into_arc(self) -> Arc<Self>

Creates an Arc-wrapped version for sharing across threads.

Trait Implementations

impl<Sc: Clone + Score> Clone for ConstraintWeightOverrides<Sc>

fn clone(&self) -> ConstraintWeightOverrides<Sc>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<Sc: Score> Debug for ConstraintWeightOverrides<Sc>

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

Formats the value using the given formatter.

impl<Sc: Score> Default for ConstraintWeightOverrides<Sc>

fn default() -> Self

Returns the “default value” for a type.

impl<Sc: Score> WeightProvider<Sc> for ConstraintWeightOverrides<Sc>

fn weight(&self, name: &str) -> Option<Sc>

Gets the weight for a constraint by name.

fn weight_or_default(&self, name: &str, default: Sc) -> Sc

Gets the weight or returns the default.