Struct Assignment 

pub struct Assignment { /* private fields */ }

Variable → value binding for density / outcome lookup.

Implementations

impl Assignment

pub fn new() -> Self

Empty assignment.

pub fn from_pairs(pairs: impl IntoIterator<Item = (VariableId, Value)>) -> Self

Build from unsorted pairs (sorted + last-wins on duplicate vars).

pub fn set(&mut self, var: VariableId, value: Value)

Insert or replace a binding.

pub fn get(&self, var: VariableId) -> Option<&Value>

Borrow value for var, if present.

pub fn entries(&self) -> &[(VariableId, Value)]

All bindings, sorted.

pub fn extend_from(&mut self, other: &Assignment)

Extend with another assignment (other wins on conflict).

pub fn remove(&mut self, var: VariableId) -> Option<Value>

Remove the binding for var, returning the previous value (if any).

Lets evaluators treat one shared assignment as a binding stack: scoped bindings are set on entry and removed (or restored) on exit instead of cloning the whole assignment per scope.

pub fn values_for(&self, vars: &[VariableId]) -> Result<Vec<Value>, EvalError>

Restrict to the given variables (order of vars preserved in returned values).

Trait Implementations

impl Clone for Assignment

fn clone(&self) -> Assignment

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Assignment

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

Formats the value using the given formatter.

impl Default for Assignment

fn default() -> Assignment

Returns the “default value” for a type.