Struct BatchEvalCache 

pub struct BatchEvalCache { /* private fields */ }

Cache for batch evaluation results in VQE optimization loops.

Optimized for scenarios where the same expression is evaluated many times with slightly different parameter sets (e.g., parameter sweeps).

Implementations

impl BatchEvalCache

pub fn new() -> Self

Create a new batch evaluation cache

pub fn with_capacity(max_expressions: usize, max_params_per_expr: usize) -> Self

Create a new batch evaluation cache with specified capacities

pub fn get_or_compute_batch<F>( &self, expr_hash: u64, param_hashes: &[u64], compute: F, ) -> Vec<f64>

where F: FnOnce(&[usize]) -> Vec<f64>,

Get or compute a batch of evaluation results

pub fn clear(&self)

Clear the cache

pub fn len(&self) -> usize

Get the number of cached expressions

pub fn is_empty(&self) -> bool

Check if the cache is empty

pub fn total_params_cached(&self) -> usize

Get total number of cached parameter sets across all expressions

Trait Implementations

impl Default for BatchEvalCache

fn default() -> Self

Returns the “default value” for a type.