Struct OpeningBook 

pub struct OpeningBook {
    pub map: HashMap<u64, i8>,
}

A cache that stores pre-computed scores for opening game positions.

The book is stored as a HashMap mapping a position’s unique key to its exact score. A default opening book of depth 8 is embedded within the executable, providing fast lookups without requiring any external files.

Fields

map: HashMap<u64, i8>

Implementations

impl OpeningBook

pub fn new() -> OpeningBook

Creates a new, empty opening book.

pub fn from_static_bytes(bytes: &'static [u8]) -> Result<OpeningBook, Error>

Creates an OpeningBook by deserialising from a byte slice.

This is the key function that allows an opening book to be embedded within the executable.

pub fn get(&self, position: &Position) -> Option<i8>

Looks up a position’s score in the opening book.

pub fn save(&self, path: &Path) -> Result<(), Box<dyn Error>>

Saves the opening book to a file using a compact binary format.

pub fn load(path: &Path) -> Result<OpeningBook, Box<dyn Error>>

Loads an opening book from a binary file.

Trait Implementations

impl Clone for OpeningBook

fn clone(&self) -> OpeningBook

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OpeningBook

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

Formats the value using the given formatter.

impl Default for OpeningBook

Default constructor for the OpeningBook struct.

fn default() -> OpeningBook

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for OpeningBook

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for OpeningBook

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.