BishBosh.Search.EphemeralData

AUTHOR

Dr. Alistair Ward

DESCRIPTION

Controls the growth of dynamic data collected during the search for a move.

Type-classes

class EphemeralData a where

An interface for short-lived data.

Methods

getSize

Arguments

:: a

-> Int

Get the current size of the collection.

euthanise

Arguments

:: NPlies

-> a

-> a

Prune items older than the specified number of plies, from the data.

Instances

EphemeralData (KillerMoves killerMoveKey)

Defined in BishBosh.Search.KillerMoves

Methods

getSize :: KillerMoves killerMoveKey -> Int

euthanise :: NPlies -> KillerMoves killerMoveKey -> KillerMoves killerMoveKey

EphemeralData (Transpositions qualifiedMove positionHash)

Defined in BishBosh.Search.Transpositions

Methods

getSize :: Transpositions qualifiedMove positionHash -> Int

euthanise :: NPlies -> Transpositions qualifiedMove positionHash -> Transpositions qualifiedMove positionHash

class MaybeEphemeralData a where

For data which can be killed.

Methods

maybeEuthanise

Arguments

:: NPlies

The age at which to die.

-> MaybeRetireAfterNMoves

The optional age at which to retire killer-moves.

-> MaybeRetireAfterNMoves

The optional age at which to retire transpositions.

-> a

-> a

Instances

MaybeEphemeralData (DynamicMoveData x y positionHash)

Defined in BishBosh.Search.DynamicMoveData

Methods

maybeEuthanise :: NPlies -> MaybeRetireAfterNMoves -> MaybeRetireAfterNMoves -> DynamicMoveData x y positionHash -> DynamicMoveData x y positionHash

MaybeEphemeralData (SearchState x y positionHash)

Defined in BishBosh.Search.SearchState

Methods

maybeEuthanise :: NPlies -> MaybeRetireAfterNMoves -> MaybeRetireAfterNMoves -> SearchState x y positionHash -> SearchState x y positionHash