BishBosh.Property.Empty

AUTHOR

Dr. Alistair Ward

DESCRIPTION

• An interface for data which can support the concept of being empty.
• N.B.: the empty state of the type must be unique.
• cf. Data.Default or zero for a numeric type.

Type-classes

class Empty a where

An interface which data which can support the concept of being empty, may implement.

Minimal complete definition

empty

Methods

empty

Arguments

:: a

Constant.

Instances

Empty (TurnsByLogicalColour turn)

Methods

empty :: TurnsByLogicalColour turn

Empty (KillerMoves killerMove)

Methods

empty :: KillerMoves killerMove

Empty (MoveFrequency move)

Methods

empty :: MoveFrequency move

(Empty a, Empty b) => Empty (a, b)

Methods

empty :: (a, b)

(Enum x, Enum y, Ord x, Ord y) => Empty (MaybePieceByCoordinates x y)

Methods

empty :: MaybePieceByCoordinates x y

(Enum x, Enum y, Ord x, Ord y) => Empty (Board x y)

Methods

empty :: Board x y

Empty (Transpositions move positionHash)

Methods

empty :: Transpositions move positionHash

(Enum x, Enum y, Ord x, Ord y, Show x, Show y) => Empty (Game x y)

Methods

empty :: Game x y

Empty (QualifiedMoveForest x y)

Methods

empty :: QualifiedMoveForest x y

Empty (DynamicMoveData x y positionHash)

Methods

empty :: DynamicMoveData x y positionHash