Class StandardHeuristic

Provides the standard UniqueIn* heuristics.

Inheritance

System.Object

StandardHeuristic

Implements

IHeuristic

Inherited Members

System.Object.Equals(System.Object)

System.Object.Equals(System.Object, System.Object)

System.Object.GetHashCode()

System.Object.GetType()

System.Object.MemberwiseClone()

System.Object.ReferenceEquals(System.Object, System.Object)

System.Object.ToString()

Namespace: SudokuSpice.RuleBased.Heuristics

Assembly: SudokuSpice.dll

Syntax

public class StandardHeuristic : IHeuristic

Constructors

| Improve this Doc View Source

StandardHeuristic(IMissingRowValuesTracker, IMissingColumnValuesTracker, IMissingBoxValuesTracker)

Creates a standard heuristic that combines the UniqueInRowHeuristic, UniqueInColumnHeuristic, and UniqueInBoxHeuristic.

Declaration

public StandardHeuristic(IMissingRowValuesTracker rowValuesTracker, IMissingColumnValuesTracker columnValuesTracker, IMissingBoxValuesTracker boxValuesTracker)

Parameters

Type	Name	Description
IMissingRowValuesTracker	rowValuesTracker	Something that tracks the possible values for each row.
IMissingColumnValuesTracker	columnValuesTracker	Something that tracks the possible values for each column.
IMissingBoxValuesTracker	boxValuesTracker	Something that tracks the possible values for each box.

Methods

| Improve this Doc View Source

CopyWithNewReferences(IReadOnlyPuzzleWithMutablePossibleValues, ReadOnlySpan<IRule>)

Creates a deep copy of this heuristic. Requires rules to contain an IMissingBoxValuesTracker, an IMissingColumnValuesTracker, and an IMissingRowValuesTracker.

Declaration

public IHeuristic CopyWithNewReferences(IReadOnlyPuzzleWithMutablePossibleValues puzzle, ReadOnlySpan<IRule> rules)

Parameters

Type	Name	Description
IReadOnlyPuzzleWithMutablePossibleValues	puzzle
System.ReadOnlySpan<IRule>	rules

Returns

Type	Description
IHeuristic

| Improve this Doc View Source

TryInitFor(IReadOnlyPuzzleWithMutablePossibleValues)

Tries to initialize this heuristic for solving the given puzzle.

Declaration

public bool TryInitFor(IReadOnlyPuzzleWithMutablePossibleValues puzzle)

Parameters

Type	Name	Description
IReadOnlyPuzzleWithMutablePossibleValues	puzzle	The puzzle to solve.

Returns

Type	Description
System.Boolean	False if this heuristic cannot be initialized for the given puzzle, else true.

Remarks

In general, it doesn't make sense to want to maintain the previous state if this method fails. Therefore, it is not guaranteed that the heuristic's state is unchanged on failure.

| Improve this Doc View Source

UndoLastUpdate()

Undoes the last modifications made by this heuristic.

Declaration

public void UndoLastUpdate()

| Improve this Doc View Source

UpdateAll()

Updates all the current possible values.

Declaration

public bool UpdateAll()

Returns

Type	Description
System.Boolean	Returns true if any modifications were made.

Implements

IHeuristic