CoreStoreObjectValueDiff

public final class CoreStoreObjectValueDiff<V> where V : ImportableAttributeType

The object containing the changeset for an observed ValueContainer.Required and ValueContainer.Optional property.

  • Indicates the kind of change. See the comments for NSObject.observeValue(forKeyPath:of:change:context:) for more information.

    Declaration

    Swift

    public let kind: NSKeyValueChange

  • newValue and oldValue will only be non-nil if .new/.old is passed to observe(). newValue will be nil if isPrior is true.

    Declaration

    Swift

    public private(set) lazy var newValue: V? { get set }

  • newValue and oldValue will only be non-nil if .new/.old is passed to observe().

    Declaration

    Swift

    public private(set) lazy var oldValue: V? { get set }

  • ‘isPrior’ will be true if this change observation is being sent before the change happens, due to .prior being passed to observe()

    Declaration

    Swift

    public let isPrior: Bool