Initializer

init(_:comparing:)

Creates a sort descriptor using a sort descriptor and a type that you specify.

Declaration 宣言 

init?(_ descriptor: NSSortDescriptor, comparing comparedType: Compared.Type) where Compared : NSObject

Parameters パラメータ

descriptor

A sort descriptor.

comparedType

The type that the sort descriptor compares.

Discussion 議論

Returns nil if there isn’t a SortDescriptor equivalent to the NSSortDescriptor you specify, or if the selector to NSSortDescriptor isn’t one of the standard string comparison algorithms or compare(_:).

The comparison for the created SortDescriptor uses the selector to the associated NSSortDescriptor directly, so in cases where the comparison of NSSortDescriptor might crash, the SortDescriptor comparison crashes as well.

See Also 参照

Creating Sort Descriptors

init(KeyPath<Compared, Date>, order: SortOrder)
Creates a sort descriptor using a key path to a date.
init(KeyPath<Compared, Date?>, order: SortOrder)
Creates a sort descriptor using a key path to an optional date.
init(KeyPath<Compared, UUID>, order: SortOrder)
Creates a sort descriptor using a key path to a UUID.
init(KeyPath<Compared, UUID?>, order: SortOrder)
Creates a sort descriptor using a key path to an optional UUID.
init(KeyPath<Compared, Bool>, order: SortOrder)
Creates a sort descriptor using a key path to a Boolean value.
init(KeyPath<Compared, Bool?>, order: SortOrder)
Creates a sort descriptor using a key path to an optional Boolean value.
init(KeyPath<Compared, Double>, order: SortOrder)
Creates a sort descriptor using a key path to a double.
init(KeyPath<Compared, Double?>, order: SortOrder)
Creates a sort descriptor using a key path to an optional double.
init(KeyPath<Compared, Float>, order: SortOrder)
Creates a sort descriptor using a key path to a float.
init(KeyPath<Compared, Float?>, order: SortOrder)
Creates a sort descriptor using a key path to an optional float.