Single
public class Single
Utility functions for asserting/converting query result into a single item.
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Utility function for asserting/converting query result into a single optional item.
Throws
QueryResultError
if the query result doesn’t have a single optional item.Declaration
Swift
public static func optional<T>(_ array: [T]) throws -> T?
Parameters
array
query result array.
-
Utility function for asserting/converting query result into a single required item.
Throws
QueryResultError
if the query result doesn’t have a single required item.Declaration
Swift
public static func required<T>(_ array: [T]) throws -> T
Parameters
array
query result array.