Inserts the elements of the given cursor into the set.
mutating func formUnion(_ cursor: some Cursor<Element>) throws sSh4GRDBE9formUnionyyqd__K7ElementQyd__RszAA6CursorRd__lF What are these?87YOJwhere Element:HashableA cursor of elements.
If the set already contains one or more elements that are also in the cursor, the existing members are kept. If the cursor contains multiple instances of equivalent elements, only the first instance is kept.
import Swiftimport GRDBA toolkit for SQLite databases, with a focus on application development
@frozen struct Set<Element> where Element : HashableAn unordered collection of unique elements.
protocol Cursor<Element> : AnyObjectA type that supplies the values of some external resource, one at a time.
protocol Hashable : EquatableA type that can be hashed into a Hasher to produce an integer hash value.
init(_ cursor: some Cursor<Element>) throws Creates a set containing the elements of a cursor.
init(_ cursor: some Cursor<Element>, minimumCapacity: Int) throws Creates a set containing the elements of a cursor.
mutating func formIntersection(_ cursor: some Cursor<Element>) throws Removes the elements of the set that aren’t also in the given cursor.
func intersection(_ cursor: some Cursor<Element>) throws -> Set<Element> Returns a new set with the elements that are common to both this set and the given cursor.
func union(_ cursor: some Cursor<Element>) throws -> Set<Element> Returns a new set with the elements of both this set and the given cursor.