Set (ext)

@frozen struct Set<Element> where Element : Hashable

An unordered collection of unique elements.

import GRDB

A toolkit for SQLite databases, with a focus on application development

protocol Hashable : Equatable

A 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.

mutating func formUnion(_ cursor: some Cursor<Element>) throws

Inserts the elements of the given cursor into the set.

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.