how to get the symmetric difference of two sets in swift

To get the symmetric difference of two sets, you can use the symmetricDifference method provided by the Swift standard library. This returns a new set with the elements that are in either of the two sets, but not in both.

main.swift
let set1: Set<Int> = [1, 2, 3, 4, 5]
let set2: Set<Int> = [4, 5, 6, 7, 8]

let symmetricDifference = set1.symmetricDifference(set2)
print(symmetricDifference) // [1, 2, 3, 6, 7, 8]
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Alternatively, you can use custom operators to get the symmetric difference. Here is an example implementation of the symmetric difference operator for sets:

main.swift
extension Set {
    static func ^ (left: Set<Element>, right: Set<Element>) -> Set<Element> {
        return left.symmetricDifference(right)
    }
}

let symmetricDifference = set1 ^ set2
print(symmetricDifference) // [1, 2, 3, 6, 7, 8]
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With this implementation, you can use the ^ operator to get the symmetric difference of two sets.