Comparing two enum variables regardless of their associated values

Question

Consider this enum:

enum DataType {
    case One (data: Int)
    case Two (value: String)
}

Swift has pattern matching to compare an enum w

Answer 1

Just confirm to Equatable like below

extension DataType: Equatable {
    static func == (lhs: DataType, rhs: DataType) -> Bool {
        switch (lhs, rhs) {
        case (.One, .Two), (.Two, .One):
            return false
        case (.One, .One), (.Two, .Two):
            return true
        }
    }
}

If you don't want to implement Equatable just move content into instance method:

extension DataType{
    func isSame(_ other: DataType) -> Bool {
        switch (self, other) {
        case (.One, .Two), (.Two, .One):
            return false
        case (.One, .One), (.Two, .Two):
            return true
        }
    }
}

Use:

let isTypeEqual = DataType.One(value: 1).isSame(DataType.One(value: 2))
print (isTypeEqual) // true