Equatable in Swift

Question

I am trying to define Equatable using Swift structs. I am getting an error on the line func == saying Operators are only allowed at global scope.

struct ShoppingList {

    var shoppingListId :NSNumber
    var title :String

    init(title :String) {

        self.title = title
        self.shoppingListId = NSNumber(integer: 0)
    }
}

extension ShoppingList {

    public func ==(lhs :ShoppingList, rhs :ShoppingList) -> Bool {
        return lhs.title == rhs.title
    }

}

What am I missing?

score 3 · Accepted Answer · answered Nov 23 '15 at 17:33

3

Exactly what it says. Move the operator function definition outside of the extension. It's done at a global scope.

answered Nov 23 '15 at 17:33

Rob Napier

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Equatable in Swift

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