Swift Equatable Protocol

Question

I was folling this tutorial for Swift: https://www.raywenderlich.com/125311/make-game-like-candy-crush-spritekit-swift-part-1 and came across this code:

func == (lhs: Cookie, rhs: Cookie) -> Bool {     return lhs.column == rhs.column && lhs.row == rhs.row } 

I wrote exactly that, but Xcode is giving my these errors:

Consecutive declarations on a line must be separated by ';' Expected declaration operators are only allowed at global scope 

I found this code from apple's documentation: https://developer.apple.com/documentation/swift/equatable

Which is very similar to what I wrote. Whats wrong? This seems like a bug to me. I am using Xcode 6 Beta 2

EDIT:

This is my whole Cookie class:

class Cookie: Printable, Hashable {     var column: Int     var row: Int     let cookieType: CookieType     let sprite: SKSpriteNode?          init(column: Int, row: Int, cookieType: CookieType) {         self.column = column         self.row = row         self.cookieType = cookieType     }          var description: String {         return "type:\(cookieType) square:(\(column),\(row))"     }          var hashValue: Int {         return row * 10 + column     }          func ==(lhs: Cookie, rhs: Cookie) -> Bool {         return lhs.column == rhs.column && lhs.row == rhs.row     } } 

Answer 1

Move this function

func == (lhs: Cookie, rhs: Cookie) -> Bool {     return lhs.column == rhs.column && lhs.row == rhs.row } 

Outside of the cookie class. It makes sense this way since it's overriding the == operator at the global scope when it is used on two Cookies.