Setting up equatable for PFObject

I m getting error when setting up equatable in swift

extension PFObject : Equatable {}

public func ==(lhs:PFObject,rhs:PFObject) -> Bool {

return lhs.objectId == rhs.objectId
}

Below the following error I m getting

Redundant conformance of 'PFObject' to protocol 'Equatable'

Is there any solution for this error?

A change in Swift 2 makes every NSObject conform to Equatable through the isEqual implementation which simply compares pointer values (read more here).

You can use the following extension to override the default implementation of isEqual:

extension PFObject {
  public override func isEqual(object: AnyObject?) -> Bool {
    if (object as? PFObject)?.objectId == self.objectId {
      return true
    } else {
      return super.isEqual(object)
    }
  }
}

Setting up equatable for PFObject, I m getting error when setting up equatable in swift extension PFObject : Equatable {} public func ==(lhs:PFObject,rhs:PFObject) -> Bool { return  PFObject inherits from NSObject so it is already conforming to Equatable. Instead of adding Equatable to a class that already implements it, you should subclass it and override the default implementation.

PFObject inherits from NSObject so it is already conforming to Equatable.

Instead of adding Equatable to a class that already implements it, you should subclass it and override the default implementation.

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Here's an example implementation of isEqual that also checks the object is of the same Parse object type.

extension PFObject {
    open override func isEqual(_ object: Any?) -> Bool {
        if let parseObject = object as? PFObject {
            return parseObject.parseClassName == self.parseClassName && parseObject.objectId == self.objectId
        } else {
            return super.isEqual(object)
        }
    }
}

PFObject - St4k, iosarraysswiftsortingpfobject. Aug 18 '16 10:16. Frankie. 9,038. 1. vote. 3. answers. 195. views. Setting up equatable for PFObject. swiftparse-platform​pfobject  You can rely on automatic synthesis of the Equatable protocol’s requirements for a custom type when you declare Equatable conformance in the type’s original declaration and your type meets these criteria: For a struct, all its stored properties must conform to Equatable. For an enum, all its associated values must conform to Equatable.

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Comments
  • It might be a good idea to also compare the types since I believe objectId is not necessarily unique across different subclasses of PFObject.
  • @Vimlan.G I added an answer with the implementation that I'm using.