How to add nil value to Swift Dictionary?

Question

I have made a request to my server in my app. And posted data something like this.Server side is waiting for all parameters even they are nil. But i couldn\'t add nil values to

Answer 1

postDict[surname]=nil

When you use subscript to set nil. It deletes the key if exists. In this case key surname will be removed from dictionary if exists.

To set value as nil, there are certain ways.

postDict.updateValue(nil, forKey: surname)

or

let anyObjectNil : AnyObject? = nil
postDict[surname] = anyObjectNil

or

postDict[surname] = nil as AnyObject?

Answer 2

You can use the updateValue method:

postDict.updateValue(nil, forKey: surname)

Answer 3

postDict[surname] = Optional<AnyObject>(nil)