How to remove a key-value pair from swift dictionary?

Swift 5, Swift 4, and Swift 3:

x.removeValue(forKey: "MyUndesiredKey")

Cheers

You can use this:

dict[willRemoveKey] = nil

or this:

dict.removeValueForKey(willRemoveKey)

The only difference is that the second one will return the removed value (or nil if it didn't exist)

Swift 3

dict.removeValue(forKey: willRemoveKey)