setObject equivalent in Swift

Question

I have obj-c code

[dictionary setObject:[[notification object] objectForKey:@"key"] forKey:@"anotherKey"];

how can I translate this to swift ? Notification is NSNotification object

I tried

dictionary.setValue(notification.valueForKey("key"), forKey: "anotherKey") 

but app crashes with error (sorry for image, paste doesn't work)

Answer 1

The pure Swift equivalent is

dictionary["anotherKey"] = notification.object?["key"]

If notification.object or the key key does not exist no object will be assigned.

Note:

Never use valueForKey / setValue:forKey: unless you have a distinct idea why you are using KVC.

Answer 2

Try this may be it helps you:

dictionary .setValue(notification.object["key"], forKey: "anotherKey")