Thanks for the clarification on how to use it in Swift - like this it's indeed the perfect solution by enforcing it to be explicit. Having multiple cases rolled into one is also a very nice option. The snark wasn't really called for though. No, I don't 'use' it by accident, that would in most cases just become a bug. I use it when it makes code more concise rather than having nested ifs. Consider for example ACL rules where you set different privileges by default according to an access level.