Getting string from Swift 4 new key path syntax?

Question

How can you get a string value from Swift 4 smart keypaths syntax (e.g., \\Foo.bar)? At this point I\'m curious about any way at all, does not matter if it

Answer 1

For Objective-C properties on Objective-C classes, you can use the _kvcKeyPathString property to get it.

However, Swift key paths may not have String equivalents. It is a stated objective of Swift key paths that they do not require field names to be included in the executable. It's possible that a key path could be represented as a sequence of offsets of fields to get, or closures to call on an object.

Of course, this directly conflicts with your own objective of avoiding to declare properties @objc. I believe that there is no built-in facility to do what you want to do.