How to solve “String interpolation produces a debug description for an optional value; did you mean to make this explicit?” in Xcode 8.3 beta?

Question

Since beta 8.3, zillions warnings \"String interpolation produces a debug description for an optional value; did you mean to make this explicit?\" appeared in my code.

Answer 1

Create an interpolation method that accepts an optional generic Type with an unnamed parameter. All your annoying warnings will magically disappear.

extension DefaultStringInterpolation {
  mutating func appendInterpolation(_ optional: T?) {
    appendInterpolation(String(describing: optional))
  }
}