iOS 10.0 beta 4 replaced after(when:, execute:) in class DispatchQueue by two alternatives:
public func asyncAfter(deadline: DispatchTime, execute: DispatchWorkItem)
public func asyncAfter(wallDeadline: DispatchWallTime, execute: DispatchWorkItem)
and a similar pair of functions with more options.
I could not find a documentation for the difference, does anybody know? I need it for a speech app, so individual milliseconds do not matter, but several tens or even hundreds of milliseconds might.