Abusing Swift’s Result Type
A tale about when the Result type shouldn’t be used.
5 min readApr 21, 2023
When the Result type was added to Swift’s standard library a few years ago, this simple change affected how we treat completion-based asynchronous methods enormously. Judge for yourself: Clumsy and ambiguous completion handlers like this sank into oblivion:
func getData(_ completionHandler: (_ data…