Default arguments in Swift May 24, 2015
Inspired by John Sundell I figured now would be as good a time as any to write something here.
Let’s kick it off with a nice Swift feature I saw on Twitter the other day where default arguments to functions are actual expressions, rather than constants. For example:
While this example doesn’t make a lot of sense, a better use case would be together with some of Apples shared instance APIs.
This provides the convinience of not having to pass the file manager around everywhere but still makes the code more testable as you can pass in a test object from a test.