If / guard shorthand for optional unwrapping

[toph42 (Topher Hickman)]

You might want to read this prior discussion of the same topic:

Let's fix `if let` syntax

Let me begin with saying that I agree with Chris Lattner: more readable code is the goal here. From https://forums.swift.org/t/if-let-shortcut-syntax/56: Right. “if let foo {“ is a frequently proposed extension to the syntax, but it is not one that we’re likely to ever add. I agree that this is a common pattern, and it would allow you to “write less code”, but that isn’t the goal of Swift. Since code is read more often than it is written, the real goal behind Swift is to let you write “more…