⌃: Control

⌘: Command

⌥: Option

⇧: Shift

⏎: Return

1. Decide Where to Open a File

In Xcode, you can open a file in various ways: in the standard editor, in a new or existing assistant editor, in a new or existing tab, or in a new window. Here’s how you can decide about this:

Encoding and decoding with Swift 4

Swift 4 lets you serialize your custom data types to JSON without writing any special code.

In the past, migrating your code was a big deal when a new version of Swift was introduced – when Swift 3 came around, it seemed like every line of code had a syntax change. This time around, however, life should be a lot easier on us – in fact maybe you’ll even see this nice message during your migration: