What you need for this book

In order to work with Xcode and the Swift Playground, you will need a Mac OS computer capable of running OS X 10.10.5 or later with 8 GB of RAM.

In order to work with the Swift open source version on the Linux platform, you will need any computer capable of running Ubuntu 14.04 or later or Ubuntu 15.10 or later. These are the Linux distributions where the Swift open source binaries are built and tested. It is also possible to run the Swift compiler and utilities on other Linux distributions. You must take a look at the latest available documentation at the Swift open source website, https://swift.org.