Installing the required software on Ubuntu Linux
In case we want to work with Swift 3 in Ubuntu Linux, we won't be able to run the examples that interact with any iOS API. However, we will be able to run a big percentage of the sample code included in this book, and we will be able to learn the most important object-oriented principles.
We can download the latest release for our Ubuntu version in the DOWNLOAD section at http://swift.org. This page includes all the instructions to install the required dependencies (clang and libicu-dev) and to execute the Swift REPL command-line environment.
Once we have completed the installation, we can execute the swift command to run the REPL in a Terminal. After we see a welcome message, we can enter Swift code ...
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