Modern Systems Programming with Scala Native

Working with Output

You may already be familiar with STDOUT, or standard output, if you’ve worked with scripting languages like Perl, Python, or Ruby. In fact, we’ve already used it in the ​Systems Programming in the Twenty-First Century​. The “system console” that Scala’s println writes to is none other than STDOUT. We can access it directly by importing Scala Native’s stdio object, which includes the standard file descriptors as well as the C functions that we’ll need to make use of them.

Introducing printf

Throughout this book, when I introduce a new function I’ll present its signature and then discuss its inputs, outputs, and effects. Most of the functions I’ll present are provided by the operating system or the C standard library. In any ...