Scala for the Impatient, 3rd Edition

Chapter 7. Packages, Imports, and Exports

Topics in This Chapter A1

• 7.1 Packages

• 7.2 Package Scope Nesting

• 7.3 Chained Package Clauses

• 7.4 Top-of-File Notation

• 7.5 Package-Level Functions and Variables

• 7.6 Package Visibility

• 7.7 Imports

• 7.8 Imports Can Be Anywhere

• 7.9 Renaming and Hiding Members

• 7.10 Implicit Imports

• 7.11 Exports

• Exercises

A package contains features with a common purpose. Large programs and libraries are typically organized into a multitude of packages.

Package names are unique but long. Using import statements, you can access the features of a package with a shorter name.

This chapter ends with a discussion of the export syntax, which is syntactically similar to import statements, but is used for delegation.

The key points ...