Finally, we come to the concept of packages and imports. For the majority of the book, the projects described live in something called a main package. The main package is a special package. Compiling a main package will yield an executable file that you can run.
Having said that, it's also often a good idea to organize your code into multiple packages. Packages are a form of abstraction barrier that we discussed previously with regards to variables and names. Exported names are accessible from outside the package. Exported fields of structs are also accessible from outside the package.
To import a package, you need to invoke an import statement at the top of the file:
package mainimport "PACKAGE LOCATION"
Throughout this ...
