j— title: “Import Once in Julia” date: 2021-08-23T16:24:40+02:00 categories:

• technical support tags:
• julia draft: false

Background

I’m reading Think Julia to repick the language again.

• To import a package/module, we using Foo.
• To run a script within the REPL, we include("foo.jl").

This is useful for user-defined functions, which are usually multi-line.

Problem

How to avoid importing a module/including a file twice?

Solution

Here’s a modified code from the book to give an example.