Glossary

Key Points

Introduction	Julia is a just-in-time compiled language Julia packages compose well
Using the REPL	The REPL reads the given input, evaluates the given expression and prints the resulting output to the user. Pressing `?` enters help mode. Pressing `;` enters shell mode. Pressing `]` enters pkg mode.
Julia type system	In Julia types have only one direct supertype.
Using the package manager	Find packages on JuliaHub add packages using `pkg> add` use many small environments rather than one big environment
Write functions!	You can think of functions being a collection of methods Keep the number of positional arguments low Macros transform Julia expressions
Control flow	Interfaces are informal Use for loops for a known number of iterations and while loops for an unknown number of iterations. Julia packages compose nicely.
Using Modules	Modules introduce namespaces Public API has to be documented and can be exported
Creating Packages	The general registry is hosted on GitHub. Packaging is easy
Adding tests	Tests are important

FIXME