Multi-file examples - The Edition Guide

# Multi-file examples

Cargo has an `examples` feature for showing people how to use your package. By putting individual files inside of the top-level `examples` directory, you can create multiple examples.

But what if your example is too big for a single file? Cargo supports adding sub-directories inside of `examples`, and looks for a `main.rs` inside of them to build the example. It looks like this:

    my-package
     └──src
         └── lib.rs // code here
     └──examples
         └── simple-example.rs // a single-file example
         └── complex-example
            └── helper.rs
            └── main.rs // a more complex example that also uses `helper` as a submodule