Multiple Roc Files

You can use modules to organize your code into multiple files.

Code

Hello.roc:

Hello :: {}.{
	# Only what's listed here is accessible to other modules
	hello : Str -> Str
	hello = |name| {
		"Hello ${name} from ${module_name}!\n"
	}
}

# Anything located outside of the Hello type can only be used in this file.
module_name = "Hello module"

main.roc:

import Hello exposing [hello]

main! = |_args| {
	# here we're calling the `hello` function from the Hello module
	echo!(hello("World"))
	Ok({})
}

Output

Run this from the directory that has main.roc in it:

$ roc main.roc
Hello World from Hello module!