This is an example datapack for ComputerCraft, which can be used as a skeleton for your own pack.

Datapacks can be used to add or overwrite files in ComputerCraft's own rom, allowing you to add new programs or modules, or adjust the behaviour of existing ones. This pack comes with several features:

• apis/my_api.lua: Example of a old-style API with a single method my_api.do_something().
• programs/api_program.lua: A new program api_program, which just calls the above function.
• modules/main/my_module.lua: A new module with a single method do_something().
• programs/my_program.lua: A new program my_program, which just calls do_something from my_module.
• modules/turtle/helpers.lua: A new module with a digColumn method.
• programs/turtle/demo.lua: A new turtle program that uses the helpers module to dig 3x3 openings.
• autorun/my-pack.lua: A basic program which is run whenever a computer turns on. This may be used to perform additional setup, such as registering autocompletion for your programs.

(Note: files in turtle folders will only be visible to turtles!)

The contents of this project should be placed in the datapacks folder in your world's save folder. You may need to zip¹ the folder for Minecraft to recognize it. The resulting file structure should resemble the the built-in ROM folder, looking something like this:

datapacks
└─my-pack(.zip)
  ├ pack.mcmeta
  └─data
    └─computercraft
      └─lua
        └─rom
          └─<your files go here>

¹ The pack.mcmeta file should be in the root of the resulting zip. Using 7-Zip on Windows go into the my-pack folder, select all, RMB>7-Zip>Add to "my-pack.zip", then move to datapacks folder.

For more information on datapacks, see the Minecraft wiki.

Obviously this is just a skeleton, so is designed to be forked and used for your own programs!