I Ching

The source code is available on GitHub This is a published Rust crate

This library contains methods for divination using the I Ching and also includes a CLI app for making predictions in your terminal. The CLI app was inspired by the original ching(6) Unix app.

The I Ching (a.k.a. the Book of Changes) is an ancient method of divination based on cleromancy (assigning meaning to the generation of apparently random numbers.) Six numbers between 6 and 9 are generated in order to create a hexagram, the meaning of which is contained in the I Ching book.

You can find lots of great information on the 2000+ year history of the I Ching on Wikipedia

Using the CLI app

To install this crate as a CLI app, just run

cargo install iching

This assumes that you have Rust installed on your machine.

Once installed, you can access the help screen with the --help flag:

iching --help

This project is a work in progress. If you find any issues, please submit them through GitHub.

Using the crate

fn main() {
// Implementing the HexagramRepository trait is the most complex
// aspect of using this library. See the included CLI app for an
// example implementation called HexagramJson.
let mut hexagrams: HexagramRepository = HexagramJson::new();
// Don't forget to initialize repository after construction, else
// it could fail to work or even panic.
hexagrams.initialize().expect("Initialization of hexagrams has failed");
// Create a new random hexagram.
let new_hexagram = Hexagram::from_coin_tosses();
// Get the number of the hexagram according to changing lines and ordering
let hexagram_number = new_hexagram.as_number(false, HexagramOrdering::KingWen);
// Fetch the hexagram's info from the repository that was initialized earlier.
let hexagram_info = hexagrams.get_by_number(hexagram_number)
.expect("Failed to get hexagram info by number (pre)");
// Print the hexagram info
print!("{}", hexagram_info);