myart-abcd 0.1.0

A fake library just for learning...
Documentation 
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//! # Art
//!
//! A library for modeling artistic concepts.

pub use self::kinds::PrimaryColor;
pub use self::kinds::SecondaryColor;
pub use self::utils::mix;

pub mod kinds {
    /// The primary colors according to the RYB color model.
    pub enum PrimaryColor {
        Red,
        Yellow,
        Blue,
    }

    /// The secondary colors according to the RYB color model.
    pub enum SecondaryColor {
        Orange,
        Green,
        Purple,
    }
}

pub mod utils {
    use crate::kinds::*;

    /// Combines two primary colors in equal amounts to create
    /// a secondary color.
    pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
        use PrimaryColor::*;
        use SecondaryColor::*;

        match (c1, c2) {
            (Red, Yellow) | (Yellow, Red) => Orange,
            (Yellow, Blue) | (Blue, Yellow) => Green,
            (Red, Blue) | (Blue, Red) => Purple,
            _ => panic!("Cannot mix the same primary color to get a secondary color"),
        }
    }
}