calco 0.1.0

Generic interface to work with genetic algorithms.
Documentation 
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mod tests {

    extern crate calco;
    extern crate rand;

    use self::rand::Rng;
    use self::calco::{ Universe, Config };
    use self::calco::StopCondition::*;
    use self::calco::{ Mutable, Reproducible, Evaluable };

    #[derive(Clone)]
    struct  Individual(f32, f32, f32);

    impl Mutable for Individual {

        fn mutate(&mut self) {

            match rand::thread_rng().gen_range(0, 3) {

                0 => { self.0 = rand::thread_rng().gen_range(-10_000.0, 10_000.0) },
                1 => { self.1 = rand::thread_rng().gen_range(-10_000.0, 10_000.0) },
                _ => { self.2 = rand::thread_rng().gen_range(-10_000.0, 10_000.0) }
            }
        }
    }

    impl Reproducible for Individual {

        fn reproduce_with(&self, other: &Self) -> Vec<Self> {

            // GEN THIS RANDOMLY !!!

            vec![Individual(
                    (self.0 + other.0) / 2.0,
                    (self.1 + other.1) / 2.0,
                    (self.2 + other.2) / 2.0
                ),
                Individual(other.0, self.1, other.2),
                Individual(self.0, other.1, self.2)
            ]
        }
    }

    impl Evaluable for Individual {

        fn evaluate(&self) -> f32 {

            let optimum = Individual(100.0, 0.0, -300.0);

            let a = self.0 - optimum.0;
            let b = self.1 - optimum.1;
            let c = self.2 - optimum.2;

            let pow_a = a * a;
            let pow_b = b * b;
            let pow_c = c * c;

            let dist = (pow_a + pow_b + pow_c).sqrt();
            let invert_dist = 1.0 / dist;

            // println!("numbers: {:<11} {:<11} {:<11} eval: {}",
                // self.0, self.1, self.2, invert_dist);

            return invert_dist;
        }
    }

    #[test]
    fn test_complete_working() {

        let config = Config{
                mutate_ratio: 0.01,
                pop_max: 100,
                stop_condition: GenerationReached(12_000)
            };

        let pop = vec![
                Individual(1200.0, -2328.0, 1816.0),
                Individual(-8234.0, 6472.0, 784.0),
                Individual(9451.0, -4613.0, -5131.0),
                Individual(-8641.0, -2358.0, -9761.0),
                Individual(-3715.0, 6.0, 3489.0),
                Individual(-651.0, 258.0, -6851.0)
            ];

        let mut world = Universe::from_pop(config, pop);

        for _ in 0..1_000 {

            world.evaluate();
            world.mutate();
            world.reproduce();
        }
    }
}