solver 0.0.3-alpha.2

Solve optimization problems.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47

/// An `Individual` is a structure that represents a solution's composition.
///
/// For example, in scheduling problems an individual could represent a schedule.
#[derive(Clone)]
pub struct Individual {
    genes: Vec<u16>,
    fitness: i32,
}

impl Individual {
    pub fn new(genes: Vec<u16>, fitness: i32) -> Individual {
        Individual { genes, fitness }
    }

    pub fn update_fitness_score(&mut self, score: i32) {
        self.fitness = score;
    }

    pub fn get_genes(&self) -> &Vec<u16> {
        &self.genes
    }

    pub fn get_fitness(&self) -> &i32 {
        &self.fitness
    }

    pub fn update_gene(&mut self, pos: usize, gene: u16) {
        self.genes[pos] = gene;
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_individual() {
        let individual = Individual::new(vec![1, 2, 3], i32::MIN);

        // TODO: implement equality
        let expected = vec![1, 2, 3];
        let res: Vec<u16> = individual.genes.into_iter().collect();

        assert_eq!(res, expected);
        assert_eq!(individual.fitness, i32::MIN);
    }
}