ecrs 0.1.0-beta.4

Evolutionary computation tools & algorithms
Documentation 
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use crate::aco::FMatrix;
use itertools::Itertools;
use serde::ser::SerializeStruct;
use serde::{Serialize, Serializer};

/// Struct with path vector and its fitness
#[derive(Clone)]
pub struct Solution {
    pub path: Vec<usize>,
    pub fitness: f64,
}

impl Default for Solution {
    fn default() -> Self {
        Self {
            path: vec![],
            fitness: 0.0,
        }
    }
}

impl Solution {
    pub fn from_path(path: Vec<usize>) -> Self {
        let mut matrix = FMatrix::zeros(path.len(), path.len());
        for (i, j) in path.iter().circular_tuple_windows::<(&usize, &usize)>() {
            matrix[(*i, *j)] = 1.0;
            matrix[(*j, *i)] = 1.0;
        }

        Self {
            path,
            ..Self::default()
        }
    }
}

impl Serialize for Solution {
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        let mut s_struct = serializer.serialize_struct("solution", 2)?;
        s_struct.serialize_field("path", &self.path)?;
        s_struct.serialize_field("fitness", &self.fitness)?;

        s_struct.end()
    }
}

impl PartialEq<Self> for Solution {
    fn eq(&self, other: &Self) -> bool {
        self.fitness == other.fitness && self.path == other.path
    }
}