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//! This module contains the Solution trait, which can be used to implement new Solution types

use std::fmt::Debug;
use std::ops::Sub;

/// This trait is the Solution trait, which provides the necessary pieces for a problem to
/// interface with CISAT
pub trait Solution: PartialOrd + Sub<Output = f64> + Sized + Send + Ord + Clone + Debug {
    /// A problem must have a number of move operators specified
    const NUMBER_OF_MOVE_OPERATORS: usize;
    /// A problem must have a number of objectives specified
    const NUMBER_OF_OBJECTIVES: usize;
    /// A problem must have a means for generating an initia solution
    fn generate_initial_solution() -> Self;
    /// A problem must have a way to apply move operators to itself
    fn apply_move_operator(&mut self, move_index: usize, temperature: f64);
    /// A problem must have a mapping to a quality scalar
    fn get_quality_scalar(&self) -> f64;
}