Function grid_search 

pub fn grid_search<A: 'static + Send + Sync, T: 'static + Copy + Send + Sync + Default + Debug + SampleUniform + PartialOrd + AddAssign + Add<Output = T> + Sub<Output = T> + Div<Output = T> + Mul<Output = T> + FromPrimitive, const N: usize>(
    ranges: [Range<T>; N],
    f: fn(&[T; N], Option<Arc<A>>) -> f64,
    evaluation_data: Option<Arc<A>>,
    polling: Option<Polling>,
    threads: Option<usize>,
    points: [u64; N],
) -> [T; N]

Grid search

Evaluate all combinations of values from the 3 values where:

• Value 1 covers 10 values at equal intervals from 0..10 (0,1,2,3,4,5,6,7,8,9).
• Value 2 covers 11 values at equal intervals from 5..15.
• Value 3 covers 12 values at equal intervals from 10..20.

Printing progress every 10ms and exiting early if a value is found which is less than or equal to 15..

use std::{sync::Arc,time::Duration};
use simple_optimization::{grid_search, Polling};
fn simple_function(list: &[f64; 3], _: Option<Arc<()>>) -> f64 { list.iter().sum() }
let best = grid_search(
    [0f64..10f64, 5f64..15f64, 10f64..20f64], // Value ranges.
    simple_function, // Evaluation function.
    None, //  No additional evaluation data.
    // Polling every `10ms`, printing progress (`true`), exiting early if `15.` or less is reached, and not printing thread execution data (`false`).
    Some(Polling { poll_rate: Duration::from_millis(5), printing: true, early_exit_minimum: Some(15.), thread_execution_reporting: false }),
    None, // We don't specify the number of threads.
    // Take `10` samples along range `0` (`0..10`), `11` along range `1` (`5..15`)
    //  and `12` along range `2` (`10..20`).
    // In total taking `10*11*12=1320` samples.
    [10,11,12],
);
assert_eq!(simple_function(&best, None), 15.);

Due to specific design the threads parameter is excluded for now.