Function space::linear_knn

pub fn linear_knn<'a, 'b, T: 'b>(
    search: &T, 
    neighbors: &'a mut [Neighbor], 
    space: impl IntoIterator<Item = &'b T>
) -> &'a mut [Neighbor] where
    T: MetricPoint, 

Performs a linear knn search by iterating over everything in the space and performing a binary search on running set of neighbors.

• search is the feature we are searching nearest neighbors for.
• neighbors is where the nearest neighbors are placed nearest to furthest.
• space is all of the points we are searching.

Returns a slice of the nearest neighbors from nearest to furthest.