Impl of HousingDataset

HousingDataset.rs

pub fn new(v: Vec<&str>) -> HousingDataset {
        // note we have declared a new vector of &strings, remember borrowship, which will be a struct HousingDatset
        // as input we are receiving a string from the csv file. 
        // we are going to decode this as a f64 vector using the unwrap function 
        let unwrapped_text: Vec<f64> = v.iter().map(|r| r.parse().unwrap()).collect();