fns.rs

pub fn generate_cache(data_handler: Box<dyn DataHandler>) {
    let mut data = Data::new();
    fill_data(&data_handler, DataHandler::get_items, &mut data.items);
}

fn fill_data<S, F, T>(handler: &S, func: F, vec: &mut Vec<T>)
where
    S: DataHandler,
    F: FnOnce(&S) -> dh::Result<dh::Container<T>>,
{
    match func(handler) {
        Ok(cont) => {}
        Err(e) => {}
    }
}