Function average_precision 

pub fn average_precision<P, B, W>(
    predictions: &(impl Data<P> + SortableData<P>),
    labels: &impl Data<B>,
    weights: Option<&impl Data<W>>,
    order: Option<Order>,
) -> f64
where
    P: IntoF64 + TotalCmp + Float + TotalOrder,
    B: BinaryLabel,
    W: IntoF64,