Function select 

pub fn select<T, D>(
    condlist: &[Array<bool, D>],
    choicelist: &[Array<T, D>],
    default: T,
) -> Result<Array<T, IxDyn>, FerrayError>
where
    T: Element,
    D: Dimension,

Return an array drawn from elements in choicelist, depending on conditions.

Equivalent to np.select(condlist, choicelist, default). The first condition that is true determines which choice is used.

Errors

• InvalidValue if condlist and choicelist have different lengths
• ShapeMismatch if shapes are incompatible