Function slice_f 

pub fn slice_f<R, T, B, D, I>(
    tensor: &TensorAny<R, T, B, D>,
    index: I,
) -> Result<TensorView<'_, T, B, IxD>>
where
    D: DimAPI,
    I: TryInto<AxesIndex<Indexer>, Error = Error>,
    R: DataAPI<Data = B::Raw>,
    B: DeviceAPI<T>,