Function repeat 

pub fn repeat<T, D>(
    a: &Array<T, D>,
    repeats: usize,
    axis: Option<usize>,
) -> Result<Array<T, IxDyn>, FerrayError>
where
    T: Element,
    D: Dimension,

Repeat elements of an array.

If axis is None, the array is flattened first, then each element is repeated repeats times.

Analogous to numpy.repeat().

Errors

Returns FerrayError::AxisOutOfBounds if the axis is out of bounds.