{{alias}}( x[, options] )
    Returns a read-only view of the diagonal of a matrix (or stack of
    matrices).

    The order of the dimension indices contained in `options.dims` matters.
    The first element specifies the row-like dimension. The second element
    specifies the column-like dimension.

    Each provided dimension index must reside on the interval [-ndims, ndims-1].

    Parameters
    ----------
    x: ndarray
        Input array.

    options: Object (optional)
        Function options.

    options.k: integer (optional)
        Diagonal offset. The diagonal offset is interpreted as `column - row`.
        Accordingly, when equal to zero, the function returns the main diagonal.
        When greater than zero, the function returns the diagonal above the main
        diagonal. When less than zero, the function returns the diagonal below
        the main diagonal. Default: 0.

    options.dims: ArrayLikeObject<integer> (optional)
        Dimension indices defining the plane from which to extract the
        diagonal. The first element specifies the row-like dimension. The
        second element specifies the column-like dimension. Must contain
        exactly two unique dimension indices. If less than zero, an index is
        resolved relative to the last dimension, with the last dimension
        corresponding to the value `-1`. Default: [ -2, -1 ].

    Returns
    -------
    out: ndarray
        Output array view.

    Examples
    --------
    > var x = {{alias:@stdlib/ndarray/array}}( [ [ 1, 2 ], [ 3, 4 ] ] )
    <ndarray>[ [ 1, 2 ], [ 3, 4 ] ]
    > var y = {{alias}}( x )
    <ndarray>[ 1, 4 ]
    > y = {{alias}}( x, { 'k': 1 } )
    <ndarray>[ 2 ]

    See Also
    --------