{{alias}}( arr )
    Tests if an ndarray is read-only.

    Parameters
    ----------
    arr: ndarray
        Input ndarray.

    Returns
    -------
    bool: boolean
        Boolean indicating if an ndarray is read-only.

    Examples
    --------
    > var opts = { 'readonly': true };
    > var x = {{alias:@stdlib/ndarray/array}}( [ 1, 2, 3, 4 ], opts );
    > var bool = {{alias}}( x )
    true
    > opts.readonly = false;
    > x = {{alias:@stdlib/ndarray/array}}( [ 1, 2, 3, 4 ], opts );
    > bool = {{alias}}( x )
    false

    See Also
    --------