def chebyshev(u, v)
      # TODO: Change this to a more specific, custom-made exception.
      raise ArgumentError if u.size != v.size

      abs_differences = u.zip(v).map { |a| (a[0] - a[1]).abs }
      abs_differences.max
    end
def chebyshev(u, v)
      # TODO: Change this to a more specific, custom-made exception.
      raise ArgumentError if u.size != v.size

      abs_differences = u.zip(v).map { |a| (a[0] - a[1]).abs }
      abs_differences.max
    end
call-seq:
     chebyshev(u, v) -> Float

 Arguments:
 - +u+ -> An array of Numeric objects.
 - +v+ -> An array of Numeric objects.
 Returns:
 - The L-infinite distance between +u+ and +v+.
 Raises:
 - +ArgumentError+ -> The sizes of +u+ and +v+ don't match.