docstr: Return True if array is continuous
  
  Parameters
  ----------
  arr : numpy.array | pandas.series
      Must have a dtype
  
  Returns
  -------
  out : bool
      Whether array `arr` is continuous
code: def continuous(arr):
      """
      Return True if array is continuous
  
      Parameters
      ----------
      arr : numpy.array | pandas.series
          Must have a dtype
  
      Returns
      -------
      out : bool
          Whether array `arr` is continuous
      """
      return arr.dtype.kind in "ifuc"
  
imports: from __future__ import annotations
  import inspect
  import itertools
  import warnings
  from collections import defaultdict
  from collections.abc import Iterable, Sequence
  from contextlib import suppress
  from typing import TYPE_CHECKING, cast, overload
  from warnings import warn
  import numpy
  import pandas
  from pandas.core.groupby import DataFrameGroupBy
  from ..exceptions import PlotnineError, PlotnineWarning
  from ..mapping import aes
label_desc: Use image node_id 2 for calling the array_kind obj's underlying member method code with example usage: obj.continuous(arr) and returns: unknown