class_docstr: Attributes
  ----------
  _data : recarray
      Underlying data, as a record array.
  _mask : boolean array
      Mask of the records. A record is masked when all its fields are
      masked.
  _fieldmask : boolean recarray
      Record array of booleans, setting the mask of each individual field
      of each record.
  _fill_value : record
      Filling values for each field.
class_docstr_tok: ["Attributes","--","--","--","--","--","_data",":","recarray","Underlying","data",",","as","a","record","array",".","_mask",":","boolean","array","Mask","of","the","records",".","A","record","is","masked","when","all","its","fields","are","masked",".","_fieldmask",":","boolean","recarray","Record","array","of","booleans",",","setting","the","mask","of","each","individual","field","of","each","record",".","_fill_value",":","record","Filling","values","for","each","field","."]
docstr: Forces the mask to hard.
docstr_tok: ["Forces","the","mask","to","hard","."]
code: def harden_mask(self):
      """
      Forces the mask to hard.
  
      """
      self._hardmask = True
  
imports: from __future__ import division, absolute_import, print_function
  import sys
  import warnings
  import numpy
  import numpy.core.numerictypes
  from numpy.compat import basestring
  from numpy import bool_, dtype, ndarray, recarray, array
  from numpy.core.records import fromarrays, fromrecords
  import numpy.ma
  from numpy.ma import MAError, MaskedArray, masked, nomask, masked_array, getdata, getmaskarray, filled
label_desc: Use image node_id 13 for calling the MaskedRecords obj's underlying member method code with example usage: obj.harden_mask() without return types