docs: def map(self, func):
  		"""
  		Return a dictionary of the results of func applied to each
  		of the segmentlist objects in self.
  
  		Example:
  
  		>>> x = segmentlistdict()
  		>>> x["H1"] = segmentlist([segment(0, 10)])
  		>>> x["H2"] = segmentlist([segment(5, 15)])
  		>>> x.map(lambda l: 12 in l)
  		{'H2': True, 'H1': False}
  		"""
  		return dict((key, func(value)) for key, value in self.iteritems())