.. py:function:: create_mapfoldw(size, acc, condition, default) Return the expression tree for the higher-order construct for mapfoldw creation. :Parameters: **size** : :obj:`EX` Number of iterations. **acc** : :obj:`EX` Number of accumulators. **condition** : :obj:`EX` Initial value of the iteration condition. **default** : :obj:`EX` Default value of the iteration. :Returns: :obj:`ET` .. .. !! processed by numpydoc !!