this should work, you can still use&nbsp;enumerateIndexesUsingBlock!<div><br></div><div><div><div>framework 'Foundation'</div><div>class NSIndexSet</div><div>&nbsp; def each</div><div>&nbsp; &nbsp; return self.to_enum unless block_given?</div><div>&nbsp; &nbsp; self.enumerateIndexesUsingBlock -&gt; idx, stop { yield idx }</div><div>&nbsp; end</div><div>end</div></div><div><br></div><div><br></div><div><br></div><div>indexes = NSIndexSet.indexSetWithIndexesInRange NSMakeRange(0, 300)</div><div>indexes.each do |idx|</div><div>&nbsp; puts idx</div><div>end</div></div>