Method Iterator()->_iterator_prev()

Method _iterator_prev

optional protected mixed _iterator_prev()

Description

This function advances the iterator one step backwards.

Returns

Returns UNDEFINED if there are no more values in the set of elements. It may return any other value if it succeeded in advancing to the previous element. The returned value may be used as the result for _iterator_index() and _iterator_value() if they are not implemented.

See also

_iterator_next(), lfun::_iterator_prev(), iterator_prev(), _iterator_index(), _iterator_value()