[GitHub] [doris] adonis0147 commented on pull request #10386: [improvement]Use std::iota to set values of _block_rowids in SegmentIterator::_read_columns_by_index

[GitBox <gi...@apache.org>]

adonis0147 commented on PR #10386:
URL: https://github.com/apache/doris/pull/10386#issuecomment-1165197950

   Hi @mrhhsg , the underlying implementation of `std::iota` is also a loop. Why does this modification take effect?
   
   ```cpp
   template <class _ForwardIterator, class _Tp>
   inline _LIBCPP_INLINE_VISIBILITY
   void
   iota(_ForwardIterator __first, _ForwardIterator __last, _Tp __value_)
   {
       for (; __first != __last; ++__first, (void) ++__value_)
           *__first = __value_;
   }
   ```


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