Access by key is 77 times slower than by index. If you need to iterate over 100 000 * 20 cells it is really significant overhead.
Of course the final difference will be less. But it will be still significant.
Access by key is 77 times slower than by index. If you need to iterate over 100 000 * 20 cells it is really significant overhead.
Of course the final difference will be less. But it will be still significant.