Add function for checking indices of leaves which are set to zero #249
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rymnc
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May 16, 2024
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| self.cached_leaves_indices | ||
| .iter() | ||
| .take(next_idx) | ||
| .enumerate() | ||
| .filter(|&(_, &v)| v == 0u8) | ||
| .map(|(idx, _)| idx) | ||
| .collect() |
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not sure if this is the best way to handle finding zero elements
perhaps we can employ a bloom filter and set values there?
quick napkin math suggests that we may use just ~3.5mb of memory vs 33mb
vec approach: 1048576 elements * 32 = 33mb at the cost of good performance
bloom filter: m = ceil((n * log(p)) / log(1 / pow(2, log(2)))) where n = 1048576, p = 1000k = 3.59mb
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hm, I need to think about it
If I think correctly, it will require rebuilding the filter every time we increase next_index? I'm not sure how much cost filter updating
oh, It's just misprint in function name, thank you for noticed |
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Part of #237
In general everything is ready, tests that helped to find problems from #248 are commented out for now.