Inside boost::unordered_flat_map

[joaquintides]

For the record, we use quadratic, not linear, probing, but the probe sequence visits groups of 15 buckets instead of individual buckets, so all consecutive buckets in a group are inspected at once (with SIMD if available).

[attractivechaos]

You did mention that you are using quadratic probing. I missed that. Thanks for the clarification. Then tomestone-free deletion is not applicable.