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> We generally recommend that you use absl::flat_hash_map<K, std::unique_ptr<V>> instead of absl::node_hash_map<K, V>.

So what's the point of `node_hash_map` then ?

If you need pointer stability in keys, then node_hash_map has that. Also, it is easier for large scale conversions because it has the same pointer stability guarantees as std::unordered_map

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