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add ClearableHashSetWithSavedHash

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Yuri Dyachenko 2017-04-07 13:34:14 +03:00 committed by alexey-milovidov
parent 6801046eb9
commit ad79394799
1 changed files with 20 additions and 0 deletions
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20
dbms/src/Common/HashTable/ClearableHashSet.h
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@ -68,3 +68,23 @@ public:
this->m_size = 0;
}
};
template
<
typename Key,
typename Hash = DefaultHash<Key>,
typename Grower = HashTableGrower<>,
typename Allocator = HashTableAllocator
>
class ClearableHashSetWithSavedHash: public HashTable<Key, ClearableHashTableCell<Key, HashSetCellWithSavedHash<Key, Hash, ClearableHashSetState>>, Hash, Grower, Allocator>
{
public:
using key_type = Key;
using value_type = typename ClearableHashSetWithSavedHash::cell_type::value_type;
void clear()
{
++this->version;
this->m_size = 0;
}
};