public void Dispose()
{
_parent?.Dispose();
_parent = default;
_hashset?.Dispose();
_hashset = default;
_src = default;
_selector = default;
Pool <DistinctExprEnumerator> .Return(this);
}
public DistinctExprEnumerator Init(
DistinctExprEnumerable <T, TItem> parent,
IPoolingEnumerator <T> src,
Func <T, TItem> selector,
IEqualityComparer <TItem> comparer)
{
_src = src;
_parent = parent;
_selector = selector;
_hashset = Pool <PoolingDictionary <TItem, int> > .Get().Init(0, comparer ?? EqualityComparer <TItem> .Default);
return(this);
}