public static bool Create <TKey, TValue>(GrowOnlyHashTable <TKey, GrowOnlySet <TValue> > ht,
TKey key,
out GrowOnlySet <TValue> set)
{
if (ht.TryGetValue(key, out set) == false)
{
set = SetFactory.New <TValue>( );
ht[key] = set;
return(false);
}
return(true);
}