hash_set::rehash (STL/CLR)
重新建置雜湊資料表。
void rehash();
備註
成員函式重建雜湊表,確保 hash_set::load_factor (STL/CLR)() <=hash_set::max_load_factor (STL/CLR)。 否則,雜湊資料表大小增加只需要在插入後。(它的大小會自動縮小)。您會用它來調整雜湊資料表的大小。
範例
// cliext_hash_set_rehash.cpp
// compile with: /clr
#include <cliext/hash_set>
typedef cliext::hash_set<wchar_t> Myhash_set;
int main()
{
Myhash_set c1;
c1.insert(L'a');
c1.insert(L'b');
c1.insert(L'c');
// display initial contents " a b c"
for each (wchar_t elem in c1)
System::Console::Write(" {0}", elem);
System::Console::WriteLine();
// inspect current parameters
System::Console::WriteLine("bucket_count() = {0}", c1.bucket_count());
System::Console::WriteLine("load_factor() = {0}", c1.load_factor());
System::Console::WriteLine("max_load_factor() = {0}",
c1.max_load_factor());
System::Console::WriteLine();
// change max_load_factor and redisplay
c1.max_load_factor(0.25f);
System::Console::WriteLine("bucket_count() = {0}", c1.bucket_count());
System::Console::WriteLine("load_factor() = {0}", c1.load_factor());
System::Console::WriteLine("max_load_factor() = {0}",
c1.max_load_factor());
System::Console::WriteLine();
// rehash and redisplay
c1.rehash(100);
System::Console::WriteLine("bucket_count() = {0}", c1.bucket_count());
System::Console::WriteLine("load_factor() = {0}", c1.load_factor());
System::Console::WriteLine("max_load_factor() = {0}",
c1.max_load_factor());
return (0);
}
需求
標題: <cliext/hash_set>
命名空間: cliext
請參閱
參考
hash_set::bucket_count (STL/CLR)