hash_set::max_load_factor (STL/CLR)

获取或设置最大元素每个存储桶。

    float max_load_factor();
    void max_load_factor(float new_factor);

参数

• new_factor
  存储的新最大负载因素。

备注

第一个成员函数返回当前存储的最大负载因素。您使用它确定最大平均存储桶大小。

第二个成员函数。 new_factor替换存储最大负载因素。不会改作发生直到一个后续插入。

示例

// cliext_hash_set_max_load_factor.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); 
    } 
 

要求

标题: <cliext/hash_set>

命名空间: cliext

请参见

参考

hash_set (STL/CLR)

hash_set::bucket_count (STL/CLR)

hash_set::load_factor (STL/CLR)

hash_set::rehash (STL/CLR)