hash_multiset::equal_range (STL/CLR)
查找与指定键匹配的范围。
cliext::pair<iterator, iterator> equal_range(key_type key);
参数
- 键
要搜索的键值。
备注
成员函数返回一对迭代器 cliext::pair<iterator, iterator>( hash_multiset::lower_bound (STL/CLR)hash_multiset::upper_bound (STL/CLR)(key), (key))。 可以使用它来确定当前受控序列中与指定键匹配的元素范围。
示例
// cliext_hash_multiset_equal_range.cpp
// compile with: /clr
#include <cliext/hash_set>
typedef cliext::hash_multiset<wchar_t> Myhash_multiset;
typedef Myhash_multiset::pair_iter_iter Pairii;
int main()
{
Myhash_multiset 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();
// display results of failed search
Pairii pair1 = c1.equal_range(L'x');
System::Console::WriteLine("equal_range(L'x') empty = {0}",
pair1.first == pair1.second);
// display results of successful search
pair1 = c1.equal_range(L'b');
for (; pair1.first != pair1.second; ++pair1.first)
System::Console::Write(" {0}", *pair1.first);
System::Console::WriteLine();
return (0);
}
要求
标头: <cliext/hash_set>
命名空间: cliext
请参见
参考
hash_multiset::count (STL/CLR)