尽管如此,如果没有特定要求(哈希 DoS 攻击的风险),tsl::hopscotch_map和tsl::hopscotch_set在大多数情况下应该足够了,并且应该是你的默认选择,因为它们通常表现更好。 与std::unordered_map差异 tsl::hopscotch_map 尝试拥有与 std::unordered_map 类似的接口,但存在一些差异。 插入时迭代器失效的行为方式不同。
// cliext_hash_set_const_iterator.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 contents " a b c" Myhash_set::const_ite...
主要是用来计算hash值的,采用FNV哈希算法,还可以用于管理数据结构(如tr1里的std::unordered_set)。默认支持的计算散列值的对象是整型、小数、指针和字符串,其他的结构需要自己定制HASH函数,按照boost的文档指定hash函数的方法很简单,就是重写std::size_t hash_value(T const&)方法或函数,我使用boost库正常,但是VC++...
// cliext_hash_set_bucket_count.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...
In Visual C++ .NET 2003, members of the <hash_map> and <hash_set> header files are no longer in the std namespace, but rather have been moved into the stdext namespace. See The stdext Namespace for more information. Example 複製 // hash_set_rend.cpp // compile with: /EHsc #de...
In Visual C++ .NET 2003, members of the<hash_map>and<hash_set>header files are no longer in the std namespace, but rather have been moved into the stdext namespace. SeeThe stdext Namespacefor more information. Example // hash_set_find.cpp // compile with: /EHsc #define _DEFINE_DEPR...
// cliext_hash_set_begin.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 ele...
In Visual C++ .NET 2003, members of the<hash_map>and<hash_set>header files are no longer in the std namespace, but rather have been moved into the stdext namespace. SeeThe stdext Namespacefor more information. Example // hash_set_crend.cpp // compile with: /EHsc #define _DEFINE_DEP...
In Visual C++ .NET 2003, members of the<hash_map>and<hash_set>header files are no longer in the std namespace, but rather have been moved into the stdext namespace. SeeThe stdext Namespacefor more information. Example 复制 // hash_set_find.cpp // compile with: /EHsc #define _DEFINE...