#include <iostream> #include <string> #include <unordered_map> int main() { // 创建hash对象 std::unordered_map<int, std::string> hashTable; // 添加元素 hashTable[0] = "False"; hashTable[1] = "True"; // 迭代并打印 for (const auto& node : hashTable) { std::cout << "Key ...
需要通过Hash表的并发读写来优化速度，而std::map和std::unordered_map并非线程安全，如果一定要用只能...
(1) std::unordered_map (2) google::[sparse/dense]_hashmap 这些都是单线程的。加上锁可以很容易...
错误C2280 “std::_Hash<std::_Uset_traits<_Kty,std::_Uhash_compare<_Kty,_Hasher,_Keyeq>,_Alloc,false>>::_Hash(const std::_Hash<std::_Uset_traits<_Kty,std::_Uhash_compare<_Kty,_Hasher,_Keyeq>,_Alloc,false>> &)”: 尝试引用已删除的函数 //std::transform(type_name.begin(),...
classhash<std::string> { public: std::size_toperator()(conststd::stringtheKey)const { unsignedlonghashValue=0; intlength=(int)theKey.length(); for(inti=0;i<length;i++) { hashValue=hashValue*5+theKey.at(i); } returnstd::size_t(hashValue); ...
include <hash_set> include <hash_map> using namespace stdext;stdext::hash_set< std::string > st;应该使用比较新的VC编译器就可以，自己去试试吧。
https://docs.microsoft.com/en-us/cpp/preprocessor/hash-include-directive-c-cpp?view=msvc-170&viewFallbackFrom=vs-2019 http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2470.pdf http://eel.is/c++draft/cpp.include https://www.microchip.com/forums/m1125917.aspx...
usingnamespacestd; intmain(){ //建立哈希集 unordered_set<Type> hashset //Type是哈希集中键的变量类型,hashset是该哈希集的名称 //插入键 hashset.insert(key) //删除键 hashset.erase(key) //搜索键 if(hashset.count(key) > 0) cout<<"exist"<<endl; ...
intget(HashMap*map,char* key){ intindex = hash(map, key); Node* curr =map->buckets[index]; while(curr !=NULL) { if(strcmp(curr->key, key) ==0) { returncurr->value; } curr = curr->next; } return-1;// 如果没有找到,返回 -1 ...
C/C++ : converting std::string to const char* I get the error : left of '.c_str' must have class/struct/union type is 'char *' C# to C++ dll - how to pass strings as In/Out parameters to unmanaged functions that expect a string (LPSTR) as a function parameter. C++ int to str...