创建unordered_map对象:std::unordered_map<Key, T> unordered_map_name;,其中Key是键的类型,T是值的类型。插入键值对:unordered_map_name[key] = value;,或者使用insert()函数:unordered_map_name.insert(std::make_pair(key, value));查找值:unordered_map_name[key],返回键对应的值。删除键值对:使用erase...
c ++ unordered_map哈希函数无法找到对象 我有一个类计划程序,包含两个对象的UNORDED_MAP。 classScheduler { public: ... private: unordered_map<Time, Activity> schedule; } 我收到一个错误:'列表迭代器不是无法取消的' - 暗示在此处找不到对象: voidappoint(Time &time,conststringactivity) { Timehash...
1.4 set(集合)集合基于红黑树实现,有自动排序的功能,并且不能存放重复的元素。 1.5 unordered_set(无序集合)基于哈希表实现,不能存放重复的元素。 1.5 unordered_map是关联容器,含有带唯一键的键-值对。搜索、插入和元素移除拥有平均常数时间复杂度。 1、C/C++中常用容器功能汇总 1.1 vector(数组)封装动态数组的...
2、关联式容器(Associative container),这是一种已排序(sorted)集合,元素位置取决于其value(或key——如果元素是个key/value pair)和给定的某个排序准则。 set | multiset , map | multimap。 3、无序容器(Unorderd(associative) container),这是一种无序集合(unordered collection),其内每个元素的位置都无关紧...
else if(*(string*)a < *(string*)b) return -1; else return 0; } void test_unordered_map(long& value) { cout << "\ntest_unordered_map()... \n"; unordered_map<long, string> c; char buf[10]; clock_t timeStart = clock(); for(long i=0; i< value; ++i) { try { sn...
inserts an element or assigns to the current element if the key already exists (public member function) emplace constructs element in-place (public member function) emplace_hint constructs elements in-place using a hint (public member function) ...
Reference <unordered_map> header <unordered_map> Unordered map header Header that defines the unordered_map and unordered_multimap container classes: Classes unordered_map Unordered Map (class template) unordered_multimap Unordered Multimap (class template) Functions begin Iterator to beginning (...
MapAllocator::MapAllocator(std::string filename, int flags, size_t size) { MapAllocator::MapAllocator(c10::string_view filename, int flags, size_t size) { TORCH_CHECK(false, "file mapping not supported on your system"); } MapAllocator::MapAllocator(WithFd, std::string filename, int ...
C# Check if Time from textbox is a valid time C# code for get distance between two point using google map C# code for salary calculation C# code in aspx file C# comparing two complex objects and get difference. c# declaring huge strings C# equivalent of JavaScript escape() C# for determin...
in mapgen anyway. } void set_floor_cache_dirty( const int /*z*/ ) override { // Ignored for now. We don't initialize the floor cache in mapgen anyway. } void removed( vehicle &veh, const int /*part*/ ) override { // TODO: check if this is necessary, it probably isn...