operators (std::map) operators (std::multimap) operators (std::multiset) operators (std::queue) operators (std::set) operators (std::stack) operators (std::unordered_map) operators (std::unordered_multimap) ope
std::swap(std::unordered_set) std::swap(std::vector) std::tuple_element<std::array> std::tuple_size(std::array) std::unordered_map std::unordered_map::at std::unordered_map::begin std::unordered_map::begin(int) std::unordered_map::bucket std::unordered_map::bucket_count std::unor...
vector是顺序容器,STL中还有一类关联容器其线程安全问题也不容小觑。比如map、unordered_map。 我们可能会有这样一种场景:在并发环境下,收集一些Key-Value,存储在某一个公共的容器中。这里也谈一下不用锁的方案,当然做不到放之四海皆准。它有一些限制条件,只能看是否满足你的需要了。 当有多个写线程对情况下,并发...
points.resize (leaves_.size ()); 134 134 int cp = 0; 135 135 136 - for (typename boost::unordered_map<size_t, Leaf>::const_iterator it = leaves_.begin (); it != leaves_.end (); ++it) 137 - output.points[cp++] = input_->points[it->second.idx]; 136 + for (...
If it is not necessary sorted maps, change std::map to std::unordered_map std::unordered_map is a hash table so it should be faster than std::map when storing many items. std::map<id, token> can be...
<map> <queue> <set> <stack> C++11 <unordered_map> C++11 <unordered_set> <vector> Input/Output: <fstream> <iomanip> <ios> <iosfwd> <iostream> <istream> <ostream> <sstream> <streambuf> Multi-threading: C++11 <atomic> C++11
<map> <queue> <set> <stack> C++11 <unordered_map> C++11 <unordered_set> <vector> Input/Output: <fstream> <iomanip> <ios> <iosfwd> <iostream> <istream> <ostream> <sstream> <streambuf> Multi-threading: C++11 <atomic> C++11
std::hash:unordered_set插入自定义类型的方法 #include <iostream> #include <string_view> #include <unordered_set> using namespace std::literals; int main() { std::cout << "\"A\" #: " << std::hash<std::string_view>{}("A"sv) << '\n'; std::cout << "L\"B\" #: " << ...
resize(n) 从新定义链表的长度,超出原始长度部分用0代替,小于原始部分删除。 resize(n,num) 从新定义链表的长度,超出原始长度部分用num代替。 c1.swap(c2); 将c1和c2交换。 swap(c1,c2); 同上。 c1.merge(c2) 合并2个有序的链表并使之有序,从新放到c1里,释放c2。
map multimap Unordered associative unordered_set (C++11) unordered_multiset (C++11) unordered_map (C++11) unordered_multimap (C++11) Adaptors stack queue priority_queue flat_set (C++23) flat_multiset (C++23) flat_map (C++23) flat_multimap (C++23) Views span (C++20) mdspan (C++23) Iterato...