equal_range的返回值是两个迭代器 1. 代码例子 multimap< float,Material_New*, std::greater<float> >::iterator it = m_multi_mater_map.begin(); multimap< float,Material_New*, std::greater<float> >::iterator id = m_multi_mater_map.equal_range(it->first).first; Material_New* p_tmp_mat...
std::pair<iterator, iterator> equal_range( const Key& key ); (1) std::pair<const_iterator, const_iterator> equal_range( const Key& key ) const; (2) template< class K > std::pair<iterator, iterator> equal_range( const K& x ); (3) (C++14 起) template< class K > std::...
所谓“相似”,指的是 multimap 容器具有和 map 相同的特性,即 multimap 容器也用于存储 pair<const K...
std::unordered_multiset::equal_range std::unordered_multiset::erase std::unordered_multiset::extract std::unordered_multiset::find std::unordered_multiset::get_allocator std::unordered_multiset::hash_function std::unordered_multiset::insert std::unordered_multiset::key_eq std::unordered_multiset::...
{ auto range= umap.equal_range(it->first); cout<< it->first <<":"<<endl;while(range.first !=range.second) { cout<<""<< range.first->second <<endl;++range.first; } } getchar();return0; } 运行结果:
auto it=mmap.find(1);// 查找键为1的第一个元素if(it!=mmap.end()){std::cout<<"Found: "<<it->second<<std::endl;}// 查找键为1的所有元素auto range=mmap.equal_range(1);for(auto it=range.first;it!=range.second;++it){std::cout<<it->second<<std::endl;} ...
std::multimap<Key,T,Compare,Allocator>::equal_range From cppreference.com <cpp |container |multimap std::pair<iterator, iterator>equal_range(constKey&key); (1) std::pair<const_iterator, const_iterator>equal_range(constKey&key)const; ...
multimap::insert_range (C++23) multimap::emplace (C++11) multimap::emplace_hint (C++11) multimap::extract (C++17) Lookup multimap::count multimap::find multimap::contains (C++20) multimap::equal_range multimap::lower_bound multimap::upper_bound Observers multimap::key_comp multimap::value_co...
std::pair<int_str_mm_t::iterator,int_str_mm_t::iterator> range; range = mm.equal_range(2);for(int_str_mm_t::iterator it = range.first; it != range.second; ++it) { lst.push_back(it->second); } edit: also, the antecedant of "them" is unclear. I take it to mean the ...
classMyClass{public:MyClass() {std::lock_guard<std::mutex>lock(mtx); mp.emplace(mapsize,'f'); mapsize +=1; ft = std::async([this]() {while(true) { std::lock_guard<std::mutex>lock(mtx);for(inti =0; i < mapsize; i++) {autopr = mp.equal_range(i);for(autoj = pr....