目录1. 关联式容器2. 键值对3. 树形结构的关联式容器3.1 set set的介绍set的使用 3.2 mapmap的介绍map的使用3.3 multiset multiset的介绍multiset的使用3.4 multimapmultimap的介绍multimap的使用1.
I have a map of map std::map< int, std::map<string, double> > myMap; std::map< int, std::map<string, double> >::iterator itr;
I was wondering how do I retrieve the value of a mult开发者_如何学Pythoni map in C++Multimap has internal structure represented as std::pair<T_k, T_v>. It has first, second members. first is the
I have created a hash multi map of following type: key as a pair of string, string and value as long.
My class is like this: class Outgoing { multimap<string,string> outgoing; public: void makeConnection(string key, string value)
I\'m wondering which is more efficient. std::map< String, std::set<int> > or std::multimap< String, int >
Can anyone please tell me that when do we prefer multimap开发者_开发百科 over map?You\'d use a multimap when you want to allow the same key values in your map.
i discovered a strange performance leak in one statement of our application, which runs on a two node cluster currently. It is this very method:
final Multimap<Term, BooleanClause> terms = getTerms(bq); for (Term t : terms.keySet()) { Collection<BooleanClause> C = new HashSet(terms.get(t));
Suppose I have a list of t开发者_如何转开发uples List[(A, B)]. What is the best way to convert it to a multimap, which maps A to Set[B]? Can I build an immutable multimap ?
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