定义:
map<int ,char>newmap;
迭代器:std::map<int,cahr>::iterator it=newmap.begin()//newmap.end();
newmap.empty();
newmap.size();
newmap.insert(pair<int,char>(1,'c'));
newmap.insert(newmap.begin(),pair<int,cahr>(1,'c'))
// third insert function version (range insertion):
std::map<char,int> anothermap;
anothermap.insert(mymap.begin(),mymap.find('c'));
输出map的值:
std::cout << "anothermap contains:
";
for (it=anothermap.begin(); it!=anothermap.end(); ++it)
std::cout << it->first << " => " << it->second << '
';
删除erase:
it=mymap.find('b');
mymap.erase (it); // erasing by iterator
mymap.erase ('c'); // erasing by key
it=mymap.find ('e');
mymap.erase ( it, mymap.end() ); // erasing by range
swap:
map1.swap(map2);交换两个map之间的值;
find(key)
it = mymap.find('b'); //返回的是查找到的元素的迭代器位置;