STLPort multimap problem or mine ?
It is probably my problem, but I don't see what's wrong here :/
I'm trying to delete a specifc element in a multimap based on the key and value since the multimap can store multiple entries with the same key.
Code:
#include <map>
using namespace std;
struct eqstr
{
bool operator()(const char* s1, const char* s2) const
{
return strcmp(s1, s2) == 0;
}
};
typedef multimap<const char*, int, eqstr> map_type;
void eraseElem(const map_type& Map, const char* str, const int key)
{
pair<map_type::const_iterator, map_type::const_iterator> p = Map.equal_range(str);
map_type::const_iterator it = p.first;
while ((it != p.second) && ((*it).second != key)) {
++it;
}
if (it != p.second) {
Map.erase(it); // <- this line doesn't compile
}
}
int main()
{
map_type M;
M.insert(map_type::value_type("H", 1));
M.insert(map_type::value_type("H", 2));
M.insert(map_type::value_type("C", 12));
M.insert(map_type::value_type("C", 13));
M.insert(map_type::value_type("O", 16));
M.insert(map_type::value_type("O", 17));
M.insert(map_type::value_type("O", 18));
M.insert(map_type::value_type("I", 127));
eraseElem(M, "O", 18);
return 0;
}
The error I get is :
'erase' : 3 overloads have no legal conversion for 'this' pointer
I have tried it both with const_iterator and iterator. I can't really see what is wrong, since the only condition that is documented is that it is a dereferenceable iterator in Map. Or is this iterator not in Map ?
