void erase_if (container& c, pred op)
{
for (auto i (std::begin(c)); i != std::end(c);)
{
if (op(*i))
i = c.erase(i);
else
++i;
}
}
void insert(container& c, int key, int val)
{
auto itr = c.insert(make_pair(key,val));
if(!itr.second)
{
cout << "re-insert " << "[" << key << "," << val << "]" << "!!!" << endl;
#if 0
c.erase(itr.first);
c.insert(make_pair(key,val));
#else
itr.first->second = val;
#endif
}
}