How do you erase an element thats inside a map. Not the key but the element the key is pointing to? This doesnt seem to be doing what i want it to.
map<int, vector<int> > my_map;
map<int, vector<int> >::iterator it;
void erase(int num)
{
for(map::iterator item=my_map.begin();item != my_map.end())
{
if(it == num)
my_map.erase(it++);
else
++it;
}
}
looks like there's a couple things, I don't think that would even compile: comparing a map<int, vector<int> >::iterator to an int inside your loop doesn't seem safe to me. As well as not declaring the map type for your iterator.
anyway, see if this is a good starting point:
map<int, vector<int> > my_map; //I assume these are global or in a class, as you had it
map<int, vector<int> >::iterator it;
void erase(int num)
{
for(it = my_map.begin(); it != my_map.end(); it++)
{
if((*it).first == num)
{
my_map.erase(it);
break;
}
}
}I think that's what you were going for, hope that's helpful
~J
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