[Boost-users] Remove elements from a list

I have a vector<float> source vector and a vector<int> keys. I would like to remove all element in the keys from the source vector. i.e. if the keys array is <1, 3, 4, 5> I would like to remove 1st, 3rd , 4th, 5th element from the source vector. how can I do that? Thank you.