How to erase in Boost multi_index composite keys?

Question

I was checking on this Boost multi_index composite keys using MEM_FUN

Can someone tell me how to implement erase function for this example ?

Now I am doing

Name_set_by_last::iterator mitchells = names.get<last>().find("mitchell");
names.erase(mitchells );//shows error

Answer 1

names.get<last>().erase(mitchells);