Just anonymous function would make a huge difference. Presently, you have to use boost or create new classes (Yes, you need to write a class for any anonymous function! (See Effective Stl, item 46 for more details of why it is recommended)).

So, taken from: http://www2.research.att.com/~bs/C++0xFAQ.html#lambda

You could write something like:

  void f(vector<Record>& v)
  	{
  		vector<int> indices(v.size());
  		int count = 0;
  		fill(indices.begin(),indices.end(),[&count](){ return ++count; });
  
  		// sort indices in the order determined by the name field of the records:
  		std::sort(indices.begin(), indices.end(), [&](int a, int b) { return v[a].name<v[b].name; });
  		// ...
  	}