From: musiphil@bawi.org   
      
   On 2012-10-04 22:23, jhartzell42@googlemail.com wrote:   
   >   
   > I find myself, when using a vector or a deque, using this combination:   
   >   
   > do_something(std::move(deq.back());   
   > deq.pop_back();   
   >   
   > I wonder if there's any way to combine this concept into a move_back()   
   > function, but I can't think how it would work.   
      
   The answer depends on your desired usage pattern, but   
   maybe something like this?   
      
   template   
   void move_back(C& c, F f)   
   {   
        f(std::move(c.back()));   
        c.pop_back();   
   }   
      
   /* move_back(deq, do_something); */   
      
   > I guess one possibility   
   > is to make it take a reference to the thing:   
   >   
   > template   
   > void move_back(T1 &deq, T2 &thing) {   
   >    thing = std::move(deq.back());   
   >    deq.pop_back();   
   > }   
   >   
   > ....but this is nowhere near as general as I'd like it to be.   
      
   In which ways do you want it to be more general?   
      
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