Accessing a range of elements from a vector
<p>There is a list of objects say for example:- Rectangle objects in a list,  like
std::list. I need to get a list of 50 objects(at a time) from the list and then grab individual elements from each Rectangle as length and breadth and form a string of sizes(length, breadth) of first 50, and then the next 50 and so forth until the end...</p>

<p>I am trying to figure out  a way to code this using boost functionality. </p>
