C++11: Lambda Expressions: Function Objects

Lambda Expressions can be used in place of function objects. For example, as the comp parameter in the std:: sort() template function.

template

  void sort (RandomAccessIterator first, RandomAccessIterator last, Compare comp);

References: http://en.cppreference.com/w/cpp/language/lambda

                      http://www.cplusplus.com/reference/algorithm/sort/