Get each nth element of iterator range

Question

Is there any standard implementation (meaning stdlib or boost) of an iterator that wraps another iterator and gives only each nth element of it?

I first thought this would be possible with a fitting predicate and boost::filter_iterator, but the predicate gets only the value and not the base iterator, so it cannot tell the distance to the start.

Edit
To give some more information: The iterator should be compatible with functions like std::transform or std::copy. So it should be used like stdlib iterators.

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Answer 1

Boost.Range provides a stride adaptor. Using boost::begin/boost::end would net you the associated iterators.

Answer 2

You can use boost::filter_iterator with predicate like:

 template< typename T, int N >
 struct EveryNth {
    bool operator()(const T&) { return m_count++ % N == 0; }
    EveryNth() : m_count(0) {}
    private:
      int m_count;
 };