I have a class that hands out a sequence of Things through a

getNextThing() interface, ie.,

struct Thing { };

struct ThingFeed

{

Thing * getNextThing( );

};

returning null when there's no more things. I'd like to be

able to feed this into the Boost range-based algorithms, something

boost::for_each( thingFeedProxy | filter( someCondition ), doSomething );

But it's not clear to me how or if I can represent my ThingFeed as a range.

Any thoughts or advice appreciated.

Thx, Rob