This is untested code, but just to visualize paradigm used by boost file system and what Daniel explained: bfs::path p( "." ); bfs::directory_iterator begin( p ), end; for_each( begin, end, boost::bind(&purgeOlder, _1 ) ) Best Regards, Ovanes On Mon, Apr 14, 2008 at 10:07 AM, Daniel Krügler <dsp@bdal.de> wrote:

Brad wrote:

...

Hi guys and gals,

I'm new to boost and this is my first attempt to use bind (big step LOL).

I'm trying to do this:

bfs::path p( "." ); bfs::directory_iterator dir_iter( p ); for_each( dir_iter.begin(), dir_iter.end(), boost::bind( &purgeOlder, _1 ) )

but I get:

purgefiles.cpp:53: error: 'class boost::filesystem::directory_iterator' has no member named 'begin' purgefiles.cpp:53: error: 'class boost::filesystem::directory_iterator' has no member named 'end'

It would appear directory_iterator does not have these members which are common on the other containers, am I missing something? Is there a way to do this using bind?

This has nothing to do with bind. As you say, begin()/end() would be available for a *container*, but - as the name says - directory_iterator is just an iterator, not a container. If you follow the documentation, you will find out, that the default constructed directory_iterator corresponds to "end" and that there exists one further c'tor that accepts a path - this is the one you should use in replacement for begin. For a better understanding of the idea behind that you should compare directory_iterator with existing std iterator adaptors, like the insert iterators or the stream iterators.

HTH & Greetings from Bremen,

Daniel Krügler

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