Re: [Boost-users] [iterator_adaptor] Accessing base class

on Mon Aug 06 2007, Mark Ruzon wrote:

I have defined an iterator adaptor called skip_iterator. I found that I have to write:

skip_iterator() : skip_iterator::iterator_adaptor_(0), m(1) {}

rather than

skip_iterator() : iterator_adaptor_(0), m(1) {}

even though iterator_adaptor_ is a protected typedef inside iterator_adaptor. Will someone explain why I have to qualify the name?

Because it's a dependent type. http://www.codeproject.com/cpp/TwoPhaseLookup.asp http://www.comeaucomputing.com/techtalk/templates/#whymembernotfound HTH, -- Dave Abrahams Boost Consulting http://www.boost-consulting.com The Astoria Seminar ==> http://www.astoriaseminar.com