DocPair()
{}
- DocPair(DocIterator o_, DocIterator n_)
+ DocPair(DocIterator const & o_, DocIterator const & n_)
: o(o_), n(n_)
{}
- bool operator!=(DocPair const & rhs)
+ bool operator!=(DocPair const & rhs) const
{
// this might not be intuitive but correct for our purpose
return o != rhs.o && n != rhs.n;