Re: [Boost-users] transform_iterator requirement on the Iterator?

2009/9/10 Hicham Mouline :

From the docs, I don't see the Iterator argument is required to be default-constructible.

By Table 74 in the standard, all forward iterators are required to be default-constructible. I doubt you want your container iterators to be input iterators, and regardless, lower_bound requires forward iterators.