Re: [PATCH] Overload std::distance and std::advance for path::iterator

On 12/12/18 16:14 +, Jonathan Wakely wrote: +void +test04() +{ + std::filesystem::path p = "/a/b/c/d/e/f/g"; + VERIFY( std::distance(p.begin(), p.end()) == 8); + auto it = p.begin(); + std::advance(it, 1); + VERIFY( std::distance(p.begin(), it) == 1 ); + VERIFY( it->native() == "a" ); +

[PATCH] Overload std::distance and std::advance for path::iterator

Although filesystem::path::iterator is only a bidirectional iterator, the underlying sequence has random access iterators (specifically, raw pointers). This means std::distance and std::advance can be implemented more efficiently than the generic versions which apply ++ and -- repeatedly.