Hi, I'm writing an application in C++ with gtkmm. I want to have an unordered container, std::unordered_map, in which the key type is Glib::ustring. It means I need choose one of these options: 1. Make the map actually have Glib::ustring objects, and write a hash functor for them (since none is defined by default) 2. Make the map have std::string objects, which have a standard std::hash functor Assume I choose the first option. How do I write the hash function? I see two options: 1. Take a Glib::ustring object, get its collate_key() which is a std::string, and apply the standard string hash on it 2. Take a Glib::ustring object, get its underlying std::string using the raw() method, and apply the standard hash on that string. I mentioned a few different questions here, but the important one is: For the purpose of hashing Glib::ustring for an unordered container, which hash function should I use? A custom one or use collate_key() or use raw()? Does in make a difference whether I use raw() or collate_key()? (in terms of the chance that different strings get the same hash) Thanks in advance, - Anatoly Krasner _______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx https://mail.gnome.org/mailman/listinfo/gtk-list
