Hello,

http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2005/n1756.pdf

recommends in 6.18 to add more hash support for some selected
container-like classes, namely

std::basic_string<>
std::vector<>
std::list<>
std::deque<>
std::set<>
std::multiset<>
std::map<>
std::multimap<>

and for the tuple-like

std::pair<>

I would like to increase these lists by the following container-like=20
classes:

std::unordered_set<>
std::unordered_multiset<>
std::unordered_map<>
std::unordered_multimap<>

and for the following tuple-like class

std::tr1::tuple<>

1) There is no real reason, why the newly introduced unordered=20
containers should be viewed as second-class citizens for hashing ;-)

2) Writing a home-grown generalized hasher for tuple<> is sufficiently
complex for programming beginners to justify this addition. I don't see=20
a similar need for e.g. std::tr1::array or std::bitset.

Greetings from Bremen,

Daniel Kr=FCgler

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