Hi, is there a reason why std::get for std::tuple is not constexpr (in the recent C++0x standard and in its g++ implementation) ? As it is, there is no possibility to query a constexpr std::tuple at compile time. Example: #include <tuple> constexpr int i = 10; constexpr float f = 2.4f; constexpr double d = -10.4; constexpr std::tuple<int, float, double> tup(i, f, d); // In the following line, g++ (snapshot-2011-02-19) throws an error: // std::get ... is not a constexpr function. constexpr int i2 = std::get<0>(tup); Sorry if this is a stupid request. I asked already at http://stackoverflow.com/questions/5087364/how-to-query-a-constexpr-stdtuple-at-compile-time , but nobody really seems to know... There is also a bug report that evtl. may be related (not sure though): http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46507 Thanks & best regards Lars
