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[SG10] __cpp_lib_tuple_element_t should be defined in <tuple> not <utility>

From: Jonathan Wakely <cxx_at_[hidden]>
Date: Fri, 8 Jun 2018 10:39:03 +0100
The Albuquerque draft of SD-6 gives the header for
__cpp_lib_tuple_element_t as <utility> but it's defined in <tuple> (in all
of the http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3887.pdf
proposal that defined it, C++14, C++17, and the latest WP).

Received on 2018-06-08 11:39:26