Cider Isn't Darwin Emulation, Really
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283// -*- C++ -*-//===----------------------------- tuple ----------------------------------===////// The LLVM Compiler Infrastructure//// This file is dual licensed under the MIT and the University of Illinois Open// Source Licenses. See LICENSE.TXT for details.////===----------------------------------------------------------------------===//#ifndef _LIBCPP_EXPERIMENTAL_TUPLE#define _LIBCPP_EXPERIMENTAL_TUPLE/* experimental/tuple synopsis// C++1y#include <tuple>namespace std {namespace experimental {inline namespace fundamentals_v1 { // See C++14 20.4.2.5, tuple helper classes template <class T> constexpr size_t tuple_size_v = tuple_size<T>::value; // 3.2.2, Calling a function with a tuple of arguments template <class F, class Tuple> constexpr decltype(auto) apply(F&& f, Tuple&& t);} // namespace fundamentals_v1} // namespace experimental} // namespace std */# include <experimental/__config>#if _LIBCPP_STD_VER > 11# include <tuple># include <utility># include <__functional_base>#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)#pragma GCC system_header#endif_LIBCPP_BEGIN_NAMESPACE_LFTS#ifndef _LIBCPP_HAS_NO_VARIABLE_TEMPLATEStemplate <class _Tp>_LIBCPP_CONSTEXPR size_t tuple_size_v = tuple_size<_Tp>::value;#endiftemplate <class _Fn, class _Tuple, size_t ..._Id>inline _LIBCPP_INLINE_VISIBILITY_LIBCPP_CONSTEXPR_AFTER_CXX11decltype(auto) __apply_tuple_impl(_Fn && __f, _Tuple && __t, integer_sequence<size_t, _Id...>) { return _VSTD::__invoke_constexpr( _VSTD::forward<_Fn>(__f), _VSTD::get<_Id>(_VSTD::forward<_Tuple>(__t))... );}template <class _Fn, class _Tuple>inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11decltype(auto) apply(_Fn && __f, _Tuple && __t) { return _VSTD_LFTS::__apply_tuple_impl( _VSTD::forward<_Fn>(__f), _VSTD::forward<_Tuple>(__t), make_index_sequence<tuple_size<typename decay<_Tuple>::type>::value>() );}_LIBCPP_END_NAMESPACE_LFTS#endif /* _LIBCPP_STD_VER > 11 */#endif /* _LIBCPP_EXPERIMENTAL_TUPLE */