[libcxx-commits] [libcxx] [libc++] Simplify the implementation of std::get for pairs (PR #114984)

[A. Jiang via libcxx-commits]

================
@@ -633,42 +633,42 @@ get(const pair<_T1, _T2>&& __p) _NOEXCEPT {
 #if _LIBCPP_STD_VER >= 14
 template <class _T1, class _T2>
 inline _LIBCPP_HIDE_FROM_ABI constexpr _T1& get(pair<_T1, _T2>& __p) _NOEXCEPT {
-  return __get_pair<0>::get(__p);
+  return __p.first;
 }
 
 template <class _T1, class _T2>
 inline _LIBCPP_HIDE_FROM_ABI constexpr _T1 const& get(pair<_T1, _T2> const& __p) _NOEXCEPT {
-  return __get_pair<0>::get(__p);
+  return __p.first;
 }
 
 template <class _T1, class _T2>
 inline _LIBCPP_HIDE_FROM_ABI constexpr _T1&& get(pair<_T1, _T2>&& __p) _NOEXCEPT {
-  return __get_pair<0>::get(std::move(__p));
+  return std::forward<_T1&&>(std::move(__p).first);
----------------
frederick-vs-ja wrote:

Would it be better to just use `static_cast` (ditto below)?
```suggestion
  return static_cast<_T1&&>(__p.first);
```

https://github.com/llvm/llvm-project/pull/114984