[misc/calcpaths] Gcc 10.x compile fix for c++17
Without this patch it couldnt compile and gives errors like
In file included from /usr/include/qt/QtCore/qvariant.h:57,
from /usr/include/qt/QtCore/QVariant:1,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedcontext.h:12,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedstring.h:23,
from /home/kde-dev/kde/usr/include/KF5/KI18n/KLocalizedString:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:29,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/variant: In instantiation of ‘constexpr decltype(auto) std::visit(_Visitor&&, _Variants&& ...) [with _Visitor = ObjectCalcer*&; _Variants = {const std::vector<ObjectCalcer*, std::allocator<ObjectCalcer*> >&, std::vector<ObjectCalcer*, std::allocator<ObjectCalcer*> >&}]’:
/home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:209:43: required from here
/usr/include/c++/10.2.0/variant:1702:23: error: ‘const class std::vector<ObjectCalcer*>’ has no member named ‘valueless_by_exception’
1702 | if ((__variants.valueless_by_exception() || ...))
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/10.2.0/variant:1706:22: error: no matching function for call to ‘get<0>(const std::vector<ObjectCalcer*>&)’
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10.2.0/optional:36,
from /usr/include/c++/10.2.0/bits/node_handle.h:39,
from /usr/include/c++/10.2.0/bits/stl_tree.h:72,
from /usr/include/c++/10.2.0/set:60,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/utility:223:5: note: candidate: ‘template<long unsigned int _Int, class _Tp1, class _Tp2> constexpr typename std::tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type& std::get(std::pair<_Tp1, _Tp2>&)’
223 | get(std::pair<_Tp1, _Tp2>& __in) noexcept
| ^~~
/usr/include/c++/10.2.0/utility:223:5: note: template argument deduction/substitution failed:
In file included from /usr/include/qt/QtCore/qvariant.h:57,
from /usr/include/qt/QtCore/QVariant:1,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedcontext.h:12,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedstring.h:23,
from /home/kde-dev/kde/usr/include/KF5/KI18n/KLocalizedString:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:29,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/variant:1706:22: note: types ‘std::pair<_Tp1, _Tp2>’ and ‘const std::vector<ObjectCalcer*>’ have incompatible cv-qualifiers
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10.2.0/optional:36,
from /usr/include/c++/10.2.0/bits/node_handle.h:39,
from /usr/include/c++/10.2.0/bits/stl_tree.h:72,
from /usr/include/c++/10.2.0/set:60,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/utility:228:5: note: candidate: ‘template<long unsigned int _Int, class _Tp1, class _Tp2> constexpr typename std::tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type&& std::get(std::pair<_Tp1, _Tp2>&&)’
228 | get(std::pair<_Tp1, _Tp2>&& __in) noexcept
| ^~~
/usr/include/c++/10.2.0/utility:228:5: note: template argument deduction/substitution failed:
In file included from /usr/include/qt/QtCore/qvariant.h:57,
from /usr/include/qt/QtCore/QVariant:1,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedcontext.h:12,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedstring.h:23,
from /home/kde-dev/kde/usr/include/KF5/KI18n/KLocalizedString:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:29,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/variant:1706:22: note: types ‘std::pair<_Tp1, _Tp2>’ and ‘const std::vector<ObjectCalcer*>’ have incompatible cv-qualifiers
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10.2.0/optional:36,
from /usr/include/c++/10.2.0/bits/node_handle.h:39,
from /usr/include/c++/10.2.0/bits/stl_tree.h:72,
from /usr/include/c++/10.2.0/set:60,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/utility:233:5: note: candidate: ‘template<long unsigned int _Int, class _Tp1, class _Tp2> constexpr const typename std::tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type& std::get(const std::pair<_Tp1, _Tp2>&)’
233 | get(const std::pair<_Tp1, _Tp2>& __in) noexcept
| ^~~
/usr/include/c++/10.2.0/utility:233:5: note: template argument deduction/substitution failed:
In file included from /usr/include/qt/QtCore/qvariant.h:57,
from /usr/include/qt/QtCore/QVariant:1,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedcontext.h:12,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedstring.h:23,
from /home/kde-dev/kde/usr/include/KF5/KI18n/KLocalizedString:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:29,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/variant:1706:22: note: ‘const std::vector<ObjectCalcer*>’ is not derived from ‘const std::pair<_Tp1, _Tp2>’
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10.2.0/optional:36,
from /usr/include/c++/10.2.0/bits/node_handle.h:39,
from /usr/include/c++/10.2.0/bits/stl_tree.h:72,
from /usr/include/c++/10.2.0/set:60,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/utility:238:5: note: candidate: ‘template<long unsigned int _Int, class _Tp1, class _Tp2> constexpr const typename std::tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type&& std::get(const std::pair<_Tp1, _Tp2>&&)’
238 | get(const std::pair<_Tp1, _Tp2>&& __in) noexcept
| ^~~
/usr/include/c++/10.2.0/utility:238:5: note: template argument deduction/substitution failed:
In file included from /usr/include/qt/QtCore/qvariant.h:57,
from /usr/include/qt/QtCore/QVariant:1,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedcontext.h:12,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedstring.h:23,
from /home/kde-dev/kde/usr/include/KF5/KI18n/KLocalizedString:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:29,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/variant:1706:22: note: ‘const std::vector<ObjectCalcer*>’ is not derived from ‘const std::pair<_Tp1, _Tp2>’
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10.2.0/optional:36,
from /usr/include/c++/10.2.0/bits/node_handle.h:39,
from /usr/include/c++/10.2.0/bits/stl_tree.h:72,
from /usr/include/c++/10.2.0/set:60,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/utility:247:5: note: candidate: ‘template<class _Tp, class _Up> constexpr _Tp& std::get(std::pair<_T1, _T2>&)’
247 | get(pair<_Tp, _Up>& __p) noexcept
| ^~~
/usr/include/c++/10.2.0/utility:247:5: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/utility:252:5: note: candidate: ‘template<class _Tp, class _Up> constexpr const _Tp& std::get(const std::pair<_T1, _T2>&)’
252 | get(const pair<_Tp, _Up>& __p) noexcept
| ^~~
/usr/include/c++/10.2.0/utility:252:5: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/utility:257:5: note: candidate: ‘template<class _Tp, class _Up> constexpr _Tp&& std::get(std::pair<_T1, _T2>&&)’
257 | get(pair<_Tp, _Up>&& __p) noexcept
| ^~~
/usr/include/c++/10.2.0/utility:257:5: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/utility:262:5: note: candidate: ‘template<class _Tp, class _Up> constexpr const _Tp&& std::get(const std::pair<_T1, _T2>&&)’
262 | get(const pair<_Tp, _Up>&& __p) noexcept
| ^~~
/usr/include/c++/10.2.0/utility:262:5: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/utility:267:5: note: candidate: ‘template<class _Tp, class _Up> constexpr _Tp& std::get(std::pair<_Up, _Tp>&)’
267 | get(pair<_Up, _Tp>& __p) noexcept
| ^~~
/usr/include/c++/10.2.0/utility:267:5: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/utility:272:5: note: candidate: ‘template<class _Tp, class _Up> constexpr const _Tp& std::get(const std::pair<_Up, _Tp>&)’
272 | get(const pair<_Up, _Tp>& __p) noexcept
| ^~~
/usr/include/c++/10.2.0/utility:272:5: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/utility:277:5: note: candidate: ‘template<class _Tp, class _Up> constexpr _Tp&& std::get(std::pair<_Up, _Tp>&&)’
277 | get(pair<_Up, _Tp>&& __p) noexcept
| ^~~
/usr/include/c++/10.2.0/utility:277:5: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/utility:282:5: note: candidate: ‘template<class _Tp, class _Up> constexpr const _Tp&& std::get(const std::pair<_Up, _Tp>&&)’
282 | get(const pair<_Up, _Tp>&& __p) noexcept
| ^~~
/usr/include/c++/10.2.0/utility:282:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/10.2.0/tuple:39,
from /usr/include/c++/10.2.0/functional:54,
from /usr/include/c++/10.2.0/pstl/glue_algorithm_defs.h:13,
from /usr/include/c++/10.2.0/algorithm:74,
from /usr/include/qt/QtCore/qglobal.h:142,
from /usr/include/qt/QtCore/qatomic.h:41,
from /usr/include/qt/QtCore/qrefcount.h:43,
from /usr/include/qt/QtCore/qbytearray.h:44,
from /usr/include/qt/QtCore/QByteArray:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:25,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/array:334:5: note: candidate: ‘template<long unsigned int _Int, class _Tp, long unsigned int _Nm> constexpr _Tp& std::get(std::array<_Tp, _Nm>&)’
334 | get(array<_Tp, _Nm>& __arr) noexcept
| ^~~
/usr/include/c++/10.2.0/array:334:5: note: template argument deduction/substitution failed:
In file included from /usr/include/qt/QtCore/qvariant.h:57,
from /usr/include/qt/QtCore/QVariant:1,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedcontext.h:12,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedstring.h:23,
from /home/kde-dev/kde/usr/include/KF5/KI18n/KLocalizedString:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:29,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/variant:1706:22: note: types ‘std::array<_Tp, _Nm>’ and ‘const std::vector<ObjectCalcer*>’ have incompatible cv-qualifiers
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10.2.0/tuple:39,
from /usr/include/c++/10.2.0/functional:54,
from /usr/include/c++/10.2.0/pstl/glue_algorithm_defs.h:13,
from /usr/include/c++/10.2.0/algorithm:74,
from /usr/include/qt/QtCore/qglobal.h:142,
from /usr/include/qt/QtCore/qatomic.h:41,
from /usr/include/qt/QtCore/qrefcount.h:43,
from /usr/include/qt/QtCore/qbytearray.h:44,
from /usr/include/qt/QtCore/QByteArray:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:25,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/array:343:5: note: candidate: ‘template<long unsigned int _Int, class _Tp, long unsigned int _Nm> constexpr _Tp&& std::get(std::array<_Tp, _Nm>&&)’
343 | get(array<_Tp, _Nm>&& __arr) noexcept
| ^~~
/usr/include/c++/10.2.0/array:343:5: note: template argument deduction/substitution failed:
In file included from /usr/include/qt/QtCore/qvariant.h:57,
from /usr/include/qt/QtCore/QVariant:1,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedcontext.h:12,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedstring.h:23,
from /home/kde-dev/kde/usr/include/KF5/KI18n/KLocalizedString:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:29,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/variant:1706:22: note: types ‘std::array<_Tp, _Nm>’ and ‘const std::vector<ObjectCalcer*>’ have incompatible cv-qualifiers
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10.2.0/tuple:39,
from /usr/include/c++/10.2.0/functional:54,
from /usr/include/c++/10.2.0/pstl/glue_algorithm_defs.h:13,
from /usr/include/c++/10.2.0/algorithm:74,
from /usr/include/qt/QtCore/qglobal.h:142,
from /usr/include/qt/QtCore/qatomic.h:41,
from /usr/include/qt/QtCore/qrefcount.h:43,
from /usr/include/qt/QtCore/qbytearray.h:44,
from /usr/include/qt/QtCore/QByteArray:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:25,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/array:351:5: note: candidate: ‘template<long unsigned int _Int, class _Tp, long unsigned int _Nm> constexpr const _Tp& std::get(const std::array<_Tp, _Nm>&)’
351 | get(const array<_Tp, _Nm>& __arr) noexcept
| ^~~
/usr/include/c++/10.2.0/array:351:5: note: template argument deduction/substitution failed:
In file included from /usr/include/qt/QtCore/qvariant.h:57,
from /usr/include/qt/QtCore/QVariant:1,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedcontext.h:12,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedstring.h:23,
from /home/kde-dev/kde/usr/include/KF5/KI18n/KLocalizedString:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:29,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/variant:1706:22: note: ‘const std::vector<ObjectCalcer*>’ is not derived from ‘const std::array<_Tp, _Nm>’
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10.2.0/tuple:39,
from /usr/include/c++/10.2.0/functional:54,
from /usr/include/c++/10.2.0/pstl/glue_algorithm_defs.h:13,
from /usr/include/c++/10.2.0/algorithm:74,
from /usr/include/qt/QtCore/qglobal.h:142,
from /usr/include/qt/QtCore/qatomic.h:41,
from /usr/include/qt/QtCore/qrefcount.h:43,
from /usr/include/qt/QtCore/qbytearray.h:44,
from /usr/include/qt/QtCore/QByteArray:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:25,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/array:360:5: note: candidate: ‘template<long unsigned int _Int, class _Tp, long unsigned int _Nm> constexpr const _Tp&& std::get(const std::array<_Tp, _Nm>&&)’
360 | get(const array<_Tp, _Nm>&& __arr) noexcept
| ^~~
/usr/include/c++/10.2.0/array:360:5: note: template argument deduction/substitution failed:
In file included from /usr/include/qt/QtCore/qvariant.h:57,
from /usr/include/qt/QtCore/QVariant:1,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedcontext.h:12,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedstring.h:23,
from /home/kde-dev/kde/usr/include/KF5/KI18n/KLocalizedString:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:29,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/variant:1706:22: note: ‘const std::vector<ObjectCalcer*>’ is not derived from ‘const std::array<_Tp, _Nm>’
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10.2.0/functional:54,
from /usr/include/c++/10.2.0/pstl/glue_algorithm_defs.h:13,
from /usr/include/c++/10.2.0/algorithm:74,
from /usr/include/qt/QtCore/qglobal.h:142,
from /usr/include/qt/QtCore/qatomic.h:41,
from /usr/include/qt/QtCore/qrefcount.h:43,
from /usr/include/qt/QtCore/qbytearray.h:44,
from /usr/include/qt/QtCore/QByteArray:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:25,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/tuple:1294:5: note: candidate: ‘template<long unsigned int __i, class ... _Elements> constexpr std::__tuple_element_t<__i, std::tuple<_Args2 ...> >& std::get(std::tuple<_Args2 ...>&)’
1294 | get(tuple<_Elements...>& __t) noexcept
| ^~~
/usr/include/c++/10.2.0/tuple:1294:5: note: template argument deduction/substitution failed:
In file included from /usr/include/qt/QtCore/qvariant.h:57,
from /usr/include/qt/QtCore/QVariant:1,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedcontext.h:12,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedstring.h:23,
from /home/kde-dev/kde/usr/include/KF5/KI18n/KLocalizedString:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:29,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/variant:1706:22: note: types ‘std::tuple<_Args2 ...>’ and ‘const std::vector<ObjectCalcer*>’ have incompatible cv-qualifiers
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10.2.0/functional:54,
from /usr/include/c++/10.2.0/pstl/glue_algorithm_defs.h:13,
from /usr/include/c++/10.2.0/algorithm:74,
from /usr/include/qt/QtCore/qglobal.h:142,
from /usr/include/qt/QtCore/qatomic.h:41,
from /usr/include/qt/QtCore/qrefcount.h:43,
from /usr/include/qt/QtCore/qbytearray.h:44,
from /usr/include/qt/QtCore/QByteArray:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:25,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/tuple:1300:5: note: candidate: ‘template<long unsigned int __i, class ... _Elements> constexpr std::__tuple_element_t<__i, std::tuple<_Args2 ...> >& std::get(const std::tuple<_Args2 ...>&)’
1300 | get(const tuple<_Elements...>& __t) noexcept
| ^~~
/usr/include/c++/10.2.0/tuple:1300:5: note: template argument deduction/substitution failed:
In file included from /usr/include/qt/QtCore/qvariant.h:57,
from /usr/include/qt/QtCore/QVariant:1,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedcontext.h:12,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedstring.h:23,
from /home/kde-dev/kde/usr/include/KF5/KI18n/KLocalizedString:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:29,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/variant:1706:22: note: ‘const std::vector<ObjectCalcer*>’ is not derived from ‘const std::tuple<_Args2 ...>’
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10.2.0/functional:54,
from /usr/include/c++/10.2.0/pstl/glue_algorithm_defs.h:13,
from /usr/include/c++/10.2.0/algorithm:74,
from /usr/include/qt/QtCore/qglobal.h:142,
from /usr/include/qt/QtCore/qatomic.h:41,
from /usr/include/qt/QtCore/qrefcount.h:43,
from /usr/include/qt/QtCore/qbytearray.h:44,
from /usr/include/qt/QtCore/QByteArray:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:25,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/tuple:1306:5: note: candidate: ‘template<long unsigned int __i, class ... _Elements> constexpr std::__tuple_element_t<__i, std::tuple<_Args2 ...> >&& std::get(std::tuple<_Args2 ...>&&)’
1306 | get(tuple<_Elements...>&& __t) noexcept
| ^~~
/usr/include/c++/10.2.0/tuple:1306:5: note: template argument deduction/substitution failed:
In file included from /usr/include/qt/QtCore/qvariant.h:57,
from /usr/include/qt/QtCore/QVariant:1,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedcontext.h:12,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedstring.h:23,
from /home/kde-dev/kde/usr/include/KF5/KI18n/KLocalizedString:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:29,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/variant:1706:22: note: types ‘std::tuple<_Args2 ...>’ and ‘const std::vector<ObjectCalcer*>’ have incompatible cv-qualifiers
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10.2.0/functional:54,
from /usr/include/c++/10.2.0/pstl/glue_algorithm_defs.h:13,
from /usr/include/c++/10.2.0/algorithm:74,
from /usr/include/qt/QtCore/qglobal.h:142,
from /usr/include/qt/QtCore/qatomic.h:41,
from /usr/include/qt/QtCore/qrefcount.h:43,
from /usr/include/qt/QtCore/qbytearray.h:44,
from /usr/include/qt/QtCore/QByteArray:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:25,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/tuple:1315:5: note: candidate: ‘template<long unsigned int __i, class ... _Elements> constexpr std::__tuple_element_t<__i, std::tuple<_Args2 ...> >&& std::get(const std::tuple<_Args2 ...>&&)’
1315 | get(const tuple<_Elements...>&& __t) noexcept
| ^~~
/usr/include/c++/10.2.0/tuple:1315:5: note: template argument deduction/substitution failed:
In file included from /usr/include/qt/QtCore/qvariant.h:57,
from /usr/include/qt/QtCore/QVariant:1,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedcontext.h:12,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedstring.h:23,
from /home/kde-dev/kde/usr/include/KF5/KI18n/KLocalizedString:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:29,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/variant:1706:22: note: ‘const std::vector<ObjectCalcer*>’ is not derived from ‘const std::tuple<_Args2 ...>’
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10.2.0/functional:54,
from /usr/include/c++/10.2.0/pstl/glue_algorithm_defs.h:13,
from /usr/include/c++/10.2.0/algorithm:74,
from /usr/include/qt/QtCore/qglobal.h:142,
from /usr/include/qt/QtCore/qatomic.h:41,
from /usr/include/qt/QtCore/qrefcount.h:43,
from /usr/include/qt/QtCore/qbytearray.h:44,
from /usr/include/qt/QtCore/QByteArray:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:25,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/tuple:1338:5: note: candidate: ‘template<class _Tp, class ... _Types> constexpr _Tp& std::get(std::tuple<_Args2 ...>&)’
1338 | get(tuple<_Types...>& __t) noexcept
| ^~~
/usr/include/c++/10.2.0/tuple:1338:5: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/tuple:1344:5: note: candidate: ‘template<class _Tp, class ... _Types> constexpr _Tp&& std::get(std::tuple<_Args2 ...>&&)’
1344 | get(tuple<_Types...>&& __t) noexcept
| ^~~
/usr/include/c++/10.2.0/tuple:1344:5: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/tuple:1350:5: note: candidate: ‘template<class _Tp, class ... _Types> constexpr const _Tp& std::get(const std::tuple<_Args2 ...>&)’
1350 | get(const tuple<_Types...>& __t) noexcept
| ^~~
/usr/include/c++/10.2.0/tuple:1350:5: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/tuple:1357:5: note: candidate: ‘template<class _Tp, class ... _Types> constexpr const _Tp&& std::get(const std::tuple<_Args2 ...>&&)’
1357 | get(const tuple<_Types...>&& __t) noexcept
| ^~~
/usr/include/c++/10.2.0/tuple:1357:5: note: template argument deduction/substitution failed:
In file included from /usr/include/qt/QtCore/qvariant.h:57,
from /usr/include/qt/QtCore/QVariant:1,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedcontext.h:12,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedstring.h:23,
from /home/kde-dev/kde/usr/include/KF5/KI18n/KLocalizedString:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:29,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/variant:1644:5: note: candidate: ‘template<long unsigned int _Np, class ... _Types> constexpr std::variant_alternative_t<_Np, std::variant<_Types ...> >& std::get(std::variant<_Types ...>&)’
1644 | get(variant<_Types...>& __v)
| ^~~
/usr/include/c++/10.2.0/variant:1644:5: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/variant:1706:22: note: types ‘std::variant<_Types ...>’ and ‘const std::vector<ObjectCalcer*>’ have incompatible cv-qualifiers
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/10.2.0/variant:1655:5: note: candidate: ‘template<long unsigned int _Np, class ... _Types> constexpr std::variant_alternative_t<_Np, std::variant<_Types ...> >&& std::get(std::variant<_Types ...>&&)’
1655 | get(variant<_Types...>&& __v)
| ^~~
/usr/include/c++/10.2.0/variant:1655:5: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/variant:1706:22: note: types ‘std::variant<_Types ...>’ and ‘const std::vector<ObjectCalcer*>’ have incompatible cv-qualifiers
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/10.2.0/variant:1666:5: note: candidate: ‘template<long unsigned int _Np, class ... _Types> constexpr std::variant_alternative_t<_Np, std::variant<_Types ...> >& std::get(const std::variant<_Types ...>&)’
1666 | get(const variant<_Types...>& __v)
| ^~~
/usr/include/c++/10.2.0/variant:1666:5: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/variant:1706:22: note: ‘const std::vector<ObjectCalcer*>’ is not derived from ‘const std::variant<_Types ...>’
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/10.2.0/variant:1677:5: note: candidate: ‘template<long unsigned int _Np, class ... _Types> constexpr std::variant_alternative_t<_Np, std::variant<_Types ...> >&& std::get(const std::variant<_Types ...>&&)’
1677 | get(const variant<_Types...>&& __v)
| ^~~
/usr/include/c++/10.2.0/variant:1677:5: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/variant:1706:22: note: ‘const std::vector<ObjectCalcer*>’ is not derived from ‘const std::variant<_Types ...>’
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/10.2.0/variant:1071:20: note: candidate: ‘template<class _Tp, class ... _Types> constexpr _Tp& std::get(std::variant<_Types ...>&)’
1071 | constexpr _Tp& get(variant<_Types...>& __v)
| ^~~
/usr/include/c++/10.2.0/variant:1071:20: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/variant:1080:21: note: candidate: ‘template<class _Tp, class ... _Types> constexpr _Tp&& std::get(std::variant<_Types ...>&&)’
1080 | constexpr _Tp&& get(variant<_Types...>&& __v)
| ^~~
/usr/include/c++/10.2.0/variant:1080:21: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/variant:1090:26: note: candidate: ‘template<class _Tp, class ... _Types> constexpr const _Tp& std::get(const std::variant<_Types ...>&)’
1090 | constexpr const _Tp& get(const variant<_Types...>& __v)
| ^~~
/usr/include/c++/10.2.0/variant:1090:26: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/variant:1099:27: note: candidate: ‘template<class _Tp, class ... _Types> constexpr const _Tp&& std::get(const std::variant<_Types ...>&&)’
1099 | constexpr const _Tp&& get(const variant<_Types...>&& __v)
| ^~~
/usr/include/c++/10.2.0/variant:1099:27: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/variant:1706:22: error: no matching function for call to ‘get<0>(const std::vector<ObjectCalcer*>&)’
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10.2.0/optional:36,
from /usr/include/c++/10.2.0/bits/node_handle.h:39,
from /usr/include/c++/10.2.0/bits/stl_tree.h:72,
from /usr/include/c++/10.2.0/set:60,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/utility:223:5: note: candidate: ‘template<long unsigned int _Int, class _Tp1, class _Tp2> constexpr typename std::tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type& std::get(std::pair<_Tp1, _Tp2>&)’
223 | get(std::pair<_Tp1, _Tp2>& __in) noexcept
| ^~~
/usr/include/c++/10.2.0/utility:223:5: note: template argument deduction/substitution failed:
In file included from /usr/include/qt/QtCore/qvariant.h:57,
from /usr/include/qt/QtCore/QVariant:1,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedcontext.h:12,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedstring.h:23,
from /home/kde-dev/kde/usr/include/KF5/KI18n/KLocalizedString:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:29,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/variant:1706:22: note: types ‘std::pair<_Tp1, _Tp2>’ and ‘const std::vector<ObjectCalcer*>’ have incompatible cv-qualifiers
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10.2.0/optional:36,
from /usr/include/c++/10.2.0/bits/node_handle.h:39,
from /usr/include/c++/10.2.0/bits/stl_tree.h:72,
from /usr/include/c++/10.2.0/set:60,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/utility:228:5: note: candidate: ‘template<long unsigned int _Int, class _Tp1, class _Tp2> constexpr typename std::tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type&& std::get(std::pair<_Tp1, _Tp2>&&)’
228 | get(std::pair<_Tp1, _Tp2>&& __in) noexcept
| ^~~
/usr/include/c++/10.2.0/utility:228:5: note: template argument deduction/substitution failed:
In file included from /usr/include/qt/QtCore/qvariant.h:57,
from /usr/include/qt/QtCore/QVariant:1,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedcontext.h:12,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedstring.h:23,
from /home/kde-dev/kde/usr/include/KF5/KI18n/KLocalizedString:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:29,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/variant:1706:22: note: types ‘std::pair<_Tp1, _Tp2>’ and ‘const std::vector<ObjectCalcer*>’ have incompatible cv-qualifiers
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10.2.0/optional:36,
from /usr/include/c++/10.2.0/bits/node_handle.h:39,
from /usr/include/c++/10.2.0/bits/stl_tree.h:72,
from /usr/include/c++/10.2.0/set:60,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/utility:233:5: note: candidate: ‘template<long unsigned int _Int, class _Tp1, class _Tp2> constexpr const typename std::tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type& std::get(const std::pair<_Tp1, _Tp2>&)’
233 | get(const std::pair<_Tp1, _Tp2>& __in) noexcept
| ^~~
/usr/include/c++/10.2.0/utility:233:5: note: template argument deduction/substitution failed:
In file included from /usr/include/qt/QtCore/qvariant.h:57,
from /usr/include/qt/QtCore/QVariant:1,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedcontext.h:12,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedstring.h:23,
from /home/kde-dev/kde/usr/include/KF5/KI18n/KLocalizedString:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:29,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/variant:1706:22: note: ‘const std::vector<ObjectCalcer*>’ is not derived from ‘const std::pair<_Tp1, _Tp2>’
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10.2.0/optional:36,
from /usr/include/c++/10.2.0/bits/node_handle.h:39,
from /usr/include/c++/10.2.0/bits/stl_tree.h:72,
from /usr/include/c++/10.2.0/set:60,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/utility:238:5: note: candidate: ‘template<long unsigned int _Int, class _Tp1, class _Tp2> constexpr const typename std::tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type&& std::get(const std::pair<_Tp1, _Tp2>&&)’
238 | get(const std::pair<_Tp1, _Tp2>&& __in) noexcept
| ^~~
/usr/include/c++/10.2.0/utility:238:5: note: template argument deduction/substitution failed:
In file included from /usr/include/qt/QtCore/qvariant.h:57,
from /usr/include/qt/QtCore/QVariant:1,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedcontext.h:12,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedstring.h:23,
from /home/kde-dev/kde/usr/include/KF5/KI18n/KLocalizedString:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:29,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/variant:1706:22: note: ‘const std::vector<ObjectCalcer*>’ is not derived from ‘const std::pair<_Tp1, _Tp2>’
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10.2.0/optional:36,
from /usr/include/c++/10.2.0/bits/node_handle.h:39,
from /usr/include/c++/10.2.0/bits/stl_tree.h:72,
from /usr/include/c++/10.2.0/set:60,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/utility:247:5: note: candidate: ‘template<class _Tp, class _Up> constexpr _Tp& std::get(std::pair<_T1, _T2>&)’
247 | get(pair<_Tp, _Up>& __p) noexcept
| ^~~
/usr/include/c++/10.2.0/utility:247:5: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/utility:252:5: note: candidate: ‘template<class _Tp, class _Up> constexpr const _Tp& std::get(const std::pair<_T1, _T2>&)’
252 | get(const pair<_Tp, _Up>& __p) noexcept
| ^~~
/usr/include/c++/10.2.0/utility:252:5: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/utility:257:5: note: candidate: ‘template<class _Tp, class _Up> constexpr _Tp&& std::get(std::pair<_T1, _T2>&&)’
257 | get(pair<_Tp, _Up>&& __p) noexcept
| ^~~
/usr/include/c++/10.2.0/utility:257:5: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/utility:262:5: note: candidate: ‘template<class _Tp, class _Up> constexpr const _Tp&& std::get(const std::pair<_T1, _T2>&&)’
262 | get(const pair<_Tp, _Up>&& __p) noexcept
| ^~~
/usr/include/c++/10.2.0/utility:262:5: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/utility:267:5: note: candidate: ‘template<class _Tp, class _Up> constexpr _Tp& std::get(std::pair<_Up, _Tp>&)’
267 | get(pair<_Up, _Tp>& __p) noexcept
| ^~~
/usr/include/c++/10.2.0/utility:267:5: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/utility:272:5: note: candidate: ‘template<class _Tp, class _Up> constexpr const _Tp& std::get(const std::pair<_Up, _Tp>&)’
272 | get(const pair<_Up, _Tp>& __p) noexcept
| ^~~
/usr/include/c++/10.2.0/utility:272:5: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/utility:277:5: note: candidate: ‘template<class _Tp, class _Up> constexpr _Tp&& std::get(std::pair<_Up, _Tp>&&)’
277 | get(pair<_Up, _Tp>&& __p) noexcept
| ^~~
/usr/include/c++/10.2.0/utility:277:5: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/utility:282:5: note: candidate: ‘template<class _Tp, class _Up> constexpr const _Tp&& std::get(const std::pair<_Up, _Tp>&&)’
282 | get(const pair<_Up, _Tp>&& __p) noexcept
| ^~~
/usr/include/c++/10.2.0/utility:282:5: note: template argument deduction/substitution failed:
In file included from /usr/include/c++/10.2.0/tuple:39,
from /usr/include/c++/10.2.0/functional:54,
from /usr/include/c++/10.2.0/pstl/glue_algorithm_defs.h:13,
from /usr/include/c++/10.2.0/algorithm:74,
from /usr/include/qt/QtCore/qglobal.h:142,
from /usr/include/qt/QtCore/qatomic.h:41,
from /usr/include/qt/QtCore/qrefcount.h:43,
from /usr/include/qt/QtCore/qbytearray.h:44,
from /usr/include/qt/QtCore/QByteArray:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:25,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/array:334:5: note: candidate: ‘template<long unsigned int _Int, class _Tp, long unsigned int _Nm> constexpr _Tp& std::get(std::array<_Tp, _Nm>&)’
334 | get(array<_Tp, _Nm>& __arr) noexcept
| ^~~
/usr/include/c++/10.2.0/array:334:5: note: template argument deduction/substitution failed:
In file included from /usr/include/qt/QtCore/qvariant.h:57,
from /usr/include/qt/QtCore/QVariant:1,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedcontext.h:12,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedstring.h:23,
from /home/kde-dev/kde/usr/include/KF5/KI18n/KLocalizedString:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:29,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/variant:1706:22: note: types ‘std::array<_Tp, _Nm>’ and ‘const std::vector<ObjectCalcer*>’ have incompatible cv-qualifiers
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10.2.0/tuple:39,
from /usr/include/c++/10.2.0/functional:54,
from /usr/include/c++/10.2.0/pstl/glue_algorithm_defs.h:13,
from /usr/include/c++/10.2.0/algorithm:74,
from /usr/include/qt/QtCore/qglobal.h:142,
from /usr/include/qt/QtCore/qatomic.h:41,
from /usr/include/qt/QtCore/qrefcount.h:43,
from /usr/include/qt/QtCore/qbytearray.h:44,
from /usr/include/qt/QtCore/QByteArray:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:25,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/array:343:5: note: candidate: ‘template<long unsigned int _Int, class _Tp, long unsigned int _Nm> constexpr _Tp&& std::get(std::array<_Tp, _Nm>&&)’
343 | get(array<_Tp, _Nm>&& __arr) noexcept
| ^~~
/usr/include/c++/10.2.0/array:343:5: note: template argument deduction/substitution failed:
In file included from /usr/include/qt/QtCore/qvariant.h:57,
from /usr/include/qt/QtCore/QVariant:1,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedcontext.h:12,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedstring.h:23,
from /home/kde-dev/kde/usr/include/KF5/KI18n/KLocalizedString:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:29,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/variant:1706:22: note: types ‘std::array<_Tp, _Nm>’ and ‘const std::vector<ObjectCalcer*>’ have incompatible cv-qualifiers
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10.2.0/tuple:39,
from /usr/include/c++/10.2.0/functional:54,
from /usr/include/c++/10.2.0/pstl/glue_algorithm_defs.h:13,
from /usr/include/c++/10.2.0/algorithm:74,
from /usr/include/qt/QtCore/qglobal.h:142,
from /usr/include/qt/QtCore/qatomic.h:41,
from /usr/include/qt/QtCore/qrefcount.h:43,
from /usr/include/qt/QtCore/qbytearray.h:44,
from /usr/include/qt/QtCore/QByteArray:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:25,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/array:351:5: note: candidate: ‘template<long unsigned int _Int, class _Tp, long unsigned int _Nm> constexpr const _Tp& std::get(const std::array<_Tp, _Nm>&)’
351 | get(const array<_Tp, _Nm>& __arr) noexcept
| ^~~
/usr/include/c++/10.2.0/array:351:5: note: template argument deduction/substitution failed:
In file included from /usr/include/qt/QtCore/qvariant.h:57,
from /usr/include/qt/QtCore/QVariant:1,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedcontext.h:12,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedstring.h:23,
from /home/kde-dev/kde/usr/include/KF5/KI18n/KLocalizedString:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:29,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/variant:1706:22: note: ‘const std::vector<ObjectCalcer*>’ is not derived from ‘const std::array<_Tp, _Nm>’
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10.2.0/tuple:39,
from /usr/include/c++/10.2.0/functional:54,
from /usr/include/c++/10.2.0/pstl/glue_algorithm_defs.h:13,
from /usr/include/c++/10.2.0/algorithm:74,
from /usr/include/qt/QtCore/qglobal.h:142,
from /usr/include/qt/QtCore/qatomic.h:41,
from /usr/include/qt/QtCore/qrefcount.h:43,
from /usr/include/qt/QtCore/qbytearray.h:44,
from /usr/include/qt/QtCore/QByteArray:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:25,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/array:360:5: note: candidate: ‘template<long unsigned int _Int, class _Tp, long unsigned int _Nm> constexpr const _Tp&& std::get(const std::array<_Tp, _Nm>&&)’
360 | get(const array<_Tp, _Nm>&& __arr) noexcept
| ^~~
/usr/include/c++/10.2.0/array:360:5: note: template argument deduction/substitution failed:
In file included from /usr/include/qt/QtCore/qvariant.h:57,
from /usr/include/qt/QtCore/QVariant:1,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedcontext.h:12,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedstring.h:23,
from /home/kde-dev/kde/usr/include/KF5/KI18n/KLocalizedString:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:29,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/variant:1706:22: note: ‘const std::vector<ObjectCalcer*>’ is not derived from ‘const std::array<_Tp, _Nm>’
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10.2.0/functional:54,
from /usr/include/c++/10.2.0/pstl/glue_algorithm_defs.h:13,
from /usr/include/c++/10.2.0/algorithm:74,
from /usr/include/qt/QtCore/qglobal.h:142,
from /usr/include/qt/QtCore/qatomic.h:41,
from /usr/include/qt/QtCore/qrefcount.h:43,
from /usr/include/qt/QtCore/qbytearray.h:44,
from /usr/include/qt/QtCore/QByteArray:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:25,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/tuple:1294:5: note: candidate: ‘template<long unsigned int __i, class ... _Elements> constexpr std::__tuple_element_t<__i, std::tuple<_Args2 ...> >& std::get(std::tuple<_Args2 ...>&)’
1294 | get(tuple<_Elements...>& __t) noexcept
| ^~~
/usr/include/c++/10.2.0/tuple:1294:5: note: template argument deduction/substitution failed:
In file included from /usr/include/qt/QtCore/qvariant.h:57,
from /usr/include/qt/QtCore/QVariant:1,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedcontext.h:12,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedstring.h:23,
from /home/kde-dev/kde/usr/include/KF5/KI18n/KLocalizedString:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:29,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/variant:1706:22: note: types ‘std::tuple<_Args2 ...>’ and ‘const std::vector<ObjectCalcer*>’ have incompatible cv-qualifiers
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10.2.0/functional:54,
from /usr/include/c++/10.2.0/pstl/glue_algorithm_defs.h:13,
from /usr/include/c++/10.2.0/algorithm:74,
from /usr/include/qt/QtCore/qglobal.h:142,
from /usr/include/qt/QtCore/qatomic.h:41,
from /usr/include/qt/QtCore/qrefcount.h:43,
from /usr/include/qt/QtCore/qbytearray.h:44,
from /usr/include/qt/QtCore/QByteArray:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:25,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/tuple:1300:5: note: candidate: ‘template<long unsigned int __i, class ... _Elements> constexpr std::__tuple_element_t<__i, std::tuple<_Args2 ...> >& std::get(const std::tuple<_Args2 ...>&)’
1300 | get(const tuple<_Elements...>& __t) noexcept
| ^~~
/usr/include/c++/10.2.0/tuple:1300:5: note: template argument deduction/substitution failed:
In file included from /usr/include/qt/QtCore/qvariant.h:57,
from /usr/include/qt/QtCore/QVariant:1,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedcontext.h:12,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedstring.h:23,
from /home/kde-dev/kde/usr/include/KF5/KI18n/KLocalizedString:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:29,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/variant:1706:22: note: ‘const std::vector<ObjectCalcer*>’ is not derived from ‘const std::tuple<_Args2 ...>’
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10.2.0/functional:54,
from /usr/include/c++/10.2.0/pstl/glue_algorithm_defs.h:13,
from /usr/include/c++/10.2.0/algorithm:74,
from /usr/include/qt/QtCore/qglobal.h:142,
from /usr/include/qt/QtCore/qatomic.h:41,
from /usr/include/qt/QtCore/qrefcount.h:43,
from /usr/include/qt/QtCore/qbytearray.h:44,
from /usr/include/qt/QtCore/QByteArray:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:25,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/tuple:1306:5: note: candidate: ‘template<long unsigned int __i, class ... _Elements> constexpr std::__tuple_element_t<__i, std::tuple<_Args2 ...> >&& std::get(std::tuple<_Args2 ...>&&)’
1306 | get(tuple<_Elements...>&& __t) noexcept
| ^~~
/usr/include/c++/10.2.0/tuple:1306:5: note: template argument deduction/substitution failed:
In file included from /usr/include/qt/QtCore/qvariant.h:57,
from /usr/include/qt/QtCore/QVariant:1,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedcontext.h:12,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedstring.h:23,
from /home/kde-dev/kde/usr/include/KF5/KI18n/KLocalizedString:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:29,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/variant:1706:22: note: types ‘std::tuple<_Args2 ...>’ and ‘const std::vector<ObjectCalcer*>’ have incompatible cv-qualifiers
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10.2.0/functional:54,
from /usr/include/c++/10.2.0/pstl/glue_algorithm_defs.h:13,
from /usr/include/c++/10.2.0/algorithm:74,
from /usr/include/qt/QtCore/qglobal.h:142,
from /usr/include/qt/QtCore/qatomic.h:41,
from /usr/include/qt/QtCore/qrefcount.h:43,
from /usr/include/qt/QtCore/qbytearray.h:44,
from /usr/include/qt/QtCore/QByteArray:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:25,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/tuple:1315:5: note: candidate: ‘template<long unsigned int __i, class ... _Elements> constexpr std::__tuple_element_t<__i, std::tuple<_Args2 ...> >&& std::get(const std::tuple<_Args2 ...>&&)’
1315 | get(const tuple<_Elements...>&& __t) noexcept
| ^~~
/usr/include/c++/10.2.0/tuple:1315:5: note: template argument deduction/substitution failed:
In file included from /usr/include/qt/QtCore/qvariant.h:57,
from /usr/include/qt/QtCore/QVariant:1,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedcontext.h:12,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedstring.h:23,
from /home/kde-dev/kde/usr/include/KF5/KI18n/KLocalizedString:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:29,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/variant:1706:22: note: ‘const std::vector<ObjectCalcer*>’ is not derived from ‘const std::tuple<_Args2 ...>’
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/10.2.0/functional:54,
from /usr/include/c++/10.2.0/pstl/glue_algorithm_defs.h:13,
from /usr/include/c++/10.2.0/algorithm:74,
from /usr/include/qt/QtCore/qglobal.h:142,
from /usr/include/qt/QtCore/qatomic.h:41,
from /usr/include/qt/QtCore/qrefcount.h:43,
from /usr/include/qt/QtCore/qbytearray.h:44,
from /usr/include/qt/QtCore/QByteArray:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:25,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/tuple:1338:5: note: candidate: ‘template<class _Tp, class ... _Types> constexpr _Tp& std::get(std::tuple<_Args2 ...>&)’
1338 | get(tuple<_Types...>& __t) noexcept
| ^~~
/usr/include/c++/10.2.0/tuple:1338:5: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/tuple:1344:5: note: candidate: ‘template<class _Tp, class ... _Types> constexpr _Tp&& std::get(std::tuple<_Args2 ...>&&)’
1344 | get(tuple<_Types...>&& __t) noexcept
| ^~~
/usr/include/c++/10.2.0/tuple:1344:5: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/tuple:1350:5: note: candidate: ‘template<class _Tp, class ... _Types> constexpr const _Tp& std::get(const std::tuple<_Args2 ...>&)’
1350 | get(const tuple<_Types...>& __t) noexcept
| ^~~
/usr/include/c++/10.2.0/tuple:1350:5: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/tuple:1357:5: note: candidate: ‘template<class _Tp, class ... _Types> constexpr const _Tp&& std::get(const std::tuple<_Args2 ...>&&)’
1357 | get(const tuple<_Types...>&& __t) noexcept
| ^~~
/usr/include/c++/10.2.0/tuple:1357:5: note: template argument deduction/substitution failed:
In file included from /usr/include/qt/QtCore/qvariant.h:57,
from /usr/include/qt/QtCore/QVariant:1,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedcontext.h:12,
from /home/kde-dev/kde/usr/include/KF5/KI18n/klocalizedstring.h:23,
from /home/kde-dev/kde/usr/include/KF5/KI18n/KLocalizedString:1,
from /home/kde-dev/kde/src/education/kig/misc/../objects/common.h:29,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.h:21,
from /home/kde-dev/kde/src/education/kig/misc/calcpaths.cc:18:
/usr/include/c++/10.2.0/variant:1644:5: note: candidate: ‘template<long unsigned int _Np, class ... _Types> constexpr std::variant_alternative_t<_Np, std::variant<_Types ...> >& std::get(std::variant<_Types ...>&)’
1644 | get(variant<_Types...>& __v)
| ^~~
/usr/include/c++/10.2.0/variant:1644:5: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/variant:1706:22: note: types ‘std::variant<_Types ...>’ and ‘const std::vector<ObjectCalcer*>’ have incompatible cv-qualifiers
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/10.2.0/variant:1655:5: note: candidate: ‘template<long unsigned int _Np, class ... _Types> constexpr std::variant_alternative_t<_Np, std::variant<_Types ...> >&& std::get(std::variant<_Types ...>&&)’
1655 | get(variant<_Types...>&& __v)
| ^~~
/usr/include/c++/10.2.0/variant:1655:5: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/variant:1706:22: note: types ‘std::variant<_Types ...>’ and ‘const std::vector<ObjectCalcer*>’ have incompatible cv-qualifiers
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/10.2.0/variant:1666:5: note: candidate: ‘template<long unsigned int _Np, class ... _Types> constexpr std::variant_alternative_t<_Np, std::variant<_Types ...> >& std::get(const std::variant<_Types ...>&)’
1666 | get(const variant<_Types...>& __v)
| ^~~
/usr/include/c++/10.2.0/variant:1666:5: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/variant:1706:22: note: ‘const std::vector<ObjectCalcer*>’ is not derived from ‘const std::variant<_Types ...>’
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/10.2.0/variant:1677:5: note: candidate: ‘template<long unsigned int _Np, class ... _Types> constexpr std::variant_alternative_t<_Np, std::variant<_Types ...> >&& std::get(const std::variant<_Types ...>&&)’
1677 | get(const variant<_Types...>&& __v)
| ^~~
/usr/include/c++/10.2.0/variant:1677:5: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/variant:1706:22: note: ‘const std::vector<ObjectCalcer*>’ is not derived from ‘const std::variant<_Types ...>’
1706 | decltype(std::get<0>(std::declval<_Variants>()))...>;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/10.2.0/variant:1071:20: note: candidate: ‘template<class _Tp, class ... _Types> constexpr _Tp& std::get(std::variant<_Types ...>&)’
1071 | constexpr _Tp& get(variant<_Types...>& __v)
| ^~~
/usr/include/c++/10.2.0/variant:1071:20: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/variant:1080:21: note: candidate: ‘template<class _Tp, class ... _Types> constexpr _Tp&& std::get(std::variant<_Types ...>&&)’
1080 | constexpr _Tp&& get(variant<_Types...>&& __v)
| ^~~
/usr/include/c++/10.2.0/variant:1080:21: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/variant:1090:26: note: candidate: ‘template<class _Tp, class ... _Types> constexpr const _Tp& std::get(const std::variant<_Types ...>&)’
1090 | constexpr const _Tp& get(const variant<_Types...>& __v)
| ^~~
/usr/include/c++/10.2.0/variant:1090:26: note: template argument deduction/substitution failed:
/usr/include/c++/10.2.0/variant:1099:27: note: candidate: ‘template<class _Tp, class ... _Types> constexpr const _Tp&& std::get(const std::variant<_Types ...>&&)’
1099 | constexpr const _Tp&& get(const variant<_Types...>&& __v)
|