运行结果
实验三/003.
cpp: In function ‘int main()’:
实验三/003.
cpp:64:42: error: no matching function for call to ‘std::queue<std::tuple<int, int, int, int> >::push(<brace-enclosed initializer list>)’
q.push({sy, sx, startColor, startDir});
^
In file included from /usr/local/include/
c++/7.3.0/queue:64:0,
from 实验三/003.
cpp:2:
/usr/local/include/
c++/7.3.0/bits/stl_queue.h:251:7: note: candidate: void std::queue<_Tp, _Sequence>::push(const value_type&) [with _Tp = std::tuple<int, int, int, int>; _Sequence = std::
deque<std::tuple<int, int, int, int>, std::allocator<std::tuple<int, int, int, int> > >; std::queue<_Tp, _Sequence>::value_type = std::tuple<int, int, int, int>]
push(const value_type& __x)
^~~~
/usr/local/include/
c++/7.3.0/bits/stl_queue.h:251:7: note: no known conversion for argument 1 from ‘<brace-enclosed initializer list>’ to ‘const value_type& {aka const std::tuple<int, int, int, int>&}’
/usr/local/include/
c++/7.3.0/bits/stl_queue.h:256:7: note: candidate: void std::queue<_Tp, _Sequence>::push(std::queue<_Tp, _Sequence>::value_type&&) [with _Tp = std::tuple<int, int, int, int>; _Sequence = std::
deque<std::tuple<int, int, int, int>, std::allocator<std::tuple<int, int, int, int> > >; std::queue<_Tp, _Sequence>::value_type = std::tuple<int, int, int, int>]
push(value_type&& __x)
^~~~
/usr/local/include/
c++/7.3.0/bits/stl_queue.h:256:7: note: no known conversion for argument 1 from ‘<brace-enclosed initializer list>’ to ‘std::queue<std::tuple<int, int, int, int> >::value_type&& {aka std::tuple<int, int, int, int>&&}’
实验三/003.
cpp:68:14: warning: decomposition declaration only available with -std=
c++1z or -std=gnu++1z
auto [y, x, color, dir] = q.front();
^
实验三/003.
cpp:68:14: error: ‘std::tuple<int, int, int, int> <anonymous>’ has incomplete type
auto [y, x, color, dir] = q.front();
^~~~~~~~~~~~~~~~~~
实验三/003.
cpp:82:41: error: no matching function for call to ‘std::queue<std::tuple<int, int, int, int> >::push(<brace-enclosed initializer list>)’
q.push({y, x, color, newDir});
^
In file included from /usr/local/include/
c++/7.3.0/queue:64:0,
from 实验三/003.
cpp:2:
/usr/local/include/
c++/7.3.0/bits/stl_queue.h:251:7: note: candidate: void std::queue<_Tp, _Sequence>::push(const value_type&) [with _Tp = std::tuple<int, int, int, int>; _Sequence = std::
deque<std::tuple<int, int, int, int>, std::allocator<std::tuple<int, int, int, int> > >; std::queue<_Tp, _Sequence>::value_type = std::tuple<int, int, int, int>]
push(const value_type& __x)
^~~~
/usr/local/include/
c++/7.3.0/bits/stl_queue.h:251:7: note: no known conversion for argument 1 from ‘<brace-enclosed initializer list>’ to ‘const value_type& {aka const std::tuple<int, int, int, int>&}’
/usr/local/include/
c++/7.3.0/bits/stl_queue.h:256:7: note: candidate: void std::queue<_Tp, _Sequence>::push(std::queue<_Tp, _Sequence>::value_type&&) [with _Tp = std::tuple<int, int, int, int>; _Sequence = std::
deque<std::tuple<int, int, int, int>, std::allocator<std::tuple<int, int, int, int> > >; std::queue<_Tp, _Sequence>::value_type = std::tuple<int, int, int, int>]
push(value_type&& __x)
^~~~
/usr/local/include/
c++/7.3.0/bits/stl_queue.h:256:7: note: no known conversion for argument 1 from ‘<brace-enclosed initializer list>’ to ‘std::queue<std::tuple<int, int, int, int> >::value_type&& {aka std::tuple<int, int, int, int>&&}’
实验三/003.
cpp:89:41: error: no matching function for call to ‘std::queue<std::tuple<int, int, int, int> >::push(<brace-enclosed initializer list>)’
q.push({y, x, color, newDir});
^
In file included from /usr/local/include/
c++/7.3.0/queue:64:0,
from 实验三/003.
cpp:2:
/usr/local/include/
c++/7.3.0/bits/stl_queue.h:251:7: note: candidate: void std::queue<_Tp, _Sequence>::push(const value_type&) [with _Tp = std::tuple<int, int, int, int>; _Sequence = std::
deque<std::tuple<int, int, int, int>, std::allocator<std::tuple<int, int, int, int> > >; std::queue<_Tp, _Sequence>::value_type = std::tuple<int, int, int, int>]
push(const value_type& __x)
^~~~
/usr/local/include/
c++/7.3.0/bits/stl_queue.h:251:7: note: no known conversion for argument 1 from ‘<brace-enclosed initializer list>’ to ‘const value_type& {aka const std::tuple<int, int, int, int>&}’
/usr/local/include/
c++/7.3.0/bits/stl_queue.h:256:7: note: candidate: void std::queue<_Tp, _Sequence>::push(std::queue<_Tp, _Sequence>::value_type&&) [with _Tp = std::tuple<int, int, int, int>; _Sequence = std::
deque<std::tuple<int, int, int, int>, std::allocator<std::tuple<int, int, int, int> > >; std::queue<_Tp, _Sequence>::value_type = std::tuple<int, int, int, int>]
push(value_type&& __x)
^~~~
/usr/local/include/
c++/7.3.0/bits/stl_queue.h:256:7: note: no known conversion for argument 1 from ‘<brace-enclosed initializer list>’ to ‘std::queue<std::tuple<int, int, int, int> >::value_type&& {aka std::tuple<int, int, int, int>&&}’
实验三/003.
cpp:99:47: error: no matching function for call to ‘std::queue<std::tuple<int, int, int, int> >::push(<brace-enclosed initializer list>)’
q.push({ny, nx, newColor, dir});
^
In file included from /usr/local/include/
c++/7.3.0/queue:64:0,
from 实验三/003.
cpp:2:
/usr/local/include/
c++/7.3.0/bits/stl_queue.h:251:7: note: candidate: void std::queue<_Tp, _Sequence>::push(const value_type&) [with _Tp = std::tuple<int, int, int, int>; _Sequence = std::
deque<std::tuple<int, int, int, int>, std::allocator<std::tuple<int, int, int, int> > >; std::queue<_Tp, _Sequence>::value_type = std::tuple<int, int, int, int>]
push(const value_type& __x)
^~~~
/usr/local/include/
c++/7.3.0/bits/stl_queue.h:251:7: note: no known conversion for argument 1 from ‘<brace-enclosed initializer list>’ to ‘const value_type& {aka const std::tuple<int, int, int, int>&}’
/usr/local/include/
c++/7.3.0/bits/stl_queue.h:256:7: note: candidate: void std::queue<_Tp, _Sequence>::push(std::queue<_Tp, _Sequence>::value_type&&) [with _Tp = std::tuple<int, int, int, int>; _Sequence = std::
deque<std::tuple<int, int, int, int>, std::allocator<std::tuple<int, int, int, int> > >; std::queue<_Tp, _Sequence>::value_type = std::tuple<int, int, int, int>]
push(value_type&& __x)
^~~~
/usr/local/include/
c++/7.3.0/bits/stl_queue.h:256:7: note: no known conversion for argument 1 from ‘<brace-enclosed initializer list>’ to ‘std::queue<std::tuple<int, int, int, int> >::value_type&& {aka std::tuple<int, int, int, int>&&}’
In file included from /usr/local/include/
c++/7.3.0/
deque:64:0,
from /usr/local/include/
c++/7.3.0/queue:60,
from 实验三/003.
cpp:2:
/usr/local/include/
c++/7.3.0/bits/stl_
deque.h: In instantiation of ‘void std::
deque<_Tp, _Alloc>::_M_destroy_data(std::
deque<_Tp, _Alloc>::
iterator, std::
deque<_Tp, _Alloc>::
iterator, const std::allocator<_CharT>&) [with _Tp = std::tuple<int, int, int, int>; _Alloc = std::allocator<std::tuple<int, int, int, int> >; std::
deque<_Tp, _Alloc>::
iterator = std::_
Deque_
iterator<std::tuple<int, int, int, int>, std::tuple<int, int, int, int>&, std::tuple<int, int, int, int>*>]’:
/usr/local/include/
c++/7.3.0/bits/stl_
deque.h:1045:24: required from ‘std::
deque<_Tp, _Alloc>::~
deque() [with _Tp = std::tuple<int, int, int, int>; _Alloc = std::allocator<std::tuple<int, int, int, int> >]’
/usr/local/include/
c++/7.3.0/bits/stl_queue.h:96:11: required from here
/usr/local/include/
c++/7.3.0/bits/stl_
deque.h:
2071:6: error: invalid use of incomplete type ‘std::
deque<std::tuple<int, int, int, int>, std::allocator<std::tuple<int, int, int, int> > >::value_type {aka class std::tuple<int, int, int, int>}’
if (!__has_trivial_destructor(value_type))
In file included from /usr/local/include/
c++/7.3.0/bits/
move.h:54:0,
from /usr/local/include/
c++/7.3.0/bits/nested_exception.h:40,
from /usr/local/include/
c++/7.3.0/exception:143,
from /usr/local/include/
c++/7.3.0/ios:39,
from /usr/local/include/
c++/7.3.0/ostream:38,
from /usr/local/include/
c++/7.3.0/iostream:39,
from 实验三/003.
cpp:1:
/usr/local/include/
c++/7.3.0/type_traits:2555:11: note: declaration of ‘std::
deque<std::tuple<int, int, int, int>, std::allocator<std::tuple<int, int, int, int> > >::value_type {aka class std::tuple<int, int, int, int>}’
class tuple;
^~~~~
In file included from /usr/local/include/
c++/7.3.0/
deque:64:0,
from /usr/local/include/
c++/7.3.0/queue:60,
from 实验三/003.
cpp:2:
/usr/local/include/
c++/7.3.0/bits/stl_
deque.h: In instantiation of ‘void std::
deque<_Tp, _Alloc>::pop_front() [with _Tp = std::tuple<int, int, int, int>; _Alloc = std::allocator<std::tuple<int, int, int, int> >]’:
/usr/local/include/
c++/7.3.0/bits/stl_queue.h:287:2: required from ‘void std::queue<_Tp, _Sequence>::pop() [with _Tp = std::tuple<int, int, int, int>; _Sequence = std::
deque<std::tuple<int, int, int, int>, std::allocator<std::tuple<int, int, int, int> > >]’
实验三/003.
cpp:69:15: required from here
/usr/local/include/
c++/7.3.0/bits/stl_
deque.h:1582:40: error: invalid use of incomplete type ‘class std::tuple<int, int, int, int>’
!= this->_M_impl._M_start._M_last - 1)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
In file included from /usr/local/include/
c++/7.3.0/bits/
move.h:54:0,
from /usr/local/include/
c++/7.3.0/bits/nested_exception.h:40,
from /usr/local/include/
c++/7.3.0/exception:143,
from /usr/local/include/
c++/7.3.0/ios:39,
from /usr/local/include/
c++/7.3.0/ostream:38,
from /usr/local/include/
c++/7.3.0/iostream:39,
from 实验三/003.
cpp:1:
/usr/local/include/
c++/7.3.0/type_traits:2555:11: note: declaration of ‘class std::tuple<int, int, int, int>’
class tuple;
^~~~~
In file included from /usr/local/include/
c++/7.3.0/
deque:64:0,
from /usr/local/include/
c++/7.3.0/queue:60,
from 实验三/003.
cpp:2:
/usr/local/include/
c++/7.3.0/bits/stl_
deque.h:1586:6: error: cannot increment a pointer to incomplete type ‘std::tuple<int, int, int, int>’
++this->_M_impl._M_start._M_cur;
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/include/
c++/7.3.0/bits/stl_
deque.h: In instantiation of ‘void std::_
Deque_base<_Tp, _Alloc>::_M_initialize_map(std::size_t) [with _Tp = std::tuple<int, int, int, int>; _Alloc = std::allocator<std::tuple<int, int, int, int> >; std::size_t = long unsigned int]’:
/usr/local/include/
c++/7.3.0/bits/stl_
deque.h:492:26: required from ‘std::_
Deque_base<_Tp, _Alloc>::_
Deque_base() [with _Tp = std::tuple<int, int, int, int>; _Alloc = std::allocator<std::tuple<int, int, int, int> >]’
/usr/local/include/
c++/7.3.0/bits/stl_
deque.h:888:23: required from ‘std::
deque<_Tp, _Alloc>::
deque() [with _Tp = std::tuple<int, int, int, int>; _Alloc = std::allocator<std::tuple<int, int, int, int> >]’
/usr/local/include/
c++/7.3.0/bits/stl_queue.h:153:6: required from ‘std::queue<_Tp, _Sequence>::queue() [with _Seq = std::
deque<std::tuple<int, int, int, int>, std::allocator<std::tuple<int, int, int, int> > >; _Requires = void; _Tp = std::tuple<int, int, int, int>; _Sequence = std::
deque<std::tuple<int, int, int, int>, std::allocator<std::tuple<int, int, int, int> > >]’
实验三/003.
cpp:60:38: required from here
/usr/local/include/
c++/7.3.0/bits/stl_
deque.h:684:74: error: invalid application of ‘sizeof’ to incomplete type ‘std::tuple<int, int, int, int>’
const size_t __num_nodes = (__num_elements/ __
deque_buf_size(sizeof(_Tp))
^
/usr/local/include/
c++/7.3.0/bits/stl_
deque.h:715:31: error: invalid application of ‘sizeof’ to incomplete type ‘std::tuple<int, int, int, int>’
% __
deque_buf_size(sizeof(_Tp)));
^
/usr/local/include/
c++/7.3.0/bits/stl_
deque.h: In instantiation of ‘void std::_
Deque_base<_Tp, _Alloc>::_M_deallocate_node(std::_
Deque_base<_Tp, _Alloc>::_Ptr) [with _Tp = std::tuple<int, int, int, int>; _Alloc = std::allocator<std::tuple<int, int, int, int> >; std::_
Deque_base<_Tp, _Alloc>::_Ptr = std::tuple<int, int, int, int>*]’:
/usr/local/include/
c++/7.3.0/bits/stl_
deque.h:743:
20: required from ‘void std::_
Deque_base<_Tp, _Alloc>::_M_destroy_nodes(std::_
Deque_base<_Tp, _Alloc>::_Map_pointer, std::_
Deque_base<_Tp, _Alloc>::_Map_pointer) [with _Tp = std::tuple<int, int, int, int>; _Alloc = std::allocator<std::tuple<int, int, int, int> >; std::_
Deque_base<_Tp, _Alloc>::_Map_pointer = std::tuple<int, int, int, int>**]’
/usr/local/include/
c++/7.3.0/bits/stl_
deque.h:665:
20: required from ‘std::_
Deque_base<_Tp, _Alloc>::~_
Deque_base() [with _Tp = std::tuple<int, int, int, int>; _Alloc = std::allocator<std::tuple<int, int, int, int> >]’
/usr/local/include/
c++/7.3.0/bits/stl_
deque.h:1045:65: required from ‘std::
deque<_Tp, _Alloc>::~
deque() [with _Tp = std::tuple<int, int, int, int>; _Alloc = std::allocator<std::tuple<int, int, int, int> >]’
/usr/local/include/
c++/7.3.0/bits/stl_queue.h:96:11: required from here
/usr/local/include/
c++/7.3.0/bits/stl_
deque.h:609:59: error: invalid application of ‘sizeof’ to incomplete type ‘std::tuple<int, int, int, int>’
_Traits::deallocate(_M_impl, __p, __
deque_buf_size(sizeof(_Tp)));
本文深入探讨了C++标准库中的deque容器源码，特别关注了在VS2019环境下，如何使用cpp20新语法操作deque，以及move_iterator的实现和应用。通过对deque内部数据结构和操作函数的分析，阐述了其高效特性和使用技巧。
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