[flong3@linux-a1 mp_list]$ make
clang++ -Iinclude -std=c++14 -stdlib=libc++ -c -g -O1 -Wall -Wextra src/main.cpp
In file included from src/main.cpp:1:
In file included from include/dl_list.h:265:
include/dl_list.tcc:63:31: warning: unused parameter 'other'
      [-Wunused-parameter]
dl_list<T>::dl_list(dl_list&& other)
                              ^
include/dl_list.tcc:81:32: warning: unused parameter 'other'
      [-Wunused-parameter]
void dl_list<T>::swap(dl_list& other)
                               ^
include/dl_list.tcc:87:30: warning: unused parameter 'data' [-Wunused-parameter]
void dl_list<T>::push_back(T data)
                             ^
include/dl_list.tcc:119:49: warning: unused parameter 'first'
      [-Wunused-parameter]
void dl_list<T>::reverse(std::unique_ptr<node>& first, node*& last)
                                                ^
include/dl_list.tcc:119:63: warning: unused parameter 'last'
      [-Wunused-parameter]
void dl_list<T>::reverse(std::unique_ptr<node>& first, node*& last)
                                                              ^
include/dl_list.tcc:152:39: warning: unused parameter 'n' [-Wunused-parameter]
void dl_list<T>::reverse_nth(unsigned n)
                                      ^
include/dl_list.tcc:208:30: warning: unused parameter 'start'
      [-Wunused-parameter]
auto dl_list<T>::split(node* start, unsigned split_point)
                             ^
include/dl_list.tcc:229:46: warning: unused parameter 'first'
      [-Wunused-parameter]
auto dl_list<T>::merge(std::unique_ptr<node> first,
                                             ^
include/dl_list.tcc:230:46: warning: unused parameter 'second'
      [-Wunused-parameter]
                       std::unique_ptr<node> second) -> std::unique_ptr<node>
                                             ^
include/dl_list.tcc:247:50: warning: unused parameter 'start'
      [-Wunused-parameter]
auto dl_list<T>::mergesort(std::unique_ptr<node> start, uint64_t length)
                                                 ^
include/dl_list.tcc:247:66: warning: unused parameter 'length'
      [-Wunused-parameter]
auto dl_list<T>::mergesort(std::unique_ptr<node> start, uint64_t length)
                                                                 ^
include/dl_list.tcc:98:13: error: object of type
      'std::__1::unique_ptr<cs225::dl_list<epng::rgba_pixel>::node,
      std::__1::default_delete<cs225::dl_list<epng::rgba_pixel>::node> >' cannot
      be assigned because its copy assignment operator is implicitly deleted
    a->next = head_;
            ^
src/main.cpp:20:22: note: in instantiation of member function
      'cs225::dl_list<epng::rgba_pixel>::push_front' requested here
                list.push_front(*img(i, j));
                     ^
/class/cs225/lm35/bin/../include/c++/v1/memory:2515:31: note: copy assignment
      operator is implicitly deleted because
      'unique_ptr<cs225::dl_list<epng::rgba_pixel>::node,
      std::__1::default_delete<cs225::dl_list<epng::rgba_pixel>::node> >' has a
      user-declared move constructor
    _LIBCPP_INLINE_VISIBILITY unique_ptr(unique_ptr&& __u) _NOEXCEPT
                              ^
In file included from src/main.cpp:1:
In file included from include/dl_list.h:265:
include/dl_list.tcc:99:10: error: no viable overloaded '='
    head_=a;
    ~~~~~^~
/class/cs225/lm35/bin/../include/c++/v1/memory:2459:29: note: candidate function
      (the implicit copy assignment operator) not viable: no known conversion
      from 'cs225::dl_list<epng::rgba_pixel>::node *' to 'const
      std::__1::unique_ptr<cs225::dl_list<epng::rgba_pixel>::node,
      std::__1::default_delete<cs225::dl_list<epng::rgba_pixel>::node> >' for
      1st argument
class _LIBCPP_TYPE_VIS_ONLY unique_ptr
                            ^
/class/cs225/lm35/bin/../include/c++/v1/memory:2544:47: note: candidate function
      not viable: no known conversion from
      'cs225::dl_list<epng::rgba_pixel>::node *' to
      'std::__1::unique_ptr<cs225::dl_list<epng::rgba_pixel>::node,
      std::__1::default_delete<cs225::dl_list<epng::rgba_pixel>::node> >' for
      1st argument
        _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(unique_ptr&& __u...
                                              ^
/class/cs225/lm35/bin/../include/c++/v1/memory:2600:43: note: candidate function
      not viable: no known conversion from
      'cs225::dl_list<epng::rgba_pixel>::node *' to 'nullptr_t' for 1st argument
    _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(nullptr_t) _NOEXCEPT
                                          ^
/class/cs225/lm35/bin/../include/c++/v1/memory:2560:13: note: candidate template
      ignored: could not match 'unique_ptr<type-parameter-0-0,
      type-parameter-0-1>' against 'cs225::dl_list<epng::rgba_pixel>::node *'
            operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT
            ^
In file included from src/main.cpp:1:
In file included from include/dl_list.h:265:
include/dl_list.tcc:98:13: error: object of type
      'std::__1::unique_ptr<cs225::dl_list<int>::node,
      std::__1::default_delete<cs225::dl_list<int>::node> >' cannot be assigned
      because its copy assignment operator is implicitly deleted
    a->next = head_;
            ^
src/main.cpp:65:13: note: in instantiation of member function
      'cs225::dl_list<int>::push_front' requested here
        lst.push_front(i);
            ^
/class/cs225/lm35/bin/../include/c++/v1/memory:2515:31: note: copy assignment
      operator is implicitly deleted because
      'unique_ptr<cs225::dl_list<int>::node,
      std::__1::default_delete<cs225::dl_list<int>::node> >' has a user-declared
      move constructor
    _LIBCPP_INLINE_VISIBILITY unique_ptr(unique_ptr&& __u) _NOEXCEPT
                              ^
In file included from src/main.cpp:1:
In file included from include/dl_list.h:265:
include/dl_list.tcc:99:10: error: no viable overloaded '='
    head_=a;
    ~~~~~^~
/class/cs225/lm35/bin/../include/c++/v1/memory:2459:29: note: candidate function
      (the implicit copy assignment operator) not viable: no known conversion
      from 'cs225::dl_list<int>::node *' to 'const
      std::__1::unique_ptr<cs225::dl_list<int>::node,
      std::__1::default_delete<cs225::dl_list<int>::node> >' for 1st argument
class _LIBCPP_TYPE_VIS_ONLY unique_ptr
                            ^
/class/cs225/lm35/bin/../include/c++/v1/memory:2544:47: note: candidate function
      not viable: no known conversion from 'cs225::dl_list<int>::node *' to
      'std::__1::unique_ptr<cs225::dl_list<int>::node,
      std::__1::default_delete<cs225::dl_list<int>::node> >' for 1st argument
        _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(unique_ptr&& __u...
                                              ^
/class/cs225/lm35/bin/../include/c++/v1/memory:2600:43: note: candidate function
      not viable: no known conversion from 'cs225::dl_list<int>::node *' to
      'nullptr_t' for 1st argument
    _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(nullptr_t) _NOEXCEPT
                                          ^
/class/cs225/lm35/bin/../include/c++/v1/memory:2560:13: note: candidate template
      ignored: could not match 'unique_ptr<type-parameter-0-0,
      type-parameter-0-1>' against 'cs225::dl_list<int>::node *'
            operator=(unique_ptr<_Up, _Ep>&& __u) _NOEXCEPT
            ^
In file included from src/main.cpp:1:
In file included from include/dl_list.h:265:
include/dl_list.tcc:72:14: error: invalid operands to binary expression
      ('cs225::dl_list<epng::rgba_pixel> *' and
      'cs225::dl_list<epng::rgba_pixel>')
    if (this !=  rhs){
        ~~~~ ^   ~~~
src/main.cpp:112:9: note: in instantiation of member function
      'cs225::dl_list<epng::rgba_pixel>::operator=' requested here
    lst = list_from_image(in);
        ^
include/rgba_pixel.h:81:6: note: candidate function not viable: no known
      conversion from 'cs225::dl_list<epng::rgba_pixel> *' to
      'const epng::rgba_pixel' for 1st argument
bool operator!=(const epng::rgba_pixel& lhs, const epng::rgba_pixel& rhs);
     ^
11 warnings and 5 errors generated.
make: *** [main.o] Error 1
[flong3@linux-a1 mp_list]$