/in/Compile/BinarySearchTree_compile_check.cpp: In function 'int main()':
/in/Compile/BinarySearchTree_compile_check.cpp:86:14: error: 'const class BinarySearchTree<int>' has no member named 'traverse_preorder'; did you mean 'traverse_inorder'?
   const_tree.traverse_preorder(cout);
              ^~~~~~~~~~~~~~~~~
              traverse_inorder
/in/Compile/BinarySearchTree_compile_check.cpp:87:19: error: 'const class BinarySearchTree<Duck, DuckWealthLess>' has no member named 'traverse_preorder'; did you mean 'traverse_inorder'?
   const_duck_tree.traverse_preorder(cout);
                   ^~~~~~~~~~~~~~~~~
                   traverse_inorder
/in/Compile/BinarySearchTree_compile_check.cpp:116:21: error: no match for 'operator=' (operand types are 'BinarySearchTree<int>::Iterator' and 'void')
   it = tree.insert(0);
                     ^
In file included from /in/Compile/BinarySearchTree_compile_check.cpp:4:0:
/in/BinarySearchTree.h:173:11: note: candidate: BinarySearchTree<int>::Iterator& BinarySearchTree<int>::Iterator::operator=(const BinarySearchTree<int>::Iterator&)
     class Iterator {
           ^~~~~~~~
/in/BinarySearchTree.h:173:11: note:   no known conversion for argument 1 from 'void' to 'const BinarySearchTree<int>::Iterator&'
/in/BinarySearchTree.h:173:11: note: candidate: BinarySearchTree<int>::Iterator& BinarySearchTree<int>::Iterator::operator=(BinarySearchTree<int>::Iterator&&)
/in/BinarySearchTree.h:173:11: note:   no known conversion for argument 1 from 'void' to 'BinarySearchTree<int>::Iterator&&'
/in/Compile/BinarySearchTree_compile_check.cpp:117:36: error: no match for 'operator=' (operand types are 'BinarySearchTree<Duck, DuckWealthLess>::Iterator' and 'void')
   duck_it = duck_tree.insert(Duck());
                                    ^
In file included from /in/Compile/BinarySearchTree_compile_check.cpp:4:0:
/in/BinarySearchTree.h:173:11: note: candidate: BinarySearchTree<Duck, DuckWealthLess>::Iterator& BinarySearchTree<Duck, DuckWealthLess>::Iterator::operator=(const BinarySearchTree<Duck, DuckWealthLess>::Iterator&)
     class Iterator {
           ^~~~~~~~
/in/BinarySearchTree.h:173:11: note:   no known conversion for argument 1 from 'void' to 'const BinarySearchTree<Duck, DuckWealthLess>::Iterator&'
/in/BinarySearchTree.h:173:11: note: candidate: BinarySearchTree<Duck, DuckWealthLess>::Iterator& BinarySearchTree<Duck, DuckWealthLess>::Iterator::operator=(BinarySearchTree<Duck, DuckWealthLess>::Iterator&&)
/in/BinarySearchTree.h:173:11: note:   no known conversion for argument 1 from 'void' to 'BinarySearchTree<Duck, DuckWealthLess>::Iterator&&'
/in/Compile/BinarySearchTree_compile_check.cpp:126:9: error: assignment of read-only location 'it.BinarySearchTree<int>::Iterator::operator*()'
   *it = 50;
         ^~
/in/Compile/BinarySearchTree_compile_check.cpp:127:21: error: passing 'const Duck' as 'this' argument discards qualifiers [-fpermissive]
   *duck_it = Duck(50);
                     ^
/in/Compile/BinarySearchTree_compile_check.cpp:8:7: note:   in call to 'constexpr Duck& Duck::operator=(Duck&&)'
 class Duck {
       ^~~~
/in/Compile/Makefile:30: recipe for target 'BinarySearchTree_compile_check.exe' failed
make: *** [BinarySearchTree_compile_check.exe] Error 1