diff --git a/notebooks/09_Inheritance.ipynb b/notebooks/09_Inheritance.ipynb
index 43762fe92ea4e8d84b0e63da6b8f0f3aee8e25dc..5a5656ca7b50a3b368aa571a2559f57ac46f7e09 100644
--- a/notebooks/09_Inheritance.ipynb
+++ b/notebooks/09_Inheritance.ipynb
@@ -83,10 +83,214 @@
},
{
"cell_type": "code",
- "execution_count": 8,
+ "execution_count": 5,
"id": "686fb768",
"metadata": {},
- "outputs": [],
+ "outputs": [
+ {
+ "name": "stderr",
+ "output_type": "stream",
+ "text": [
+ "\u001b[1minput_line_11:5:49: \u001b[0m\u001b[0;1;31merror: \u001b[0m\u001b[1mno viable overloaded '='\u001b[0m\n",
+ " void set_name( const std::string& n ) { name_ = n; }\n",
+ "\u001b[0;1;32m ~~~~~ ^ ~\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/bits/basic_string.h:688:7: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function not viable: no known conversion from 'const std::string' (aka 'const basic_string<char>') to 'const char *' for 1st argument\u001b[0m\n",
+ " operator=(const _CharT* __s)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/bits/basic_string.h:699:7: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function not viable: no known conversion from 'const std::string' (aka 'const basic_string<char>') to 'char' for 1st argument\u001b[0m\n",
+ " operator=(_CharT __c)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/bits/basic_string.h:716:7: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function not viable: 1st argument ('const std::string' (aka 'const basic_string<char>')) would lose const qualifier\u001b[0m\n",
+ " operator=(basic_string&& __str)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/bits/basic_string.h:779:7: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function not viable: no known conversion from 'const std::string' (aka 'const basic_string<char>') to 'initializer_list<char>' for 1st argument\u001b[0m\n",
+ " operator=(initializer_list<_CharT> __l)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1minput_line_11:8:55: \u001b[0m\u001b[0;1;31merror: \u001b[0m\u001b[1mreference to overloaded function could not be resolved; did you mean to call it?\u001b[0m\n",
+ " std::cout << \"[person] My name is \" << name_ << std::endl;\n",
+ "\u001b[0;1;32m ^~~~~~~~~\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:681:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mpossible target for call\u001b[0m\n",
+ " endl(basic_ostream<_CharT, _Traits>& __os)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:245:7: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function not viable: no overload of 'endl' matching 'const void *' for 1st argument\u001b[0m\n",
+ " operator<<(const void* __p)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/system_error:262:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function template not viable: no overload of 'endl' matching 'const std::error_code' for 2nd argument\u001b[0m\n",
+ " operator<<(basic_ostream<_CharT, _Traits>& __os, const error_code& __e)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:117:7: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function not viable: no overload of 'endl' matching 'std::basic_ostream<char, std::char_traits<char> >::__ios_type &(*)(std::basic_ostream<char, std::char_traits<char> >::__ios_type &)' (aka 'basic_ios<char, std::char_traits<char> > &(*)(basic_ios<char, std::char_traits<char> > &)') for 1st argument\u001b[0m\n",
+ " operator<<(__ios_type& (*__pf)(__ios_type&))\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:127:7: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function not viable: no overload of 'endl' matching 'std::ios_base &(*)(std::ios_base &)' for 1st argument\u001b[0m\n",
+ " operator<<(ios_base& (*__pf) (ios_base&))\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:166:7: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function not viable: no overload of 'endl' matching 'long' for 1st argument\u001b[0m\n",
+ " operator<<(long __n)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:170:7: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function not viable: no overload of 'endl' matching 'unsigned long' for 1st argument\u001b[0m\n",
+ " operator<<(unsigned long __n)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:174:7: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function not viable: no overload of 'endl' matching 'bool' for 1st argument\u001b[0m\n",
+ " operator<<(bool __n)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:178:7: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function not viable: no overload of 'endl' matching 'short' for 1st argument\u001b[0m\n",
+ " operator<<(short __n);\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:181:7: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function not viable: no overload of 'endl' matching 'unsigned short' for 1st argument\u001b[0m\n",
+ " operator<<(unsigned short __n)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:189:7: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function not viable: no overload of 'endl' matching 'int' for 1st argument\u001b[0m\n",
+ " operator<<(int __n);\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:192:7: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function not viable: no overload of 'endl' matching 'unsigned int' for 1st argument\u001b[0m\n",
+ " operator<<(unsigned int __n)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:201:7: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function not viable: no overload of 'endl' matching 'long long' for 1st argument\u001b[0m\n",
+ " operator<<(long long __n)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:205:7: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function not viable: no overload of 'endl' matching 'unsigned long long' for 1st argument\u001b[0m\n",
+ " operator<<(unsigned long long __n)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:220:7: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function not viable: no overload of 'endl' matching 'double' for 1st argument\u001b[0m\n",
+ " operator<<(double __f)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:224:7: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function not viable: no overload of 'endl' matching 'float' for 1st argument\u001b[0m\n",
+ " operator<<(float __f)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:232:7: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function not viable: no overload of 'endl' matching 'long double' for 1st argument\u001b[0m\n",
+ " operator<<(long double __f)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:276:7: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function not viable: no overload of 'endl' matching 'std::basic_ostream<char, std::char_traits<char> >::__streambuf_type *' (aka 'basic_streambuf<char, std::char_traits<char> > *') for 1st argument\u001b[0m\n",
+ " operator<<(__streambuf_type* __sb);\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:506:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function [with _CharT = char, _Traits = std::char_traits<char>] not viable: no overload of 'endl' matching 'char' for 2nd argument\u001b[0m\n",
+ " operator<<(basic_ostream<_CharT, _Traits>& __out, _CharT __c)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:511:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function template not viable: no overload of 'endl' matching 'char' for 2nd argument\u001b[0m\n",
+ " operator<<(basic_ostream<_CharT, _Traits>& __out, char __c)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:517:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function template not viable: no overload of 'endl' matching 'char' for 2nd argument\u001b[0m\n",
+ " operator<<(basic_ostream<char, _Traits>& __out, char __c)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:523:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function template not viable: no overload of 'endl' matching 'signed char' for 2nd argument\u001b[0m\n",
+ " operator<<(basic_ostream<char, _Traits>& __out, signed char __c)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:528:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function template not viable: no overload of 'endl' matching 'unsigned char' for 2nd argument\u001b[0m\n",
+ " operator<<(basic_ostream<char, _Traits>& __out, unsigned char __c)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:589:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function [with _CharT = char, _Traits = std::char_traits<char>] not viable: no overload of 'endl' matching 'const char *' for 2nd argument\u001b[0m\n",
+ " operator<<(basic_ostream<_CharT, _Traits>& __out, const _CharT* __s)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:606:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function template not viable: no overload of 'endl' matching 'const char *' for 2nd argument\u001b[0m\n",
+ " operator<<(basic_ostream<char, _Traits>& __out, const char* __s)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:619:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function template not viable: no overload of 'endl' matching 'const signed char *' for 2nd argument\u001b[0m\n",
+ " operator<<(basic_ostream<char, _Traits>& __out, const signed char* __s)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:624:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function template not viable: no overload of 'endl' matching 'const unsigned char *' for 2nd argument\u001b[0m\n",
+ " operator<<(basic_ostream<char, _Traits>& __out, const unsigned char* __s)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/bits/ostream.tcc:321:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function template not viable: no overload of 'endl' matching 'const char *' for 2nd argument\u001b[0m\n",
+ " operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/iomanip:79:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function template not viable: no overload of 'endl' matching 'std::_Resetiosflags' for 2nd argument\u001b[0m\n",
+ " operator<<(basic_ostream<_CharT, _Traits>& __os, _Resetiosflags __f)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/iomanip:109:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function template not viable: no overload of 'endl' matching 'std::_Setiosflags' for 2nd argument\u001b[0m\n",
+ " operator<<(basic_ostream<_CharT, _Traits>& __os, _Setiosflags __f)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/iomanip:143:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function template not viable: no overload of 'endl' matching 'std::_Setbase' for 2nd argument\u001b[0m\n",
+ " operator<<(basic_ostream<_CharT, _Traits>& __os, _Setbase __f)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/iomanip:178:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function [with _CharT = char, _Traits = std::char_traits<char>] not viable: no overload of 'endl' matching '_Setfill<char>' for 2nd argument\u001b[0m\n",
+ " operator<<(basic_ostream<_CharT, _Traits>& __os, _Setfill<_CharT> __f)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/iomanip:208:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function template not viable: no overload of 'endl' matching 'std::_Setprecision' for 2nd argument\u001b[0m\n",
+ " operator<<(basic_ostream<_CharT, _Traits>& __os, _Setprecision __f)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/iomanip:238:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function template not viable: no overload of 'endl' matching 'std::_Setw' for 2nd argument\u001b[0m\n",
+ " operator<<(basic_ostream<_CharT, _Traits>& __os, _Setw __f)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/iomanip:363:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate function [with _CharT = char, _Traits = std::char_traits<char>] not viable: no overload of 'endl' matching '_Put_time<char>' for 2nd argument\u001b[0m\n",
+ " operator<<(basic_ostream<_CharT, _Traits>& __os, _Put_time<_CharT> __f)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/bits/basic_string.h:6480:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate template ignored: couldn't infer template argument '_Alloc'\u001b[0m\n",
+ " operator<<(basic_ostream<_CharT, _Traits>& __os,\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/bits/shared_ptr.h:69:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate template ignored: couldn't infer template argument '_Tp'\u001b[0m\n",
+ " operator<<(std::basic_ostream<_Ch, _Tr>& __os,\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/bits/valarray_after.h:413:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate template ignored: couldn't infer template argument '_Dom'\u001b[0m\n",
+ " _DEFINE_EXPR_BINARY_OPERATOR(<<, struct std::__shift_left)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/bits/valarray_after.h:370:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mexpanded from macro '_DEFINE_EXPR_BINARY_OPERATOR'\u001b[0m\n",
+ " operator _Op(const typename _Dom::value_type& __t, \\\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/bits/valarray_after.h:413:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate template ignored: couldn't infer template argument '_Dom'\u001b[0m\n",
+ "\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/bits/valarray_after.h:396:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mexpanded from macro '_DEFINE_EXPR_BINARY_OPERATOR'\u001b[0m\n",
+ " operator _Op(const valarray<typename _Dom::value_type>& __v, \\\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/valarray:1193:1: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate template ignored: couldn't infer template argument '_Tp'\u001b[0m\n",
+ "_DEFINE_BINARY_OPERATOR(<<, __shift_left)\n",
+ "\u001b[0;1;32m^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/valarray:1177:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mexpanded from macro '_DEFINE_BINARY_OPERATOR'\u001b[0m\n",
+ " operator _Op(const typename valarray<_Tp>::value_type& __t, \\\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:773:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate template ignored: couldn't infer template argument '_Tp'\u001b[0m\n",
+ " operator<<(_Ostream&& __os, const _Tp& __x)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/iomanip:311:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate template ignored: couldn't infer template argument '_MoneyT'\u001b[0m\n",
+ " operator<<(basic_ostream<_CharT, _Traits>& __os, _Put_money<_MoneyT> __f)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/bits/valarray_after.h:413:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate template ignored: could not match '_Expr' against 'basic_ostream'\u001b[0m\n",
+ " _DEFINE_EXPR_BINARY_OPERATOR(<<, struct std::__shift_left)\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/bits/valarray_after.h:344:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mexpanded from macro '_DEFINE_EXPR_BINARY_OPERATOR'\u001b[0m\n",
+ " operator _Op(const _Expr<_Dom1, typename _Dom1::value_type>& __v, \\\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/bits/valarray_after.h:413:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate template ignored: could not match '_Expr' against 'basic_ostream'\u001b[0m\n",
+ "\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/bits/valarray_after.h:357:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mexpanded from macro '_DEFINE_EXPR_BINARY_OPERATOR'\u001b[0m\n",
+ " operator _Op(const _Expr<_Dom, typename _Dom::value_type>& __v, \\\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/bits/valarray_after.h:413:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate template ignored: could not match '_Expr' against 'basic_ostream'\u001b[0m\n",
+ "\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/bits/valarray_after.h:383:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mexpanded from macro '_DEFINE_EXPR_BINARY_OPERATOR'\u001b[0m\n",
+ " operator _Op(const _Expr<_Dom,typename _Dom::value_type>& __e, \\\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/valarray:1193:1: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate template ignored: could not match 'valarray' against 'basic_ostream'\u001b[0m\n",
+ "_DEFINE_BINARY_OPERATOR(<<, __shift_left)\n",
+ "\u001b[0;1;32m^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/valarray:1155:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mexpanded from macro '_DEFINE_BINARY_OPERATOR'\u001b[0m\n",
+ " operator _Op(const valarray<_Tp>& __v, const valarray<_Tp>& __w) \\\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/valarray:1193:1: \u001b[0m\u001b[0;1;30mnote: \u001b[0mcandidate template ignored: could not match 'valarray' against 'basic_ostream'\u001b[0m\n",
+ "\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/valarray:1166:5: \u001b[0m\u001b[0;1;30mnote: \u001b[0mexpanded from macro '_DEFINE_BINARY_OPERATOR'\u001b[0m\n",
+ " operator _Op(const valarray<_Tp>& __v, \\\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0mIn file included from input_line_5:1:\n",
+ "In file included from /home/student/micromamba/envs/xeus/include/xeus/xinterpreter.hpp:17:\n",
+ "In file included from /home/student/micromamba/envs/xeus/include/xeus/xcomm.hpp:19:\n",
+ "In file included from /home/student/micromamba/envs/xeus/include/nlohmann/json.hpp:41:\n",
+ "In file included from /home/student/micromamba/envs/xeus/include/nlohmann/detail/input/binary_reader.hpp:25:\n",
+ "In file included from /home/student/micromamba/envs/xeus/include/nlohmann/detail/input/input_adapters.hpp:23:\n",
+ "In file included from /home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/istream:39:\n",
+ "\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:609:8: \u001b[0m\u001b[0;1;31merror: \u001b[0m\u001b[1mno member named 'setstate' in 'std::basic_ostream<char>'\u001b[0m\n",
+ " __out.setstate(ios_base::badbit);\n",
+ "\u001b[0;1;32m ~~~~~ ^\n",
+ "\u001b[0m\u001b[1minput_line_11:8:15: \u001b[0m\u001b[0;1;30mnote: \u001b[0min instantiation of function template specialization 'std::operator<<<std::char_traits<char> >' requested here\u001b[0m\n",
+ " std::cout << \"[person] My name is \" << name_ << std::endl;\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m"
+ ]
+ },
+ {
+ "ename": "Interpreter Error",
+ "evalue": "",
+ "output_type": "error",
+ "traceback": [
+ "Interpreter Error: "
+ ]
+ }
+ ],
"source": [
"class person {\n",
"\n",
@@ -120,10 +324,48 @@
},
{
"cell_type": "code",
- "execution_count": 9,
+ "execution_count": 6,
"id": "9c807fff",
"metadata": {},
- "outputs": [],
+ "outputs": [
+ {
+ "name": "stderr",
+ "output_type": "stream",
+ "text": [
+ "\u001b[1minput_line_12:1:24: \u001b[0m\u001b[0;1;31merror: \u001b[0m\u001b[1mexpected class name\u001b[0m\n",
+ "class student : public person {\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1minput_line_12:4:5: \u001b[0m\u001b[0;1;31merror: \u001b[0m\u001b[1mmember initializer 'person' does not name a non-static data member or base class\u001b[0m\n",
+ " person(name), program_(program) {}\n",
+ "\u001b[0;1;32m ^~~~~~~~~~~~\n",
+ "\u001b[0m\u001b[1minput_line_12:6:46: \u001b[0m\u001b[0;1;31merror: \u001b[0m\u001b[1muse of undeclared identifier 'get_name'\u001b[0m\n",
+ " std::cout << \"[student] My name is \" << get_name()\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0mIn file included from input_line_5:1:\n",
+ "In file included from /home/student/micromamba/envs/xeus/include/xeus/xinterpreter.hpp:17:\n",
+ "In file included from /home/student/micromamba/envs/xeus/include/xeus/xcomm.hpp:19:\n",
+ "In file included from /home/student/micromamba/envs/xeus/include/nlohmann/json.hpp:41:\n",
+ "In file included from /home/student/micromamba/envs/xeus/include/nlohmann/detail/input/binary_reader.hpp:25:\n",
+ "In file included from /home/student/micromamba/envs/xeus/include/nlohmann/detail/input/input_adapters.hpp:23:\n",
+ "In file included from /home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/istream:39:\n",
+ "\u001b[1m/home/student/micromamba/envs/xeus/bin/../lib/gcc/../../x86_64-conda-linux-gnu/include/c++/10.4.0/ostream:609:8: \u001b[0m\u001b[0;1;31merror: \u001b[0m\u001b[1mno member named 'setstate' in 'std::basic_ostream<char>'\u001b[0m\n",
+ " __out.setstate(ios_base::badbit);\n",
+ "\u001b[0;1;32m ~~~~~ ^\n",
+ "\u001b[0m\u001b[1minput_line_12:6:15: \u001b[0m\u001b[0;1;30mnote: \u001b[0min instantiation of function template specialization 'std::operator<<<std::char_traits<char> >' requested here\u001b[0m\n",
+ " std::cout << \"[student] My name is \" << get_name()\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m"
+ ]
+ },
+ {
+ "ename": "Interpreter Error",
+ "evalue": "",
+ "output_type": "error",
+ "traceback": [
+ "Interpreter Error: "
+ ]
+ }
+ ],
"source": [
"class student : public person {\n",
"\n",
@@ -171,10 +413,55 @@
},
{
"cell_type": "code",
- "execution_count": 10,
+ "execution_count": 7,
"id": "bd768c68",
"metadata": {},
- "outputs": [],
+ "outputs": [
+ {
+ "name": "stderr",
+ "output_type": "stream",
+ "text": [
+ "\u001b[1minput_line_13:2:3: \u001b[0m\u001b[0;1;31merror: \u001b[0m\u001b[1munknown type name 'person'\u001b[0m\n",
+ " person jane( \"Jane Doe\" );\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1minput_line_13:4:3: \u001b[0m\u001b[0;1;31merror: \u001b[0m\u001b[1munknown type name 'student'\u001b[0m\n",
+ " student joe( \"Joe Smith\", \"Geophysics\" );\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1minput_line_13:6:3: \u001b[0m\u001b[0;1;31merror: \u001b[0m\u001b[1munknown type name 'person'\u001b[0m\n",
+ " person pv(joe);\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1minput_line_13:7:3: \u001b[0m\u001b[0;1;31merror: \u001b[0m\u001b[1muse of undeclared identifier 'person'; did you mean 'perror'?\u001b[0m\n",
+ " person& pr(joe); // or pr = joe\n",
+ "\u001b[0;1;32m ^~~~~~\n",
+ "\u001b[0m\u001b[0;32m perror\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/x86_64-conda-linux-gnu/sysroot/usr/include/stdio.h:841:13: \u001b[0m\u001b[0;1;30mnote: \u001b[0m'perror' declared here\u001b[0m\n",
+ "extern void perror (__const char *__s);\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1minput_line_13:8:3: \u001b[0m\u001b[0;1;31merror: \u001b[0m\u001b[1muse of undeclared identifier 'person'; did you mean 'perror'?\u001b[0m\n",
+ " person* pp(&joe); // or pp = &joe\n",
+ "\u001b[0;1;32m ^~~~~~\n",
+ "\u001b[0m\u001b[0;32m perror\n",
+ "\u001b[0m\u001b[1m/home/student/micromamba/envs/xeus/x86_64-conda-linux-gnu/sysroot/usr/include/stdio.h:841:13: \u001b[0m\u001b[0;1;30mnote: \u001b[0m'perror' declared here\u001b[0m\n",
+ "extern void perror (__const char *__s);\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1minput_line_13:10:3: \u001b[0m\u001b[0;1;31merror: \u001b[0m\u001b[1muse of undeclared identifier 'pr'\u001b[0m\n",
+ " pr.all_info();\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m\u001b[1minput_line_13:11:3: \u001b[0m\u001b[0;1;31merror: \u001b[0m\u001b[1muse of undeclared identifier 'pp'\u001b[0m\n",
+ " pp->all_info();\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m"
+ ]
+ },
+ {
+ "ename": "Interpreter Error",
+ "evalue": "",
+ "output_type": "error",
+ "traceback": [
+ "Interpreter Error: "
+ ]
+ }
+ ],
"source": [
"int main() {\n",
"\n",
@@ -198,20 +485,26 @@
},
{
"cell_type": "code",
- "execution_count": 11,
+ "execution_count": 8,
"id": "780348e2",
"metadata": {},
"outputs": [
{
- "name": "stdout",
+ "name": "stderr",
"output_type": "stream",
"text": [
- "[person] My name is Jane Doe\n",
- "[student] My name is Joe Smith, I study Geophysics\n",
- "[person] My name is Joe Smith\n",
- "[person] My name is Joe Smith\n",
- "[person] My name is Joe Smith\n",
- "Joe Smith"
+ "\u001b[1minput_line_14:2:2: \u001b[0m\u001b[0;1;31merror: \u001b[0m\u001b[1muse of undeclared identifier 'main'\u001b[0m\n",
+ " main();\n",
+ "\u001b[0;1;32m ^\n",
+ "\u001b[0m"
+ ]
+ },
+ {
+ "ename": "Interpreter Error",
+ "evalue": "",
+ "output_type": "error",
+ "traceback": [
+ "Interpreter Error: "
]
}
],
@@ -253,7 +546,7 @@
},
{
"cell_type": "code",
- "execution_count": null,
+ "execution_count": 2,
"id": "fd4597ea",
"metadata": {},
"outputs": [],
@@ -262,32 +555,32 @@
"\n",
"public:\n",
" person() = default;\n",
- " person( const std::string& name ) : name(name) {};\n",
+ " person( const std::string& name ) : name_(name) {};\n",
"\n",
- " void set_name( const std::string& n ) { name = n; }\n",
- " std::string get_name() const { return name; }\n",
+ " void set_name( const std::string& n ) { name_ = n; }\n",
+ " const std::string& get_name() const { return name_; }\n",
"\n",
" void all_info() const {\n",
- " std::cout << \"[person] My name is \" << name << std::endl;\n",
+ " std::cout << \"[person] My name is \" << name_ << std::endl;\n",
" }\n",
"\n",
"protected:\n",
- " std::string name;\n",
+ " std::string name_;\n",
"};\n",
"\n",
"class student : public person {\n",
"\n",
"public:\n",
" student( const std::string& name, const std::string program ) :\n",
- " person(name), program(program) {}\n",
+ " person(name), program_(program) {}\n",
"\n",
" void all_info() const {\n",
- " std::cout << \"[student] My name is \" << name\n",
- " << \", I study \" << program << std::endl;\n",
+ " std::cout << \"[student] My name is \" << name_\n",
+ " << \", I study \" << program_ << std::endl;\n",
" }\n",
"\n",
"private:\n",
- " std::string program;\n",
+ " std::string program_;\n",
"};"
]
},
@@ -296,7 +589,7 @@
"id": "459b408f",
"metadata": {},
"source": [
- "Having changed `name` from `private` to `protected` in line 14, allows us to directly use it in line 25."
+ "Having changed `name_` from `private` to `protected` in line 14, allows us to directly use it in line 25."
]
},
{
@@ -329,17 +622,18 @@
"outputs": [],
"source": [
"#include <iostream>\n",
+ "\n",
"struct A {\n",
- " A( int iVal ) : value(iVal) {};\n",
- " int value;\n",
+ " A( int iVal ) : value_(iVal) {};\n",
+ " int value_;\n",
"};\n",
"\n",
"struct B : public A {\n",
- " B( int iVal, double dVal ) : A(iVal), value(dVal) {\n",
- " std::cout << \"A::value = \" << A::value << \"\\n\"\n",
- " << \"B::value = \" << value << std::endl;\n",
+ " B( int iVal, double dVal ) : A(iVal), value_(dVal) {\n",
+ " std::cout << \"A::value = \" << A::value_ << \"\\n\"\n",
+ " << \"B::value = \" << value_ << std::endl;\n",
" };\n",
- " double value;\n",
+ " double value_;\n",
"};"
]
},
@@ -421,7 +715,7 @@
"\n",
"public:\n",
" void func( int arg ) {\n",
- " std::cout << \"Child::func() was called with argument '\"\n",
+ " std::cout << \"AnotherChild::func() was called with argument '\"\n",
" << arg << \"'\" << std::endl;\n",
" }\n",
"\n",
@@ -469,21 +763,30 @@
"id": "1fbaa676",
"metadata": {},
"source": [
- "We can solve this be explicitely requesting inheritance of the constructor again with a `using` directive. Note that this will inherit all constructors, it cannot be done selectively."
+ "We can solve this by explicitely requesting inheritance of the constructor again with a `using` directive. Note that this will inherit all constructors, it cannot be done selectively."
]
},
{
"cell_type": "code",
- "execution_count": null,
+ "execution_count": 3,
"id": "481fc3f5",
"metadata": {},
- "outputs": [],
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Smartie Clever\n"
+ ]
+ }
+ ],
"source": [
"#include <iostream>\n",
"class researcher : public person {\n",
" using person::person;\n",
"};\n",
"researcher smart( \"Smartie Clever\" );\n",
+ "\n",
"std::cout << smart.get_name() << std::endl;"
]
},
@@ -497,19 +800,29 @@
},
{
"cell_type": "code",
- "execution_count": null,
+ "execution_count": 5,
"id": "ed941226",
"metadata": {},
- "outputs": [],
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Hello Smartie Clever\n"
+ ]
+ }
+ ],
"source": [
"class researcher : public person {\n",
+ "\n",
"public:\n",
" using person::person; \n",
" researcher( const std::string& n ) {\n",
- " name = n;\n",
- " std::cout << \"Hello \" << name << std::endl;\n",
+ " name_ = n;\n",
+ " std::cout << \"Hello \" << name_ << std::endl;\n",
" }\n",
"};\n",
+ "\n",
"researcher smart( \"Smartie Clever\");"
]
},
@@ -526,7 +839,7 @@
},
{
"cell_type": "code",
- "execution_count": null,
+ "execution_count": 6,
"id": "1493af7c",
"metadata": {},
"outputs": [],
@@ -552,30 +865,59 @@
},
{
"cell_type": "code",
- "execution_count": null,
+ "execution_count": 7,
"id": "7802babb",
"metadata": {},
- "outputs": [],
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "GrandParent's c'tor invoked\n",
+ "Parent's c'tor invoked\n"
+ ]
+ }
+ ],
"source": [
"Parent walton;"
]
},
{
"cell_type": "code",
- "execution_count": null,
+ "execution_count": 8,
"id": "57215968",
"metadata": {},
- "outputs": [],
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "GrandParent's c'tor invoked\n",
+ "Parent's c'tor invoked\n",
+ "Child's c'tor invoked\n"
+ ]
+ }
+ ],
"source": [
"auto jim_bob = new Child;"
]
},
{
"cell_type": "code",
- "execution_count": null,
+ "execution_count": 9,
"id": "be7a63fe",
"metadata": {},
- "outputs": [],
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Child's d'tor invoked\n",
+ "Parent's d'tor invoked\n",
+ "GrandParent's d'tor invoked\n"
+ ]
+ }
+ ],
"source": [
"delete jim_bob;"
]
diff --git a/notebooks/10_Polymorphic_Classes.ipynb b/notebooks/10_Polymorphic_Classes.ipynb
index 9b8d19be64c624c918d6800c6a6bafa41533444a..6d630264c31f2acfb8e78eea15f222263186c995 100644
--- a/notebooks/10_Polymorphic_Classes.ipynb
+++ b/notebooks/10_Polymorphic_Classes.ipynb
@@ -26,7 +26,7 @@
},
{
"cell_type": "code",
- "execution_count": 25,
+ "execution_count": 1,
"id": "7942848b",
"metadata": {},
"outputs": [],
@@ -36,20 +36,20 @@
"class person {\n",
"\n",
"public:\n",
- " person( const std::string& name ) : name(name) {};\n",
+ " person( const std::string& name ) : name_(name) {};\n",
"\n",
" void all_info() const {\n",
- " std::cout << \"[person] My name is \" << name << std::endl;\n",
+ " std::cout << \"[person] My name is \" << name_ << std::endl;\n",
" }\n",
"\n",
"protected:\n",
- " std::string name;\n",
+ " std::string name_;\n",
"};"
]
},
{
"cell_type": "code",
- "execution_count": 26,
+ "execution_count": 2,
"id": "f40024e2",
"metadata": {},
"outputs": [],
@@ -57,22 +57,22 @@
"class student : public person {\n",
"\n",
"public:\n",
- " student( const std::string& name, const std::string program ) :\n",
- " person(name), program(program) {}\n",
+ " student( const std::string& name, const std::string& program ) :\n",
+ " person(name), program_(program) {}\n",
"\n",
" void all_info() const {\n",
- " std::cout << \"[student] My name is \" << name\n",
- " << \", I study \" << program << std::endl;\n",
+ " std::cout << \"[student] My name is \" << name_\n",
+ " << \", I study \" << program_ << std::endl;\n",
" }\n",
"\n",
"private:\n",
- " std::string program;\n",
+ " std::string program_;\n",
"};"
]
},
{
"cell_type": "code",
- "execution_count": 27,
+ "execution_count": 3,
"id": "459a1ce0",
"metadata": {},
"outputs": [],
@@ -81,15 +81,15 @@
"\n",
"public:\n",
" researcher( const std::string& name, const std::string& field ) :\n",
- " person(name), field(field) {}\n",
+ " person(name), field_(field) {}\n",
"\n",
" void all_info() const {\n",
- " std::cout << \"[researcher] My name is \" << name\n",
- " << \", I work on problems in \" << field << std::endl;\n",
+ " std::cout << \"[researcher] My name is \" << name_\n",
+ " << \", I work on problems in \" << field_ << std::endl;\n",
" }\n",
"\n",
"private:\n",
- " std::string field;\n",
+ " std::string field_;\n",
"};"
]
},
@@ -103,7 +103,7 @@
},
{
"cell_type": "code",
- "execution_count": 28,
+ "execution_count": 4,
"id": "5ff4684f",
"metadata": {},
"outputs": [],
@@ -135,7 +135,7 @@
},
{
"cell_type": "code",
- "execution_count": 29,
+ "execution_count": 6,
"id": "aebeaf35",
"metadata": {},
"outputs": [
@@ -151,7 +151,7 @@
}
],
"source": [
- "for( auto memb: uniMembers ) memb->all_info();"
+ "for( const auto memb: uniMembers ) memb->all_info();"
]
},
{
@@ -164,7 +164,7 @@
},
{
"cell_type": "code",
- "execution_count": 30,
+ "execution_count": 7,
"id": "445c4d28",
"metadata": {},
"outputs": [
@@ -206,7 +206,7 @@
},
{
"cell_type": "code",
- "execution_count": 31,
+ "execution_count": 8,
"id": "4b596bd2",
"metadata": {},
"outputs": [],
@@ -259,7 +259,7 @@
},
{
"cell_type": "code",
- "execution_count": 32,
+ "execution_count": 9,
"id": "12bebbf9",
"metadata": {},
"outputs": [
@@ -321,7 +321,7 @@
},
{
"cell_type": "code",
- "execution_count": 33,
+ "execution_count": 10,
"id": "f371e175-cbc1-45e4-b8bb-06b8ebc92ef1",
"metadata": {},
"outputs": [
@@ -396,7 +396,7 @@
},
{
"cell_type": "code",
- "execution_count": 34,
+ "execution_count": 11,
"id": "99352379",
"metadata": {},
"outputs": [],
@@ -408,7 +408,7 @@
},
{
"cell_type": "code",
- "execution_count": 35,
+ "execution_count": 12,
"id": "454ccaaf",
"metadata": {},
"outputs": [
@@ -435,7 +435,7 @@
},
{
"cell_type": "code",
- "execution_count": 36,
+ "execution_count": 13,
"id": "bd457522",
"metadata": {},
"outputs": [],
@@ -458,7 +458,7 @@
},
{
"cell_type": "code",
- "execution_count": 37,
+ "execution_count": 14,
"id": "4a0a85ba",
"metadata": {},
"outputs": [
@@ -494,7 +494,7 @@
},
{
"cell_type": "code",
- "execution_count": 39,
+ "execution_count": 16,
"id": "3c824171",
"metadata": {},
"outputs": [
@@ -527,7 +527,7 @@
},
{
"cell_type": "code",
- "execution_count": 40,
+ "execution_count": 18,
"id": "29c729c5",
"metadata": {},
"outputs": [
@@ -544,7 +544,7 @@
"fail.cpp:14:10: warning: 'B::func3' hides overloaded virtual function [-Woverloaded-virtual]\n",
" void func3() { std::cout << \"B::func3 is executing\" << std::endl; }; \n",
" ^\n",
- "fail.cpp:7:18: note: hidden overloaded virtual function 'A::func3' declared here: different qualifiers (const vs none)\n",
+ "fail.cpp:7:18: note: hidden overloaded virtual function 'A::func3' declared here: different qualifiers ('const' vs unqualified)\n",
" virtual void func3() const { std::cout << \"A::func3 is executing\" << std::endl; }; \n",
" ^\n",
"2 warnings generated.\n"
@@ -566,7 +566,7 @@
},
{
"cell_type": "code",
- "execution_count": 41,
+ "execution_count": 1,
"id": "8ab90c4e-a3a3-4d26-8be1-6783e75d8bdb",
"metadata": {},
"outputs": [
@@ -599,7 +599,7 @@
},
{
"cell_type": "code",
- "execution_count": 42,
+ "execution_count": 3,
"id": "f4c9ca56-443e-477c-a1ee-869de3d44341",
"metadata": {},
"outputs": [
@@ -607,20 +607,24 @@
"name": "stdout",
"output_type": "stream",
"text": [
- "fail.cpp:12:10: error: ‘void B::func1()’ marked ‘override’, but does not override\n",
- " void func1() override { std::cout << \"B::func1 is executing\" << std::endl; };\n",
- " ^~~~~\n",
- "fail.cpp:13:18: error: ‘virtual void B::func2(int)’ marked ‘override’, but does not override\n",
- " virtual void func2( int a ) override { std::cout << \"func2 from B: a = \" << a << std::endl; };\n",
- " ^~~~~\n",
- "fail.cpp:14:10: error: ‘void B::func3()’ marked ‘override’, but does not override\n",
- " void func3() override { std::cout << \"B::func3 is executing\" << std::endl; };\n",
- " ^~~~~\n"
+ "fail.cpp:12:18: error: only virtual member functions can be marked 'override'\n",
+ " void func1() override { std::cout << \"B::func1 is executing\" << std::endl; };\n",
+ " ^~~~~~~~~\n",
+ "fail.cpp:13:18: error: 'func2' marked 'override' but does not override any member functions\n",
+ " virtual void func2( int a ) override { std::cout << \"func2 from B: a = \" << a << std::endl; };\n",
+ " ^\n",
+ "fail.cpp:14:18: error: non-virtual member function marked 'override' hides virtual member function\n",
+ " void func3() override { std::cout << \"B::func3 is executing\" << std::endl; }; \n",
+ " ^\n",
+ "fail.cpp:7:18: note: hidden overloaded virtual function 'A::func3' declared here: different qualifiers ('const' vs unqualified)\n",
+ " virtual void func3() const { std::cout << \"A::func3 is executing\" << std::endl; }; \n",
+ " ^\n",
+ "3 errors generated.\n"
]
}
],
"source": [
- "!g++ fail.cpp"
+ "!clang++ fail.cpp"
]
},
{
@@ -629,12 +633,12 @@
"metadata": {},
"source": [
"#### Speficier: final\n",
- "The `final` specifier allows is to express that this is the final implementation of a virtual method. Further child classes are then not allowed to override it anymore."
+ "The `final` specifier allows to express that this is the final implementation of a virtual method. Further child classes are then not allowed to override it anymore."
]
},
{
"cell_type": "code",
- "execution_count": 46,
+ "execution_count": 11,
"id": "6c7d3d27-6622-497c-a621-ec8a207ae1ae",
"metadata": {},
"outputs": [
@@ -653,17 +657,17 @@
"\n",
"class GrandMother {\n",
"public:\n",
- " virtual void doIt( int a ) = 0;\n",
+ " virtual void doIt( int a ){};\n",
" void func() {};\n",
"};\n",
"\n",
"class Mother : public GrandMother {\n",
"public:\n",
- " void doIt( int a ) override // final // (1) creates an error in Daughter\n",
+ " void doIt( int a ) override // final (1) creates an error in Daughter\n",
" {\n",
" std::cout << a << \" + 3 = \" << a+3 << std::endl;\n",
" }\n",
- " // void func() final {}; // (2) will fail as GrandMother::func is not virtual\n",
+ " void func(); // final {}; // (2) will fail as GrandMother::func is not virtual\n",
"};\n",
"\n",
"class Daughter : public Mother {\n",
@@ -686,7 +690,7 @@
},
{
"cell_type": "code",
- "execution_count": 47,
+ "execution_count": 12,
"id": "55d0dcc1-2f25-4b27-812c-46b1009c6881",
"metadata": {},
"outputs": [],
@@ -696,7 +700,7 @@
},
{
"cell_type": "code",
- "execution_count": 48,
+ "execution_count": 6,
"id": "ae0745fb-02d6-4a15-b59d-08720bdcb1cc",
"metadata": {},
"outputs": [
@@ -780,7 +784,7 @@
},
{
"cell_type": "code",
- "execution_count": 56,
+ "execution_count": 20,
"id": "24c9d364",
"metadata": {},
"outputs": [
@@ -821,17 +825,35 @@
"\n",
"int main( void ) {\n",
" // Interface uninstantiable;\n",
- " // VariantA obj1;\n",
+ " // Interface inter;\n",
+ " VariantA obj1;\n",
" VariantB obj2;\n",
"}"
]
},
{
"cell_type": "code",
- "execution_count": 57,
+ "execution_count": 21,
"id": "a6159a96-102e-478f-8e06-68e51e77e1d0",
"metadata": {},
- "outputs": [],
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "pure.cpp: In function ‘int main()’:\n",
+ "pure.cpp:29:12: error: cannot declare variable ‘obj1’ to be of abstract type ‘VariantA’\n",
+ " 29 | VariantA obj1;\n",
+ " | ^~~~\n",
+ "pure.cpp:11:7: note: because the following virtual functions are pure within ‘VariantA’:\n",
+ " 11 | class VariantA : public Interface {\n",
+ " | ^~~~~~~~\n",
+ "pure.cpp:7:18: note: ‘virtual double Interface::getValue()’\n",
+ " 7 | virtual double getValue() = 0;\n",
+ " | ^~~~~~~~\n"
+ ]
+ }
+ ],
"source": [
"!g++ pure.cpp"
]
@@ -839,7 +861,7 @@
{
"cell_type": "code",
"execution_count": null,
- "id": "400a8a90-8f2a-468c-a9ba-4f124029858e",
+ "id": "b087868b-69cb-4dd2-b266-f68271eea1fe",
"metadata": {},
"outputs": [],
"source": []
@@ -847,16 +869,16 @@
],
"metadata": {
"kernelspec": {
- "display_name": "C++14",
- "language": "C++14",
- "name": "xcpp14"
+ "display_name": "C++17",
+ "language": "C++17",
+ "name": "xcpp17"
},
"language_info": {
"codemirror_mode": "text/x-c++src",
"file_extension": ".cpp",
"mimetype": "text/x-c++src",
"name": "c++",
- "version": "14"
+ "version": "17"
}
},
"nbformat": 4,