1

16/00/CMakeLists.txt

@@ -6,8 +6,11 @@ endif()
 set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
+set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/cmake;${CMAKE_MODULE_PATH}")
 
 project(CppCMakeDemo LANGUAGES CXX)
 
+include(MyUsefulFuncs)
+
 add_subdirectory(pybmain)
 add_subdirectory(biology)

17/00.cpp

@@ -0,0 +1,16 @@
+#include <iostream>
+#include <string>
+#include <map>
+
+using namespace std;
+
+int main() {
+    map<string, int> items = {
+        {"hello", 1},
+        {"world", 2},
+    };
+
+    items["time"] = 4;
+    int time = items.at("time");
+    cout << time << endl;
+}

17/00.py

@@ -0,0 +1,8 @@
+items = dict([
+    ("hello", 1),
+    ("world", 2),
+])
+
+items["time"] = 4
+time = items["time"]
+print(time)

17/00a.cpp

@@ -0,0 +1,15 @@
+#include <iostream>
+#include <string>
+#include <map>
+
+using namespace std;
+
+int main() {
+    map<string, int> items = {
+        {"hello", 1},
+        {"world", 2},
+    };
+
+    int time = items["hello"];
+    cout << time << endl;
+}

17/00b.cpp

@@ -0,0 +1,15 @@
+#include <iostream>
+#include <string>
+#include <map>
+
+using namespace std;
+
+int main() {
+    map<string, int> items = {
+        {"hello", 1},
+        {"world", 2},
+    };
+
+    int time = items["hell"];
+    cout << time << endl;
+}

17/01.cpp

@@ -0,0 +1,13 @@
+#include <iostream>
+#include <map>
+#include "printer.h"
+
+using namespace std;
+
+int main() {
+    map<string, int> m;
+    m["hello"] = 1;
+    m["world"] = 2;
+    cout << m << endl;
+    return 0;
+}

17/02.cpp

@@ -0,0 +1,13 @@
+#include <iostream>
+#include <map>
+#include "printer.h"
+
+using namespace std;
+
+int main() {
+    map<string, int> m;
+    m.at("hello") = 1;
+    m.at("world") = 2;
+    cout << m << endl;
+    return 0;
+}

17/printer.h

@@ -0,0 +1,39 @@
+#pragma once
+
+#include <iostream>
+#include <utility>
+#include <type_traits>
+
+namespace std {
+
+template <class T, class = const char *>
+struct __printer_test_c_str {
+    using type = void;
+};
+
+template <class T>
+struct __printer_test_c_str<T, decltype(std::declval<T>().c_str())> {};
+
+template <class T, int = 0, int = 0, int = 0,
+         class = decltype(std::declval<std::ostream &>() << *++std::declval<T>().begin()),
+         class = decltype(std::declval<T>().begin() != std::declval<T>().end()),
+         class = typename __printer_test_c_str<T>::type>
+std::ostream &operator<<(std::ostream &os, T const &v) {
+    os << '{';
+    auto it = v.begin();
+    if (it != v.end()) {
+        os << *it;
+        for (++it; it != v.end(); ++it)
+            os << ',' << *it;
+    }
+    os << '}';
+    return os;
+}
+
+template <class T1, class T2>
+std::ostream &operator<<(std::ostream &os, std::pair<T1, T2> const &v) {
+    os << '{' << v.first << ',' << v.second << '}';
+    return os;
+}
+
+}

17/xmake.lua

@@ -0,0 +1,2 @@
+target("exec")
+add_files("01.cpp")