Init

ACMOJ-2090.cpp

@@ -0,0 +1,22 @@
+#include "2090.hpp"
+
+#include <iostream>
+
+signed main() {
+  sjtu::any_ptr a = sjtu::make_any_ptr(int(1));
+  sjtu::any_ptr b = a;
+
+  a.unwrap<int>() = 2;
+  std::cerr << b.unwrap<int>() << std::endl;  // 2
+  b = new std::string;
+  b.unwrap<std::string>() = "Hello, world!";
+  std::cerr << b.unwrap<std::string>() << std::endl;  // Hello, world!
+
+  try {
+    a.unwrap<std::string>() = "a";
+  } catch (const std::exception &e) {
+    std::cerr << e.what() << std::endl;  // bad cast
+  }
+
+  return 0;
+}