I learnt C++ in 2018 and have no regrets(vishnubharathi.codes)

  std::vector values = {1, 2, 3};
  for (auto v : values) { ... }

  for (auto &&[key, value] : mapOfStuff) { ... }

  struct Foo {
    Foo(std::initializer_list<int> values) { ... }
  }

  Foo f = {1, 2, 3};

  struct Person {
    string name
  }
  Person p = {.name = "bob"};

  getNumbers()
    | view::filter([](int a, int b) { return a > b; }
    | view::reverse()
    | view::take(10);

  template <typename T>
    T add100(T v) {
      // Compiler will fail on this line:
      return v + 100;  
    }

  auto n = add100("hello world");

  template <Incrementable T>
    T add100(T v) {
      return v + 100;
    }

  // Compiler fails on this line:
  auto n = add100("hello world");