lib/import.cpp

The following code example is taken from the book
C++23 - The Complete Guide by Nicolai M. Josuttis, Leanpub, 2026
The code is licensed under a Creative Commons Attribution 4.0 International License.

---

// raw code

import std;                       // make the whole C++ standard library available

int main()
{
  std::map<std::string, std::chrono::system_clock::time_point> dates;

  dates["now"] = std::chrono::system_clock::now();

  for (const auto& [key, val] : dates | std::views::take(5)) {
    std::cout << key << ": " << val << '\n';
  }
}