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std::ranges..._view::base(3)   C++ Standard Libary  std::ranges..._view::base(3)

NAME
     std::ranges::common_view::base - std::ranges::common_view::base

Synopsis
	constexpr  V  base()  const&  requires	std::copy_constructible<V>;  (1)
     (since C++20)
	constexpr  V  base()   &&;					     (2)
     (since C++20)

	Returns a copy of the underlying view.

	1) Copy constructs the result from the underlying view.
	2) Move constructs the result from the underlying view.

Parameters
	(none)

Return value
	A copy of the underlying view.

Example
     // Run this code

      #include <iostream>
      #include <ranges>
      #include <string>

      int main()
      {
	  std::string str { "C++20" };
	  auto view = std::views::common(str);

	  std::string copy_of_str = view.base();
	  std::cout << "copy of str: [" << copy_of_str << "]\n";
	  std::cout << "view.base(): [" << view.base() << "]\n";

	  std::string move_str = std::move(view.base());
	  std::cout << "moved str:   [" << move_str << "]\n";
	  std::cout << "view.base(): [" << view.base() << "]\n"; // unspecified
      }

Possible output:
      copy of str: [C++20]
      view.base(): [C++20]
      moved str:   [C++20]
      view.base(): []

http://cppreference.com 	   2024.06.10	    std::ranges..._view::base(3)
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