cpp-lazy-stream/include/stream/view/empty.h

//
//  empty.h
//  stream
//
//  Created by Sam Jaffe on 3/29/23.
//

#pragma once

#include <stream/forward.h>

namespace stream::ranges {
template <typename T> struct empty_view {
  static T * begin() { return nullptr; }
  static T * end() { return nullptr; }
  static bool empty() { return true; }
  static size_t size() { return 0; }
};
}

namespace stream::ranges::views {
template <typename T> inline constexpr empty_view<T> empty;
}