cpp-lazy-stream/include/stream/to.h

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

#pragma once

#include <map>
#include <set>
#include <vector>

namespace stream::ranges {
template <typename C> class store {
private:
  C & to_;

public:
  store(C & to) : to_(to) {}

  template <typename Stream>
  friend void operator|(Stream && stream, store && store) {
    store.to_.emplace(store.to_.end(), stream.begin(), stream.end());
  }
};

template <template <typename...> class C> struct to_range {
  template <typename Stream> friend auto operator|(Stream && stream, to_range) {
    return C(stream.begin(), stream.end());
  }
};

template <template <typename...> class C> auto to() { return to_range<C>(); }
auto to_vector() { return to<std::vector>(); }
auto to_map() { return to<std::map>(); }
auto to_set() { return to<std::set>(); }
}