Class UniqueIncreasingCoroutine

test/assign-and-constructible-test.cpp:11–21

Coroutine which increases it's return value by every call

namespace {
/// Coroutine which increases it's return value by every call
class UniqueIncreasingCoroutine {
  std::unique_ptr<std::size_t> state = make_unique<std::size_t>(0);

public:
  UniqueIncreasingCoroutine() {
  }

  std::size_t operator()() {
    return (*state)++;
  }
};

/// Coroutine which increases it's return value by every call
class CopyableIncreasingCoroutine {