ServicePack.h

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#ifndef DETECTORINFOSERVICE_SERVICEPACK_H
#define DETECTORINFOSERVICE_SERVICEPACK_H 1

// LArSoft libraries
#include "larcore/CoreUtils/ServiceUtil.h" // lar::providerFrom()
#include "larcorealg/CoreUtils/ProviderPack.h"

namespace lar {
  /*
  namespace details {

  } // namespace details
  */

  template <typename... Services>
  using ProviderPackFromServices = lar::ProviderPack<typename Services::provider_type...>;

  template <typename... Services>
  ProviderPackFromServices<Services...> extractProviders()
  {
    return {lar::providerFrom<Services>()...};
  }

} // namespace lar

//==============================================================================
//=== template implementation
//===
/*
namespace lar {
  namespace details {
    //--------------------------------------------------------------------------

    //--------------------------------------------------------------------------
  } // namespace details
} // namespace lar
*/

#endif // DETECTORINFOSERVICE_SERVICEPACK_H