callback_helpers.hpp

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// Copyright (c) 2014-2023, Lawrence Livermore National Security, LLC.
// Produced at the Lawrence Livermore National Laboratory.
// Written by the LBANN Research Team (B. Van Essen, et al.) listed in
// the CONTRIBUTORS file. <lbann-dev@llnl.gov>
//
// LLNL-CODE-697807.
// All rights reserved.
//
// This file is part of LBANN: Livermore Big Artificial Neural Network
// Toolkit. For details, see http://software.llnl.gov/LBANN or
// https://github.com/LLNL/LBANN.
//
// Licensed under the Apache License, Version 2.0 (the "Licensee"); you
// may not use this file except in compliance with the License.  You may
// obtain a copy of the License at:
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied. See the License for the specific language governing
// permissions and limitations under the license.

#include "lbann/utils/exception.hpp"

#include <string>
#include <vector>

namespace lbann {
namespace {
template <typename T>
std::vector<T*>
select_things_by_name(std::vector<T*> const& things,
                      std::vector<std::string> const& thing_names)
{

  std::vector<T*> out_things;
  for (auto const& name : thing_names) {
    auto it = std::find_if(things.begin(), things.end(), [&name](const T* t) {
      return t->get_name() == name;
    });
    if (it != things.end())
      out_things.push_back(*it);
    else
      LBANN_ERROR(std::string("Requested thing \"") + name +
                  "\" does not exist in the list of things.");
  }
  return out_things;
}
} // namespace
} // namespace lbann