Discussion on replacing boost

[anaegel]

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[anaegel]

As suggested by @Nordegraf, we should try to reduce dependency on boost. Below is a list of files with corresponding references. We should review and remove dependencies, where appropriate.

• boost/mpl:
  ./ugbase/bridge/util_domain_dependent.h:#include <boost/mpl/if.hpp>
  ./ugbase/bridge/util_domain_dependent.h:#include <boost/mpl/list.hpp>
  ./ugbase/bridge/util_domain_dependent.h:#include <boost/mpl/empty.hpp>
  ./ugbase/bridge/util_domain_dependent.h:#include <boost/mpl/front.hpp>
  ./ugbase/bridge/util_domain_dependent.h:#include <boost/mpl/pop_front.hpp>
  ./ugbase/bridge/util_algebra_dependent.h:#include <boost/mpl/if.hpp>
  ./ugbase/bridge/util_algebra_dependent.h:#include <boost/mpl/list.hpp>
  ./ugbase/bridge/util_algebra_dependent.h:#include <boost/mpl/empty.hpp>
  ./ugbase/bridge/util_algebra_dependent.h:#include <boost/mpl/front.hpp>
  ./ugbase/bridge/util_algebra_dependent.h:#include <boost/mpl/pop_front.hpp>
  ./ugbase/bridge/util_algebra_dependent.h:#include "boost/mpl/size.hpp"
  ./ugbase/lib_disc/reference_element/element_list_traits.h:#include <boost/mpl/transform_view.hpp>
  ./ugbase/lib_disc/reference_element/element_list_traits.h:#include <boost/mpl/fold.hpp>
  ./ugbase/lib_disc/reference_element/element_list_traits.h:#include <boost/mpl/min_max.hpp>
  ./ugbase/common/util/factory.h:#include <boost/mpl/for_each.hpp>
  ./ugbase/common/util/factory.h:#include <boost/mpl/vector.hpp>
  ./ugbase/lib_grid/refinement/projectors/projectors.h:#include <boost/mpl/pair.hpp>
  ./ugbase/lib_grid/refinement/projectors/projectors.h:#include <boost/mpl/string.hpp>
  ./ugbase/lib_grid/refinement/projectors/projectors.h:#include <boost/mpl/vector.hpp>
  ./ugbase/common/util/detail/register_type_pair_functor.h:#include <boost/mpl/string.hpp>
  ./ugbase/lib_grid/grid_objects/grid_dim_traits.h:#include <boost/mpl/list.hpp>
  ./ugbase/lib_grid/tools/periodic_boundary_manager_impl.hpp:#include <boost/mpl/map.hpp>
  ./ugbase/lib_grid/tools/periodic_boundary_manager_impl.hpp:#include <boost/mpl/at.hpp>
  ./ugbase/common/util/end_boost_list.h:#include <boost/mpl/list.hpp>
  ./ugbase/common/util/archivar.h:#include <boost/mpl/for_each.hpp>
  ./ugbase/lib_disc/spatial_disc/disc_util/conv_shape.h:#include <boost/mpl/range_c.hpp>
  ./ugbase/lib_disc/spatial_disc/disc_util/conv_shape.h:#include <boost/mpl/for_each.hpp>
  ./ugbase/lib_disc/spatial_disc/elem_disc/err_est_data.h:#include <boost/mpl/for_each.hpp>
  ./ugbase/lib_disc/domain_traits.h:#include <boost/mpl/for_each.hpp>

• boost/graph:
  ./ugbase/lib_algebra/graph_interface/undirected.h:#include <boost/graph/adjacency_list.hpp>
  ./ugbase/lib_algebra/graph_interface/sparsematrix_boost.h:#include <boost/graph/properties.hpp> // put_get_helper
  ./ugbase/lib_algebra/ordering_strategies/algorithms/util.cpp:#include <boost/graph/adjacency_list.hpp>
  ./ugbase/lib_algebra/ordering_strategies/algorithms/util.cpp:#include <boost/graph/graph_traits.hpp>
  ./ugbase/lib_algebra/ordering_strategies/algorithms/SCC_ordering.cpp:#include <boost/graph/adjacency_list.hpp>
  ./ugbase/lib_algebra/ordering_strategies/algorithms/SCC_ordering.cpp:#include <boost/graph/graph_traits.hpp>
  ./ugbase/lib_algebra/ordering_strategies/algorithms/SCC_ordering.cpp:#include <boost/graph/properties.hpp>
  ./ugbase/lib_algebra/ordering_strategies/algorithms/SCC_ordering.cpp:#include <boost/graph/graph_utility.hpp>
  ./ugbase/lib_algebra/ordering_strategies/algorithms/SCC_ordering.cpp:#include <boost/graph/strong_components.hpp>
  ./ugbase/lib_algebra/ordering_strategies/algorithms/boost_cuthill_mckee_ordering.cpp:#include <boost/graph/adjacency_list.hpp>
  ./ugbase/lib_algebra/ordering_strategies/algorithms/boost_cuthill_mckee_ordering.cpp:#include <boost/graph/graph_traits.hpp>
  ./ugbase/lib_algebra/ordering_strategies/algorithms/boost_cuthill_mckee_ordering.cpp:#include <boost/graph/properties.hpp>
  ./ugbase/lib_algebra/ordering_strategies/algorithms/boost_cuthill_mckee_ordering.cpp:#include <boost/graph/cuthill_mckee_ordering.hpp>
  ./ugbase/lib_algebra/ordering_strategies/algorithms/boost_minimum_degree_ordering.cpp:#include <boost/graph/adjacency_list.hpp>
  ./ugbase/lib_algebra/ordering_strategies/algorithms/topological_ordering.cpp:#include <boost/graph/adjacency_list.hpp>
  ./ugbase/lib_algebra/ordering_strategies/algorithms/topological_ordering.cpp:#include <boost/graph/graph_traits.hpp>
  ./ugbase/lib_algebra/ordering_strategies/algorithms/topological_ordering.cpp:#include <boost/graph/properties.hpp>
  ./ugbase/lib_algebra/ordering_strategies/algorithms/boost_minimum_degree_ordering.cpp:#include <boost/graph/graph_traits.hpp>
  ./ugbase/lib_algebra/ordering_strategies/algorithms/boost_minimum_degree_ordering.cpp:#include <boost/graph/properties.hpp>
  ./ugbase/lib_algebra/ordering_strategies/algorithms/boost_minimum_degree_ordering.cpp:#include <boost/graph/minimum_degree_ordering.hpp>
  ./ugbase/lib_disc/ordering_strategies/algorithms/directional_ordering.cpp:#include <boost/graph/adjacency_list.hpp>
  ./ugbase/lib_disc/ordering_strategies/algorithms/directional_ordering.cpp:#include <boost/graph/graph_traits.hpp>
  ./ugbase/lib_disc/ordering_strategies/algorithms/directional_ordering.cpp:#include <boost/graph/properties.hpp>
  ./ugbase/lib_disc/ordering_strategies/algorithms/directional_ordering.cpp:#include <boost/graph/cuthill_mckee_ordering.hpp>
  ./ugbase/lib_disc/ordering_strategies/algorithms/riverorder.h:#include <boost/graph/adjacency_list.hpp>
  ./ugbase/lib_disc/ordering_strategies/algorithms/riverorder.h:#include <boost/graph/graph_traits.hpp>
  ./ugbase/lib_disc/ordering_strategies/algorithms/riverorder.h:#include <boost/graph/properties.hpp>

• boost/iterator:
  ./ugbase/lib_algebra/graph_interface/sparsematrix_boost.h:#include <boost/iterator/counting_iterator.hpp>
  ./ugbase/lib_algebra/graph_interface/parallel_matrix.h:#include <boost/iterator/filter_iterator.hpp>
  ./ugbase/lib_algebra/graph_interface/boost_util.h:#include <boost/iterator/filter_iterator.hpp>
  ./ugbase/lib_algebra/graph_interface/undirected_boost.h:#include <boost/iterator/counting_iterator.hpp>
  ./ugbase/lib_grid/algorithms/quadrialteral_util_impl.h:#include "boost/iterator/transform_iterator.hpp"

• boost/serialization:
  ./ugbase/common/boost_serialization.h:#include <boost/serialization/access.hpp>
  ./ugbase/common/boost_serialization.h:#include <boost/serialization/export.hpp>
  ./ugbase/common/boost_serialization.h:#include <boost/serialization/level.hpp>
  ./ugbase/common/boost_serialization.h:#include <boost/serialization/nvp.hpp>
  ./ugbase/common/boost_serialization.h:#include <boost/serialization/version.hpp>
  ./ugbase/lib_grid/refinement/projectors/neurite_projector.h:#include <boost/serialization/split_member.hpp> // for separate load/save methods
  ./ugbase/common/util/field.h:#include <boost/serialization/split_member.hpp> // if boost is not from BoostForUG4 for separate load/save methods

• boost/archive:
  ./ugbase/common/util/base64_file_writer.cpp:#include <boost/archive/iterators/transform_width.hpp>
  ./ugbase/common/util/base64_file_writer.cpp:#include <boost/archive/iterators/base64_from_binary.hpp>
  ./ugbase/common/util/base64_file_writer.cpp:#include <boost/archive/iterators/ostream_iterator.hpp>
  ./ugbase/lib_grid/file_io/file_io_lgb.cpp:#include <boost/archive/text_oarchive.hpp>
  ./ugbase/lib_grid/file_io/file_io_lgb.cpp:#include <boost/archive/text_iarchive.hpp>
  ./ugbase/lib_grid/file_io/file_io_ugx.cpp:#include <boost/archive/text_oarchive.hpp>
  ./ugbase/lib_grid/file_io/file_io_ugx.cpp:#include <boost/archive/text_iarchive.hpp>
  ./ugbase/lib_disc/domain_impl.h: #include <boost/archive/text_oarchive.hpp>
  ./ugbase/lib_disc/domain_impl.h: #include <boost/archive/text_iarchive.hpp>

• boost/math: TODO: repalce by std::fpclassify?
  ./ugbase/lib_algebra/algebra_common/vector_util.h:#include <boost/math/special_functions/fpclassify.hpp>
  ./ugbase/common/util/number_util.h:#include <boost/math/special_functions/fpclassify.hpp>

• boost/geometry:
  ./ugbase/lib_algebra/graph_interface/undirected.h:#include <boost/geometry/iterators/concatenate_iterator.hpp>

• boost/algorithm:
  ./ugbase/lib_algebra/common/matrixio/matrix_io_mtx.h:#include <boost/algorithm/string.hpp>
  ./ugbase/lib_grid/refinement/regular_refinement.cpp:#include "boost/container/vector.hpp" // for bool-vectors

• boost/type_traits: "Since C++11, some functions provided by Boost.TypeTraits can be found in the standard library. You can access those functions through the header file type_traits. However, Boost.TypeTraits provides additional functions.": https://theboostcpplibraries.com/boost.typetraits
  ./ugbase/registry/class.h:#include <boost/type_traits.hpp>
  ./ugbase/registry/registry.h:#include <boost/type_traits.hpp>
  ./ugbase/common/util/archivar.h:#include <boost/type_traits/is_base_of.hpp>
  ./ugbase/lib_algebra/operator/interface/constrained_linear_iterator.h:#include <boost/type_traits/is_base_of.hpp>
  ./ugbase/common/util/factory.h:#include <boost/type_traits/is_base_of.hpp>

boost:

• boost::function and std::function are equivalent: https://theboostcpplibraries.com/boost.function
  ./ugbase/common/util/message_hub.h:#include <boost/function.hpp>
  ./ugbase/bridge/disc_bridges/user_data_bridge.cpp:#include <boost/function.hpp>
  ./ugbase/lib_disc/spatial_disc/elem_disc/inner_boundary/inner_boundary.h:#include <boost/function.hpp>
  ./ugbase/lib_disc/function_spaces/integrate.h:#include <boost/function.hpp>
  ./ugbase/lib_disc/function_spaces/grid_function_util.h:#include <boost/function.hpp>
  ./ugbase/registry/registry.h:#include <boost/function.hpp>
  ./ugbase/lib_grid/algorithms/extrusion/expand_layers.cpp:#include <boost/function.hpp>
  ./ugbase/lib_grid/parallelization/parallelization_util.h:#include <boost/function.hpp>
  ./ugbase/lib_grid/grid/grid.h:#include <boost/function.hpp>
  ./ugbase/bindings/vrl/user_data.cpp:#include <boost/function.hpp>
  ./ugbase/pcl/pcl_layout_tests.h:#include <boost/function.hpp>
  ./ugbase/lib_disc/spatial_disc/elem_disc/dirac_source/lagrange_dirac_source.h:#include <boost/function.hpp>

• Boost.Bind was added to the standard library with C++11. If your development environment supports C++11, you will find the function std::bind(): https://theboostcpplibraries.com/boost.bind
  ./ugbase/bridge/misc_bridges/test_bridge.cpp:#include <boost/bind.hpp>
  ./ugbase/common/util/message_hub.h:#include <boost/bind.hpp>

• Boost.LexicalCast: Boost.LexicalCast provides a cast operator, boost::lexical_cast, that can convert numbers from strings to numeric types like int or double and vice versa. boost::lexical_cast is an alternative to functions like std::stoi(), std::stod(), and std::to_string(), which were added to the standard library in C++11.:
  ./ugbase/lib_grid/file_io/file_io_swc.cpp:#include <boost/lexical_cast.hpp>
  ./ugbase/lib_algebra/common/matrixio/matrix_io_mtx.h:#include <boost/lexical_cast.hpp>
  ./ugbase/lib_grid/refinement/projectors/neurite_projector.cpp:#include <boost/lexical_cast.hpp>

• Boost.StaticAssert
  ./ugbase/common/util/archivar.h:#include <boost/static_assert.hpp>
  ./ugbase/common/util/factory.h:#include <boost/static_assert.hpp>

• Boost.EnableIf makes it possible to disable overloaded function templates or specialized class templates. Disabling means that the compiler ignores the respective templates. This helps to prevent ambiguous scenarios in which the compiler doesn’t know which overloaded function template to use. It also makes it easier to define templates that can be used not just for a certain type but for a group of types. **Since C++11, Boost.EnableIf has been part of the standard library. **You can call the functions introduced in this chapter without using a Boost library; just include the header file type_traits.
  ./ugbase/lib_algebra/operator/interface/constrained_linear_iterator.h:#include <boost/core/enable_if.hpp>
  => Done
  More complicated: boost::enable_if_c
  ./ugbase/lib_disc/operator/composite_conv_check_impl.h:#include <boost/core/enable_if.hpp>

• Miscellaneous
  ./ugbase/common/util/crc32.cpp:#include "boost/crc.hpp"
  ./ugbase/common/util/smart_pointer.h:#include <boost/pointee.hpp>
  ./ugbase/common/types.h:#include "boost/cstdint.hpp"
  ./ugbase/common/util/message_hub.h:#include <boost/function_equal.hpp>
  ./ugbase/registry/class.h:#include <boost/optional.hpp>

UG4 only:
./ugbase/lib_grid/algorithms/heightfield_util.h:#include "common/boost_serialization.h"
./ugbase/lib_grid/algorithms/serialization.cpp:// #include "common/boost_serialization_routines.h"
./ugbase/lib_grid/algorithms/raster_layer_util.h:#include "common/boost_serialization.h"
./ugbase/lib_grid/file_io/file_io_lgb.cpp:#include "common/boost_serialization_routines.h"
./ugbase/lib_grid/file_io/file_io_ugx.cpp:#include "common/boost_serialization_routines.h"
./ugbase/lib_grid/refinement/projectors/refinement_projector.h:#include "common/boost_serialization.h"
./ugbase/common/util/archivar.h:#include "../boost_serialization.h"
./ugbase/common/util/field.h:#include "common/boost_serialization.h"

./ugbase/common/util/factory.h:#include "../boost_serialization.h"
./ugbase/common/boost_serialization_routines.h:#include "boost_serialization.h"
./ugbase/common/profiler/freq_adapt.cpp:#include //used for atoi. Better: boost::lexical_cast
./ugbase/lib_disc/domain_impl.h: #include "common/boost_serialization_routines.h"

./ugbase/bridge/util_algebra_dependent.h:#include "common/util/end_boost_list.h"
./ugbase/lib_algebra/graph_interface/bidirectional.h:#include "sparsematrix_boost.h"
./ugbase/lib_algebra/graph_interface/undirected.h:#include "sparsematrix_boost.h"
./ugbase/lib_algebra/graph_interface/parallel_matrix.h:#include "sparsematrix_boost.h"

./ugbase/lib_algebra/ordering_strategies/algorithms/ordering_algorithms.cpp:#include "boost_cuthill_mckee_ordering.cpp"
./ugbase/lib_algebra/ordering_strategies/algorithms/ordering_algorithms.cpp:#include "boost_minimum_degree_ordering.cpp"

./ugbase/lib_algebra/ordering_strategies/algorithms/topological_ordering.cpp:#include "lib_algebra/graph_interface/sparsematrix_boost.h"
./ugbase/lib_algebra/ordering_strategies/algorithms/topological_ordering.cpp:#include "lib_algebra/graph_interface/parallel_matrix_boost.h"
./ugbase/lib_algebra/ordering_strategies/algorithms/topological_ordering.cpp:#include "lib_algebra/graph_interface/bidirectional_boost.h"

not used:
./ugbase/common/util/base64_file_writer.cpp://#include <boost/filesystem.hpp>
./ugbase/lib_grid/algorithms/serialization.cpp:// #include <boost/archive/text_oarchive.hpp>
./ugbase/lib_grid/algorithms/serialization.cpp:// #include <boost/archive/text_iarchive.hpp>
./ugbase/common/util/bucket_sorter.hpp://#include <boost/limits.hpp>