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Types
=====
*#include <pagmo/types.hpp>*
.. doxygentypedef:: pagmo::vector_double
.. doxygentypedef:: pagmo::sparsity_pattern
.. doxygentypedef:: pagmo::pop_size_t
.. cpp:namespace-push:: pagmo
.. cpp:type:: individuals_group_t = std::tuple<std::vector<unsigned long long>, std::vector<vector_double>, std::vector<vector_double>>
.. versionadded:: 2.11
Group of individuals.
This tuple represents a group of individuals via:
* a vector of ``unsigned long long`` representing the IDs of the individuals,
* a vector of :cpp:type:`~pagmo::vector_double` representing the decision vectors
(or chromosomes) of the individuals,
* another vector of :cpp:type:`~pagmo::vector_double` representing the fitness
vectors of the individuals.
In other words, :cpp:type:`~pagmo::individuals_group_t` is a stripped-down version of
:cpp:class:`~pagmo::population` without the :cpp:class:`~pagmo::problem`. :cpp:type:`~pagmo::individuals_group_t`
is used to exchange individuals between the islands of an :cpp:class:`~pagmo::archipelago` during migration.
.. cpp:namespace-pop::
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