std::sortable(3) Library Functions Manual std::sortable(3)

std::sortable - [alg.req.sortable], concept sortable

#include <iterator_concepts.h>

template<typename _Iter, typename _Rel ranges::less, typename _Proj identity>
concept std::sortable =  permutable<_Iter>
      && indirect_strict_weak_order<_Rel, projected<_Iter, _Proj>>

[alg.req.sortable], concept sortable

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