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Section: 24.6.1 [container.adaptors.general] Status: WP Submitter: Hewill Kang Opened: 2022-09-16 Last modified: 2022-11-17
Priority: Not Prioritized
View all issues with WP status.
P0429R9 removed the flat_map's single-range argument constructor and uses C++23-compatible from_range_t version constructor with alias templates range-key-type and range-mapped-type to simplify the deduction guide.This makes cont-key-type and cont-mapped-type no longer useful, we should remove them.
[2022-10-12; Reflector poll]
Set status to Tentatively Ready after seven votes in favour during reflector poll.
[2022-11-12 Approved at November 2022 meeting in Kona. Status changed: Voting → WP.]
This wording is relative to N4917.
Modify 24.6.1 [container.adaptors.general] as indicated:
-7- The exposition-only alias template iter-value-type defined in 24.3.1 [sequences.general] and the exposition-only alias templates iter-key-type and iter-mapped-type defined in 24.4.1 [associative.general] may appear in deduction guides for container adaptors.
-8- The following exposition-only alias templates may appear in deduction guides for container adaptors: template<class Container> using cont-key-type = // exposition only remove_const_t<typename Container::value_type::first_type>; template<class Container> using cont-mapped-type = // exposition only typename Container::value_type::second_type;