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C++23 - cppreference.com
The current revision of the C++ standard.
C++23 feature Paper(s) Stacktrace library (FTM)* P0881R7
P2301R1 12 (partial)*
14* 19.34* <stdatomic.h> (FTM)* P0943R6 12 15 19.31* 14.0.3* std::is_scoped_enum (FTM)* P1048R1 11 12 19.30* 13.0.0* std::basic_string::contains(), std::basic_string_view::contains() (FTM)* P1679R3 11 12 19.30* 13.0.0* std::to_underlying (FTM)* P1682R3 11 13 19.30* 13.1.6* Relaxing requirements for time_point<>::clock P2212R2 N/A N/A N/A N/A Providing size feedback in the Allocator interface (FTM)* P0401R6 15 19.30* 14.0.3* <spanstream>: string-stream with std::span-based buffer (FTM)* P0448R4 12 19.31* std::out_ptr(), std::inout_ptr() (FTM)* P1132R8 14 19 19.30* constexpr type_info::operator==() (FTM)* P1328R1 12 17 19.33**
19.34* 15.0.0* Iterator pair constructors for std::stack and std::queue (FTM)* P1425R4 12 14 19.31* 14.0.3* Non-deduction context for allocators in container deduction guides P1518R2 12* 13* 19.31** 13.1.6** ranges::starts_with() and ranges::ends_with() (FTM)* P1659R3 17 (partial)*
18 19.31* 16.0.0* Prohibiting std::basic_string and std::basic_string_view construction from nullptr P2166R1 12 13 19.30* 13.1.6* std::invoke_r() (FTM)* P2136R3 12 17 19.31* 15.0.0* Range constructor for std::basic_string_view P1989R2 11 14 19.30* 14.0.3* Default template arguments for std::pair's forwarding constructor P1951R1 14 14 19.30* 14.0.3* Remove Garbage Collection and Reachability-Based Leak Detection (library support) P2186R2 12 14 19.30* 14.0.3* zip: views::zip, views::zip_transform, views::adjacent, and views::adjacent_transform (FTM)* P2321R2 13 15 (partial)* 19.33*(partial)***
19.37* 14.0.3* Heterogeneous erasure overloads for associative containers (FTM)* P2077R3 19.32* std::byteswap() (FTM)* P1272R4 12 14 19.31* 14.0.3* Printing volatile T* P1147R1 11.3 14 19.31* 14.0.3* basic_string::resize_and_overwrite() (FTM)* P1072R10 12 14 19.31* 14.0.3* Monadic operations for std::optional (FTM)* P0798R8 12 14 19.32* 14.0.3* std::move_only_function (FTM)* P0288R9 12 19.32* Add a conditional noexcept specification to std::exchange P2401R0 12 14 19.25* 14.0.3* Require std::span & std::basic_string_view to be TriviallyCopyable P2251R1 Yes Yes Yes Yes Clarifying the status of the âC headersâ P2340R1 Yes Yes Yes Yes <expected> (FTM)* P0323R12
P2549R1 12 16 19.33* 15.0.0* constexpr for <cmath> and <cstdlib> (FTM)* P0533R9 4.6 (partial)* std::unreachable() (FTM)* P0627R6 12 15 19.32* 14.0.3* Deprecating std::aligned_storage and std::aligned_union P1413R3 13 16 19.33* std::reference_constructs_from_temporary & std::reference_converts_from_temporary (FTM)* P2255R2 13 (partial)*
14 21 (partial)* constexpr std::unique_ptr (FTM)* P2273R3 12 16 19.33* 15.0.0* Constructing containers and strings from ranges with ranges::to(), tagged constructors, insert and assign member functions (FTM)* (FTM)* P1206R7 14 (partial)*
15 17 19.34* 15.0.0* Pipe support for user-defined range adaptors (ranges::range_adaptor_closure, std::bind_back) (FTM)* (FTM)* P2387R3 13 (partial)*
14 19 19.34* ranges::iota(), ranges::shift_left(), and ranges::shift_right() (FTM)* (FTM)* P2440R1 13 (partial)* 19.34* views::join_with (FTM)* P2441R2 13 19.34* views::chunk and views::slide (FTM)* (FTM)* P2442R1 13 19.33* views::chunk_by (FTM)* P2443R1 13 18 19.33* 16.0.0* std::mdspan: a non-owning multidimensional array reference (FTM)* P0009R18
P2599R2
P2604R0
P2613R1
P2763R1 17 (partial)*
18 19.39* 15.0.0* <flat_map> (FTM)* P0429R9 15 20 <flat_set> (FTM)* P1222R4 15 21 ranges::find_last(), ranges::find_last_if(), and ranges::find_last_if_not() (FTM)* P1223R5 13 19 19.36* Freestanding Library: Easy <utility>, <ranges>, and <iterator> P1642R11 13* N/A views::stride (FTM)* P1899R3 13 19.34* Compatibility between std::tuple and tuple-like objects (FTM)* P2165R4 14 2.9 (partial)* 19.36* (partial)*
19.37* partial* Rectifying constant iterators, sentinels, and ranges. views::as_const (FTM)* P2278R4 13 19.35* (partial)*
19.36* Formatting Ranges (FTM)* P2286R8 15 (partial)*
15.2 16 19.37*(partial)*
19.39*(partial)*
19.41*(partial)*
19.42* 15.0.0* Improve default container formatting (FTM)* P2585R1 15 16 (partial)*
17 19.42* 15.0.0* Formatted output library <print> (FTM)* P2093R14
P2539R4 14 17 (partial)*
18 19.37* 15.0.0**
16.0.0* Formatting std::thread::id and std::stacktrace (FTM)* P2693R1 14 17 (partial)* 19.38* 15.0.0* constexpr for integral overloads of std::to_chars() and std::from_chars() (FTM)* P2291R3 13 16 19.34* 15.0.0* ranges::contains() and ranges::contains_subrange() (FTM)* P2302R4 13 18 (partial)*
19 19.34* 16.0.0** Ranges fold algorithms (FTM)* P2322R6 13 19.35* views::cartesian_product (FTM)* P2374R4
P2540R1 13 19.37* Adding move-only types support for comparison concepts (equality_comparable, totally_ordered, three_way_comparable) (FTM)* P2404R3 19.36* Ranges iterators as inputs to non-ranges algorithms (FTM)* P2408R5 19.34* constexpr std::bitset (FTM)* P2417R2 13 16 19.34* 15.0.0* basic_string::substr() && P2438R2 16 19.34* 15.0.0* views::as_rvalue (FTM)* P2446R2 13 16 19.34* 15.0.0* Standard Library Modules (FTM)* P2465R3 15* 17 (partial)* 19.35*
(partial)*
19.36* std::forward_like() (FTM)* P2445R1 14 16 19.34* 15.0.0* Support exclusive mode for std::fstream (FTM)* P2467R1 12 18 19.36* 16.0.0* views::repeat (FTM)* P2474R2 13 17 19.36* 15.0.0* Relaxing range adaptors to allow for move-only types (FTM)* P2494R2 14 17 19.34* 15.0.0* std::basic_string_view range constructor should be explicit P2499R0 12.2 16 19.34* 15.0.0* std::generator: synchronous coroutine generator for ranges (FTM)* P2502R2
P2787R0 14 19.43* Add a conditional noexcept specification to std::apply P2517R1 10 18 19.34* 16.0.0* Explicit lifetime management (std::start_lifetime_as) (FTM)* P2590R2
P2679R2 Clarify handling of encodings in localized formatting of chrono types (FTM)* P2419R2 15* 19.34** std::move_iterator should not always be input_iterator (FTM)* P2520R0 12.3* 17* 19.34** 15.0.0* Deduction guides update for explicit object parameter call operators LWG3617 14 19.34* Deduction guides update for static operator() P1169R4 13 16 19.39* 15.0.0* Standard names and library support for extended floating-point types P1467R9 13 19.37** Monadic operations for std::expected (FTM)* P2505R5 13 17 19.36* 15.0.0* views::enumerate (FTM)* P2164R9 13 19.37* std::is_implicit_lifetime (FTM)* P2674R1 20 std::common_reference_t of std::reference_wrapper should be a reference type (FTM)* (FTM)* P2655R3 19.37* Disallowing user specialization of std::allocator_traits P2652R2 19 19.37* Deprecating std::numeric_limits::has_denorm P2614R2 18 19.37* 16.0.0* Making Multi-Param Constructors Of views explicit P2711R1 17 (partial)* 19.36** 15.0.0* DR20: Relaxing Ranges Just A Smidge (FTM)* P2609R3 15 20 19.37* DR20: Stashing Stashing Iterators For Proper Flattening P2770R0 14 18 19.37* DR17: std::visit() for classes derived from std::variant (FTM)* P2162R2 11.3 13 19.20**
19.30* 13.1.6* DR20: Conditionally borrowed ranges P2017R1 11 16 19.30* DR20: Repairing input range adaptors and std::counted_iterator P2259R1 12 19.30*(partial)*
19.31* DR20: views::join should join all views of ranges P2328R1 11.2 15 19.30* 14.0.3* DR20: view does not require default_initializable (FTM)* P2325R3 11.3 16 19.30* 15.0.0* DR20: Range adaptor objects bind arguments by value P2281R1 11 14 19.29 (16.10)*
(partial)*
19.31* 14.0.3* DR20: constexpr for std::optional and std::variant (FTM)* (FTM)* P2231R1 11.3 (partial)*
12 13 (partial)*
19 19.31* 13.1.6* (partial) DR20: views::lazy_split and redesigned views::split P2210R2 12 16 19.31* 15.0.0* DR20: Fix ranges::istream_view P2432R1 12 16 19.31* 15.0.0* DR20: view with ownership (FTM)* P2415R2 12 14 19.31* 14.0.3* DR20: Fixing locale handling in chrono formatters (FTM)* P2372R3
P2418R2 13 19.31* DR20: Cleaning up integer-class types P2393R1 19.32* DR20: Compile-time format string checks; Reducing binary code size of std::format() family (FTM)* P2216R3 13 14 (partial)*
15 19.32* 14.0.3* DR20: Add support for non-const-formattable types to std::format P2418R2 13 15 19.32* 14.0.3* DR20: std::basic_format_string P2508R1 13 15 19.35* 14.0.3* DR20: Poison Pills are Too Toxic (FTM)* P2602R2 14 19 19.36* DR20: std::format fill character allowances P2572R1 14 17 19.37* DR20: Improving std::format's width estimation P2675R1 14 17 19.38* DR20: std::barrier's phase completion guarantees (FTM)* P2588R3 19.28 (16.8)**
19.36*
C++23 feature
Paper(s)
* - hover over a cell marked with the star * to see additional pop-up notes.
DRnn - the number nn after "DR" denotes target C++ revision the Defect Report is applied to, e.g., DR20 → C++20.
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