Experimental C++ Standard Library headers

 

C++

Compiler support

Freestanding and hosted

Language

Standard library

Standard library headers

Named requirements

Feature test macros (C++20)

Language support library

Concepts library (C++20)

Metaprogramming library (C++11)

Diagnostics library

General utilities library

Strings library

Containers library

Iterators library

Ranges library (C++20)

Algorithms library

Numerics library

Localizations library

Input/output library

Filesystem library (C++17)

Regular expressions library (C++11)

Concurrency support library (C++11)

Execution support library (C++26)

Technical specifications

Symbols index

External libraries

 

Standard library headers

Language support <cfloat> <climits> <compare> (C++20) <coroutine> (C++20) <csetjmp> <csignal> <cstdarg> <cstddef> <cstdint> (C++11) <cstdlib> <exception> <initializer_list> (C++11)    <limits> <new> <source_location> (C++20) <stdfloat> (C++23) <typeinfo> <version> (C++20) Concepts <concepts> (C++20) Diagnostics <cassert> <cerrno> <debugging> (C++26) <stacktrace> (C++23) <stdexcept> <system_error> (C++11) Memory management <memory> <memory_resource> (C++17) <scoped_allocator> (C++11) Metaprogramming <type_traits> (C++11) <ratio> (C++11)

General utilities <any> (C++17) <bitset> <bit> (C++20) <charconv> (C++17) <expected> (C++23) <format> (C++20) <functional> <optional> (C++17) <tuple> (C++11) <typeindex> (C++11) <utility> <variant> (C++17) Containers <array> (C++11) <deque> <flat_map> (C++23) <flat_set> (C++23) <forward_list> (C++11) <inplace_vector> (C++26)    <list> <map> <mdspan> (C++23) <queue> <set> <span> (C++20) <stack> <unordered_map> (C++11) <unordered_set> (C++11) <vector> Iterators <iterator> Ranges <generator> (C++23) <ranges> (C++20)

Algorithms <algorithm> <numeric> Strings <cctype> <cstring> <cuchar> (C++11) <cwchar> <cwctype> <string_view> (C++17) <string> Text processing <clocale> <codecvt> (C++11/17/26*) <locale> <regex> (C++11) <text_encoding> (C++26)    Numerics <cfenv> (C++11) <cmath> <complex> <linalg> (C++26) <numbers> (C++20) <random> (C++11) <valarray> Time <chrono> (C++11) <ctime> C compatibility <ccomplex> (C++11/17/20*) <ciso646> (until C++20) <cstdalign> (C++11/17/20*) <cstdbool> (C++11/17/20*) <ctgmath> (C++11/17/20*)

Input/output <cinttypes> (C++11) <cstdio> <filesystem> (C++17) <fstream> <iomanip> <iosfwd> <iostream> <ios> <istream> <ostream> <print> (C++23) <spanstream> (C++23) <sstream> <streambuf> <strstream> (C++98/26*) <syncstream> (C++20) Concurrency support <atomic> (C++11) <barrier> (C++20) <condition_variable> (C++11) <future> (C++11) <hazard_pointer> (C++26) <latch> (C++20) <mutex> (C++11) <rcu> (C++26) <semaphore> (C++20) <shared_mutex> (C++14) <stdatomic.h> (C++23) <stop_token> (C++20) <thread> (C++11) Execution support <execution> (C++17)

 

Experimental library headers

Execution P2300
<experimental/execution>
Filesystem TS
<experimental/filesystem>
Parallelism TS (v1, v2)
experimental/algorithm experimental/execution_policy experimental/exception_list	experimental/numeric <experimental/simd> experimental/task_block
Library Fundamentals TS (v1, v2, v3)
experimental/algorithm <experimental/any> experimental/array experimental/chrono experimental/deque experimental/forward_list <experimental/functional> experimental/future experimental/iterator experimental/list experimental/map experimental/memory <experimental/memory_resource> experimental/numeric <experimental/optional> experimental/propagate_const	experimental/random experimental/ratio experimental/regex experimental/scope experimental/set experimental/source_location experimental/string <experimental/string_view> experimental/system_error experimental/tuple experimental/type_traits experimental/unordered_map experimental/unordered_set experimental/utility experimental/vector
Concurrency TS
experimental/atomic experimental/barrier	experimental/future experimental/latch
Ranges TS
<experimental/ranges/algorithm> <experimental/ranges/concepts> <experimental/ranges/functional>         <experimental/ranges/iterator>	<experimental/ranges/random> <experimental/ranges/tuple> <experimental/ranges/type_traits> <experimental/ranges/utility>
Coroutines TS
experimental/coroutine
Networking TS
experimental/buffer experimental/executor experimental/internet experimental/io_context	<experimental/net> experimental/netfwd experimental/socket experimental/timer
Reflection TS
<experimental/reflect>

 

The interface of Experimental C++ standard libraries (i.e. libraries introduced by C++ TR's/TS's) is defined by the following collection of headers.

Execution P2300
<experimental/execution> (P2300)	Asynchronous execution on generic execution resources
Filesystem TS
<experimental/filesystem> (filesystem TS)	Filesystem library
Parallelism TS
<experimental/algorithm> (parallelism TS)	Non-numeric parallel algorithms
<experimental/execution_policy> (parallelism TS)	Execution policies
<experimental/exception_list> (parallelism TS)	Parallel exceptions
<experimental/numeric> (parallelism TS)	Numeric parallel algorithms
Library Fundamentals TS
<experimental/algorithm> (library fundamentals TS)	sample and search
<experimental/any> (library fundamentals TS)	any
<experimental/chrono> (library fundamentals TS)	Variable templates for type traits
<experimental/deque> (library fundamentals TS)	Convenience aliases for containers using polymorphic allocators
<experimental/forward_list> (library fundamentals TS)	Convenience aliases for containers using polymorphic allocators
<experimental/future> (library fundamentals TS)	promise and packaged_task using polymorphic allocators
<experimental/list> (library fundamentals TS)	Convenience aliases for containers using polymorphic allocators
<experimental/functional> (library fundamentals TS)	function using polymorphic allocators and searchers
<experimental/map> (library fundamentals TS)	Convenience aliases for containers using polymorphic allocators
<experimental/memory> (library fundamentals TS)	shared_ptr and weak_ptr with array support
<experimental/memory_resource> (library fundamentals TS)	Polymorphic allocators and memory resources
<experimental/optional> (library fundamentals TS)	optional
<experimental/ratio> (library fundamentals TS)	Variable templates for type traits
<experimental/regex> (library fundamentals TS)	Convenience aliases for containers using polymorphic allocators
<experimental/set> (library fundamentals TS)	Convenience aliases for containers using polymorphic allocators
<experimental/string> (library fundamentals TS)	Convenience aliases for containers using polymorphic allocators
<experimental/string_view> (library fundamentals TS)	basic_string_view
<experimental/system_error> (library fundamentals TS)	Variable templates for type traits
<experimental/tuple> (library fundamentals TS)	Variable templates for type traits and apply
<experimental/type_traits> (library fundamentals TS)	Variable templates for type traits and invocation_type
<experimental/unordered_map> (library fundamentals TS)	Convenience aliases for containers using polymorphic allocators
<experimental/unordered_set> (library fundamentals TS)	Convenience aliases for containers using polymorphic allocators
<experimental/utility> (library fundamentals TS)	erased_type
<experimental/vector> (library fundamentals TS)	Convenience aliases for containers using polymorphic allocators
Concurrency TS
<experimental/atomic> (concurrency TS)	atomic_shared_ptr and atomic_weak_ptr
<experimental/barrier> (concurrency TS)	barrier and flex_barrier
<experimental/future> (concurrency TS)	Extensions for std::future
<experimental/latch> (concurrency TS)	latch
Library Fundamentals TS v2
<experimental/algorithm> (library fundamentals TS v2)	sample and shuffle
<experimental/array> (library fundamentals TS v2)	make_array and to_array
<experimental/deque> (library fundamentals TS v2)	erase and erase_if
<experimental/forward_list> (library fundamentals TS v2)	erase and erase_if
<experimental/functional> (library fundamentals TS v2)	not_fn
<experimental/iterator> (library fundamentals TS v2)	ostream_joiner
<experimental/list> (library fundamentals TS v2)	erase and erase_if
<experimental/map> (library fundamentals TS v2)	erase_if and erase_if
<experimental/memory> (library fundamentals TS v2)	observer_ptr
<experimental/numeric> (library fundamentals TS v2)	gcd and lcm
<experimental/propagate_const> (library fundamentals TS v2)	propagate_const
<experimental/random> (library fundamentals TS v2)	randint and reseed
<experimental/set> (library fundamentals TS v2)	erase_if and erase_if
<experimental/source_location> (library fundamentals TS v2)	source_location
<experimental/string> (library fundamentals TS v2)	erase and erase_if
<experimental/type_traits> (library fundamentals TS v2)	Metafunctions and detection idiom
<experimental/unordered_map> (library fundamentals TS v2)	erase_if and erase_if
<experimental/unordered_set> (library fundamentals TS v2)	erase_if and erase_if
<experimental/vector> (library fundamentals TS v2)	erase and erase_if
Ranges TS
<experimental/ranges/algorithm> (ranges TS)	Algorithms library
<experimental/ranges/concepts> (ranges TS)	Concepts library
<experimental/ranges/functional> (ranges TS)	Function objects
<experimental/ranges/iterator> (ranges TS)	Iterators library
<experimental/ranges/random> (ranges TS)	UniformRandomNumberGenerator concept
<experimental/ranges/range> (ranges TS)	Ranges library
<experimental/ranges/tuple> (ranges TS)	Tagged tuples
<experimental/ranges/type_traits> (ranges TS)	Metaprogramming and type traits
<experimental/ranges/utility> (ranges TS)	Utility components
Networking TS
<experimental/buffer> (networking TS)	Buffers
<experimental/executor> (networking TS)	Asynchronous model
<experimental/internet> (networking TS)	Internet protocol
<experimental/io_context> (networking TS)	Basic I/O services
<experimental/net> (networking TS)	Convenience header that includes every other Networking TS header
<experimental/netfwd> (networking TS)	Contains forward declarations of major Networking TS components
<experimental/socket> (networking TS)	Sockets
<experimental/timer> (networking TS)	Timers
Parallelism TS v2
<experimental/algorithm> (parallelism TS v2)	Non-numeric parallel algorithms
<experimental/execution_policy> (parallelism TS v2)	unseq and vec policies
<experimental/simd> (parallelism TS v2)	Data-parallel types
<experimental/task_block> (parallelism TS v2)	Task block
Reflection TS
<experimental/reflect> (reflection TS)	Static reflection support library
Library Fundamentals TS v3
<experimental/scope> (library fundamentals TS v3)	scope_exit, scope_fail, scope_success and unique_resource