Editing C++ Standard Library (section)

===General===
Components that C++ programs may use for increased features.
{| class="wikitable"
! Name !! Description  
|-
| {{code|<any>}}
|| Added in [[C++17]]. Provides a type-erased class <code>std::any</code>.
|-
| {{code|<atomic>}}
|| Added in [[C++11]]. Provides class template <code>std::atomic</code>, its several template specializations, and more atomic operations.
|-
| {{code|<chrono>}}
|| Provides time elements, such as <code>std::chrono::duration</code>, <code>std::chrono::time_point</code>, and clocks. Since [[C++20]], a hefty amount of temporal features were added: calendars, time zones, more clocks, and string chrono formatting.
|-
| {{code|<concepts>}}
|| Added in [[C++20]]. Provides fundamental library [[Concepts (C++)|concepts]]. 
|-
| {{code|<expected>}}
|| Added in [[C++23]]. Provides class template <code>std::expected</code>, a [[result type]].
|-
| {{code|<functional>}}
|| Provides several [[function object]]s, designed for use with the standard algorithms.
|-
| {{code|<generator>}}
|| Added in [[C++23]]. Provides a [[Generator (computer programming)|coroutine generator]] that additionally supports nested yield operations on ranges.
|-
| {{code|<memory>}}
|| Provides facilities for [[memory management]] in C++, including the class template <code>std::unique_ptr</code>.
|-
| {{code|<memory_resource>}}
|| Added in [[C++17]]. Provides facilities for creating polymorphic memory allocators whose behaviors can change at runtime.<ref>{{Cite web|last=Filipek|first=Bartlomiej|title=Polymorphic Allocators, std::vector Growth and Hacking|url=https://www.bfilipek.com/2020/06/pmr-hacking.html|access-date=2021-04-30|language=en}}</ref>
|-
| {{code|<optional>}}
|| Added in [[C++17]]. Provides class template <code>std::optional</code>, an [[Option type|optional type]].
|-
| {{code|<scoped_allocator>}}
|| Added in [[C++11]]. Provides <code>std::scoped_allocator_adaptor</code>.
|-
| {{code|<stacktrace>}}
|| Added in [[C++23]]. Provides [[stack trace]] operations.
|-
| {{code|<stdexcept>}}
|| Contains standard exception classes such as <code>std::logic_error</code> and <code>std::runtime_error</code>, both derived from <code>std::exception</code>.
|-
| {{code|<system_error>}}
|| Added in [[C++11]]. Defines <code>std::error_code</code>
|-
| {{code|<tuple>}}
|| Added in [[C++11]] and TR1. Provides a class template <code>std::tuple</code>, a [[tuple]].
|-
| {{code|<type_traits>}}
|| Added in [[C++11]]. Provides metaprogramming facilities working with types.
|-
| {{code|<utility>}}
|| The [[Utility (C++)|utility file]] provides various utilities: class template <code>std::pair</code> (two-member [[tuple]]s), compile-time integer sequences, helpers in constructing vocabulary types, functions such as <code>std::move</code> and <code>std::forward</code>, and many more. The namespace <code>std::rel_ops</code> for automatically generating comparison operators is deprecated in [[C++20]] in favor of new defaulted comparison operators.
|-
| {{code|<variant>}}
|| Added in [[C++17]]. Provides a class template <code>std::variant</code>, a [[Tagged union|tagged union type]].
|}