C++ standard libraries extensions, version 3
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C++
Feature test macros (C++20)
Concepts library (C++20)
Metaprogramming library (C++11)
Ranges library (C++20)
Filesystem library (C++17)
Concurrency support library (C++11)
Execution control library (C++26)
Experimental
Filesystem library (filesystem TS)
Library fundamentals (library fundamentals TS)
Library fundamentals 2 (library fundamentals TS v2)
Library fundamentals 3 (library fundamentals TS v3)
Extensions for parallelism (parallelism TS)
Extensions for parallelism 2 (parallelism TS v2)
Extensions for concurrency (concurrency TS)
Extensions for concurrency 2 (concurrency TS v2)
Concepts (concepts TS)
Ranges (ranges TS)
Reflection (reflection TS)
Mathematical special functions (special functions TR)
Library fundamentals v3
Version 3 of the C++ Extensions for Library Fundamentals, ISO/IEC TS 19568:2024, defines the following new components for the C++ standard library, in addition to those defined in version 1 and version 2.
Components merged into C++17/20 and the following components are removed in LFTS v3:
- std::experimental::make_array ,
- std::experimental::erased_type ,
- std::experimental::packaged_task, and
- std::experimental::promise.
[edit] Scope guard
Defined in header
<experimental/scope>
wraps a function object and invokes it on exiting the scope through an exception
(class template) [edit]
(class template) [edit]
[edit] Feature test macros
Defined in header
<experimental/memory_resource> __cpp_lib_experimental_memory_resources
(macro constant)
Defined in header
<experimental/functional> __cpp_lib_experimental_function_polymorphic_allocator
(macro constant)
Defined in header
<experimental/scope> __cpp_lib_experimental_scope
(macro constant)
[edit] Notes
The value of __cpp_lib_experimental_memory_resources has been increased in LFTS v3, because the design of resource_adaptor is rebased onto std::pmr::memory_resource .