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#  Experimental C++ Features

From cppreference.com

< [ cpp ](/w/cpp "cpp")

[ C++ ](/w/cpp "cpp")

[ Compiler support ](/w/cpp/compiler_support "cpp/compiler support")  
---  
[ Freestanding and hosted ](/w/cpp/freestanding "cpp/freestanding")  
[ Language ](/w/cpp/language "cpp/language")  
[ Standard library ](/w/cpp/standard_library "cpp/standard library")  
[ Standard library headers ](/w/cpp/header "cpp/header")  
[ Named requirements ](/w/cpp/named_req "cpp/named req")  
[ Feature test macros ](/w/cpp/feature_test "cpp/feature test") (C++20)  
[ Language support library ](/w/cpp/utility#Language_support "cpp/utility")  
[ Concepts library ](/w/cpp/concepts "cpp/concepts") (C++20)  
[ Metaprogramming library ](/w/cpp/meta "cpp/meta") (C++11)  
[ Diagnostics library ](/w/cpp/error "cpp/error")  
[ General utilities library ](/w/cpp/utility "cpp/utility")  
[ Strings library ](/w/cpp/string "cpp/string")  
[ Containers library ](/w/cpp/container "cpp/container")  
[ Iterators library ](/w/cpp/iterator "cpp/iterator")  
[ Ranges library ](/w/cpp/ranges "cpp/ranges") (C++20)  
[ Algorithms library ](/w/cpp/algorithm "cpp/algorithm")  
[ Numerics library ](/w/cpp/numeric "cpp/numeric")  
[ Localizations library ](/w/cpp/locale "cpp/locale")  
[ Input/output library ](/w/cpp/io "cpp/io")  
[ Filesystem library ](/w/cpp/filesystem "cpp/filesystem") (C++17)  
[ Regular expressions library ](/w/cpp/regex "cpp/regex") (C++11)  
[ Concurrency support library ](/w/cpp/thread "cpp/thread") (C++11)  
**Technical specifications**  
[ Symbols index ](/w/cpp/symbol_index "cpp/symbol index")  
[ External libraries ](/w/cpp/links/libs "cpp/links/libs")  
  
[ [edit]
](https://en.cppreference.com/mwiki/index.php?title=Template:cpp/navbar_content&action=edit)

**Experimental**

[ Technical Specification ](/w/cpp/experimental#Technical_Specification
"cpp/experimental")  
---  
[ Filesystem library ](/w/cpp/experimental/fs "cpp/experimental/fs")
(filesystem TS)  
[ Library fundamentals ](/w/cpp/experimental/lib_extensions
"cpp/experimental/lib extensions") (library fundamentals TS)  
[ Library fundamentals 2 ](/w/cpp/experimental/lib_extensions_2
"cpp/experimental/lib extensions 2") (library fundamentals TS v2)  
[ Library fundamentals 3 ](/w/cpp/experimental/lib_extensions_3
"cpp/experimental/lib extensions 3") (library fundamentals TS v3)  
[ Extensions for parallelism ](/w/cpp/experimental/parallelism
"cpp/experimental/parallelism") (parallelism TS)  
[ Extensions for parallelism 2 ](/w/cpp/experimental/parallelism_2
"cpp/experimental/parallelism 2") (parallelism TS v2)  
[ Extensions for concurrency ](/w/cpp/experimental/concurrency
"cpp/experimental/concurrency") (concurrency TS)  
[ Extensions for concurrency 2
](/mwiki/index.php?title=cpp/experimental/concurrency_2&action=edit&redlink=1
"cpp/experimental/concurrency 2 \(page does not exist\)") (concurrency TS v2)  
[ Concepts ](/w/cpp/experimental/constraints "cpp/experimental/constraints")
(concepts TS)  
[ Ranges ](/w/cpp/experimental/ranges "cpp/experimental/ranges") (ranges TS)  
[ Reflection ](/w/cpp/experimental/reflect "cpp/experimental/reflect")
(reflection TS)  
[ Mathematical special functions ](/w/cpp/experimental/special_functions
"cpp/experimental/special funct