std::experimental:: get_underlying

From cppreference.net

template < class T > constexpr T & get_underlying ( propagate_const < T > & pt ) noexcept ;		(Bibliotheksgrundlagen TS v2)
template < class T > constexpr const T & get_underlying ( const propagate_const < T > & pt ) noexcept ;		(Bibliotheksgrundlagen TS v2)

Ruft eine Referenz auf das zeigerähnliche Objekt ab, das in einem propagate_const gespeichert ist.

pt - ein propagate_const Objekt

Eine Referenz auf das zeigerähnliche Objekt, gespeichert in pt .

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)
Diagnostics library
Memory management library
Metaprogramming library (C++11)
General utilities library
Containers library
Iterators library
Ranges library (C++20)
Algorithms library
Strings library
Text processing library
Numerics library
Date and time library
Input/output library
Filesystem library (C++17)
Concurrency support library (C++11)
Execution control library (C++26)
Technical specifications
Symbols index
External libraries

Technical Specification
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)
Experimental Non-TS
Pattern Matching
Linear Algebra
std::execution
Contracts
2D Graphics

experimental::propagate_const
experimental::not_fn
experimental::observer_ptr
experimental::make_array
experimental::to_array
experimental::ostream_joiner
experimental::gcd
experimental::lcm
experimental::source_location
experimental::randint
detection idiom
uniform container erasure
logical operator type traits

Member functions
propagate_const::propagate_const
propagate_const::operator=
propagate_const::swap
Observers
propagate_const::get
propagate_const::operator bool
propagate_const::operator* propagate_const::operator->
propagate_const::operator element_type* propagate_const::operator const element_type*
Non-member functions
operator== operator!= operator< operator> operator<= operator> operator>=
swap
get_underlying
Helper classes
std::hash
std::equal_to std::not_equal_to std::less std::greater std::less_equal std::greater_equal