C++26 - Misplaced Pages

Computer programming language

This article needs to be updated. Please help update this article to reflect recent events or newly available information. (May 2024)

C++ language revisions
C++98 C++03 C++11 C++14 C++17 C++20 C++23 C++26
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C++26 is the informal name for the version of the International Organization for Standardization (ISO) and International Electrotechnical Commission (IEC) 14882 standard for the C++ programming language that follows C++23. The current working draft of this version is N4981.

Features

Changes that have been accepted into C++26 include:

Unevaluated strings
Adding @, $, and ` to the basic character set
constexpr cast from void*
User-generated static_assert messages
Placeholder variables with no name
Pack indexing
Attributes for structured bindings
Erroneous behavior for uninitialized reads
= delete("reason");
Variadic friends
constexpr placement new
Structured binding declaration as a condition
Ordering of constraints involving fold expressions
Deleting a pointer to an incomplete type should be ill-formed
Structured bindings can introduce a pack
Allowing exception throwing in constant-evaluation
constexpr structured bindings and references to constexpr variables
Oxford variadic comma, i.e. "Deprecate ellipsis parameters without a preceding comma. The syntax (int...) is incompatible with C, detrimental to C++, and easily replaceable with (int, ...)."
Removing deprecated array comparisons

Hashing support for std::chrono value classes
std::is_within_lifetime
Native handles in file streams
Interfacing string streams with std::string_view
Interfacing std::bitset with std::string_view
More constexpr for <cmath> and <complex>
Adding the new 2022 SI prefixes on ratios: std::quecto, std::ronto, std::ronna, and std::quetta
std::copyable_function
std::submdspan()
<debugging>: Debugging Support
<linalg>: A free function linear algebra interface based on the BLAS
Added tuple protocol to std::complex
views::concat
Concatenation of strings and string views
std::ranges::generate_random
Printing blank lines with std::println()
std::formatter<std::filesystem::path>
Saturation arithmetic with, among others, std::add_sat, std::div_sat

"Working Draft, Standard for Programming Language C++" (PDF). Open Standards. ISO/IEC. 2024-04-16.
"P3176R1: The Oxford variadic comma". eisenwave.github.io. Retrieved 2024-12-09.

v t e C++
C++ Outline C++98 C++03 C++11 C++14 C++17 C++20 C++23 C++26 Libraries
Features	Classes Concepts Copy constructor Exception handling (Exception safety) Function overloading Move semantics new and delete Operator overloading Operators References Templates Virtual functions
Standard Library	I/O Streams Smart pointers STL Strings
Ideas	As-if rule Barton–Nackman trick Curiously recurring template pattern Most vexing parse One Definition Rule Resource acquisition is initialization Rule of three Slicing Special member functions Substitution failure is not an error Template metaprogramming
Compilers	Comparison of C++ compilers Borland C++ Borland Turbo C++ C++Builder Clang GCC Intel C++ Compiler Oracle Solaris Studio Visual C++ (MSVC) Watcom C/C++
IDEs	Comparison of C IDEs Anjuta CLion Code::Blocks CodeLite Dev-C++ Eclipse Geany NetBeans KDevelop Qt Creator Visual Studio
Superset languages	Objective-C++ C++/CLI C++/CX C++/WinRT Ch SYCL
Dialects	Embedded C++
Relative to other languages	Comparison of programming languages Comparison of Java and C++ Comparison of ALGOL 68 and C++ Compatibility of C and C++ Criticism of C++
Designer	Bjarne Stroustrup
Category