C++14

C++14 is a minor version after the major version C++11, featuring mainly minor improvements and defect fixes. Its approval was announced on August 18, 2014. It was released on December 15, 2014.

Before its approval, C++1y is sometimes used to indicate its release in 2010s.

New language features

• variable templates
• generic lambdas
• lambda init-capture
• new/delete elision
• relaxed restrictions on constexpr functions
• binary literals
• digit separators
• return type deduction for functions
• aggregate classes with default non-static member initializers.

New library features

• std::make_unique
• std::shared_timed_mutex and std::shared_lock
• std::integer_sequence
• std::exchange
• std::quoted
• and many small improvements to existing library facilities, such as
  • two-range overloads for some algorithms
  • type alias versions of type traits
  • user-defined literals for basic_string, duration and complex
  • etc.

Defect reports

Compiler support

Main Article: C++14 compiler support.

C++14 core language features

C++14 feature	Paper(s)	GCC	Clang	MSVC	Apple Clang	EDG eccp	Intel C++	IBM XLC++	Sun/Oracle C++	Embarcadero C++ Builder	Cray	Nvidia HPC C++ (ex Portland Group/PGI)	Nvidia nvcc
Tweaked wording for contextual conversions	N3323	4.9	3.4	18.0*	Yes	4.9	16.0	13.1.2*	5.15	10.3	8.6	16.1	9.0
Binary literals	N3472	4.3 (GNU) 4.9	2.9	19.0 (2015)*	Yes	4.10	11.0	13.1.2*	5.14	10.3	8.6	2015	9.0
decltype(auto), Return type deduction for normal functions	N3638	4.8 (partial)* 4.9	3.3 (partial)* 3.4	19.0 (2015)*	Yes	4.9	15.0	13.1.2*	5.15	10.3	8.6	16.1	9.0
Initialized/Generalized lambda captures (init-capture)	N3648	4.5 (partial) 4.9	3.4	19.0 (2015)*	Yes	4.10	15.0	16.1.1*	5.15	10.3	8.6	16.1	9.0
Generic lambda expressions	N3649	4.9	3.4	19.0 (2015)*	Yes	4.10	16.0	13.1.2*	5.15	10.3	8.6	16.1	9.0
Variable templates	N3651	5	3.4	19.0 (Update 2)*	Yes	4.11	17.0	13.1.2*	5.15	10.3	8.6	17.4	9.0
Extended constexpr	N3652	5	3.4	19.10*	Yes	4.11	17.0	13.1.2*	5.15	10.3	8.6	17.4	9.0
Aggregates with default member initializers	N3653	5	3.3	19.10*	Yes	4.9	16.0	16.1.1*	5.14	10.3	8.6	16.1	9.0
Omitting/extending memory allocations	N3664	N/A	3.4	N/A	Yes	N/A	N/A	N/A	N/A	10.3	8.6	17.4	N/A
[[deprecated]] attribute	N3760	4.9	3.4	19.0 (2015)*	Yes	4.9	15.0* 16.0	13.1.2*	5.14	10.3	8.6	16.1	9.0
Sized deallocation	N3778	5	3.4	19.0 (2015)*	Yes	4.10.1	17.0	16.1.1*	5.14	10.3	8.6	16.1
Single quote as digit separator	N3781	4.9	3.4	19.0 (2015)*	Yes	4.10	16.0	13.1.2*	5.14	10.3	8.6	2015	9.0
C++14 feature	Paper(s)	GCC	Clang	MSVC	Apple Clang	EDG eccp	Intel C++	IBM XLC++	Sun/Oracle C++	Embarcadero C++ Builder	Cray	Nvidia HPC C++ (ex Portland Group/PGI)	Nvidia nvcc

C++14 library features

C++14 feature	Paper(s)	GCC libstdc++	Clang libc++	MSVC STL	Apple Clang	Sun/Oracle C++ Standard Library	Embarcadero C++ Builder Standard Library
constexpr for <complex>	N3302	5	3.4	19.0 (2015)*	Yes	5.15	10.3
Transparent operator functors	N3421	4.9	3.4	18.0*	Yes	5.15	10.3
std::result_of and SFINAE	N3462	5	Yes	19.0 (Update 2)*	Yes	5.15	10.3
constexpr for <chrono>	N3469	5	3.4	19.0 (2015)*	Yes	5.15	10.3
constexpr for <array>	N3470	5	3.4	19.0 (2015)*	Yes	5.15	10.3
constexpr for <initializer_list>, <utility> and <tuple>	N3471	5	3.4	19.0 (2015)*	Yes	5.15	10.3
Improved std::integral_constant	N3545	5	3.4	19.0 (2015)*	Yes	5.15	10.3
User-defined literals for <chrono> and <string>	N3642	5	3.4	19.0 (2015)*	Yes	5.15	10.3
Null forward iterators	N3644	5 (partial) 10	3.4	19.0 (2015)*	Yes	5.15	10.3
std::quoted	N3654	5	3.4	19.0 (2015)*	Yes	5.15	10.3
std::make_unique	N3656	4.9	3.4	18.0*	Yes	5.15	10.3
Heterogeneous associative lookup	N3657	5	3.4	19.0 (2015)*	Yes	5.15	10.3
std::integer_sequence	N3658	5	3.4	19.0 (2015)*	Yes	5.15	10.3
std::shared_timed_mutex	N3659	5	3.4	19.0 (2015)*	Yes	5.15	10.3
std::exchange	N3668	5	3.4	19.0 (2015)*	Yes	5.15	10.3
fixing constexpr member functions without const	N3669	5	3.4	19.0 (2015)*	Yes	5.15	10.3
std::get<T>()	N3670	5	3.4	19.0 (2015)*	Yes	5.15	10.3
Dual-Range std::equal, std::is_permutation, std::mismatch	N3671	5	3.4	19.0 (2015)*	Yes	5.15	10.3
C++14 feature	Paper(s)	GCC libstdc++	Clang libc++	MSVC STL	Apple Clang	Sun/Oracle C++ Standard Library	Embarcadero C++ Builder Standard Library

* - hover over a cell marked with the star * to see additional pop-up notes.
DRnn - the number nn after "DR" denotes target C++ revision the Defect Report is applied to, e.g., DR20 → C++20.

External links

Working C++14 examples