Rank your favorite new C++11 language features

The ISO C++ 2011 (C++11) language standard was completed last year on August 12, 2011. This short survey asks C++ developers to rank their favorite (using whatever determining factors you want) new C++11 language features.

I hope you will take a couple of minutes to participate in the fun. I will post a blog with the results when the survey period ends.

Thank you in advance for your participation,

David Intersimone "David I"
Vice President of Developer Relations and Chief Evangelist
Embarcadero Technologies
davidi@embarcadero.com

Question Title

* 1. Use the list below to rank order your favorite new C++11 language features.

Rvalue references

Rvalue references for *this

Initialization of class objects by rvalues

Non-static data member initializers

Variadic templates

Extending variadic template template parameters

Initializer lists

Static assertions

auto-typed variables

Multi-declarator auto

Removal of auto as a storage-class specifier

New function declarator syntax

Lambda expressions

Declared type of an expression

Incomplete return types

Right angle brackets

Default template arguments for function templates

Solving the SFINAE problem for expressions

Alias templates

Extern templates

Null pointer constant

Strongly-typed enums

Forward declarations for enums

Generalized attributes

Generalized constant expressions

Alignment support

Delegating constructors

Explicit conversion operators

New character types

Unicode string literals

Raw string literals

Universal character names in literals

User-defined literals

Standard Layout Types

Defaulted functions

Deleted functions

Extended friend declarations

Extending sizeof

Inline namespaces

Unrestricted unions

Local and unnamed types as template arguments

Range-based for

Explicit virtual overrides

Minimal support for garbage collection and reachability-based leak detection

Allowing move constructors to throw [noexcept]

Defining move special member functions

Concepts [not part of C++11]

Sequence points

Atomic operations

Strong Compare and Exchange

Bidirectional Fences

Memory model

Data-dependency ordering: atomics and memory model

Propagating exceptions

Abandoning a process and at_quick_exit

Allow atomics use in signal handlers

Thread local storage

Dynamic initialization and destruction with concurrency

__func__ predefined identifier

C99 preprocessor

long long

Extended integral types