rvalue references in Visual Studio 2010

Question

What are the differences between rvalue references as implemented in Visual Studio 2010 and as specified in the C++11? Are there any particular pitfalls to watch out for when using revalue references in Visual Studio 2010 that could make source invalid or working differently if compiled by C++11 conforming compiler?

Answer 1

According to this table, VS2010 supports rvalue references version 2.0 (the current version is 2.1 IIRC).

The important difference between 2.0 and 2.1 is that the latter allows implicit conversions:

std::string&& x = "hello";   // legal in 2.1, illegal in 2.0

Also note that VS2010 does not yet support overloading on the rvalueness of *this.

void Foo::foo() && { ... }   // not yet supported in VS2010

Answer 2

Check the instalment number 9 of Stephan T. Lavavej's video lectures at Channel 9 from 42:30 min onwards. He explains timeline and evolution of the rvalue references and move semantic in Visual Studio.

Here it is: C9 Lectures: Stephan T. Lavavej - Standard Template Library (STL), 9 of n