On Mon, Oct 20, 2008 at 7:19 PM, Peng Yu <[EMAIL PROTECTED]> wrote:
> Could you please help explain what the difference between typeof and
> decltype are? What are c++0x/g++0x modes?

Well decltype is part of the C++0x standard
(http://gcc.gnu.org/projects/cxx0x.html,
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2343.pdf ).
typedef is a GCC extension.

Thanks,
Andrew Pinski

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