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Subject: Re: [boost] [result_of] Allow result_of to work with C++11 lambdas
From: Nathan Crookston (nathan.crookston_at_[hidden])
Date: 2013-04-12 01:50:13

Daniel Walker wrote:

> Vicente J. Botet Escriba wrote:
> > Do you mean that if a library author develops and tests with both
> compilers an even more at once he would need to define
> BOOST_RESULT_OF_USE_TR1 from the beginning even if defining
> BOOST_RESULT_OF_USE_DECTYPE works better on some compilers? But the library
> author cannot know how the users would define their Functors so it can not
> define these macros.
> >
> > I think that I need to re-read the result_of documentation to understand
> correctly what is proposed.
> I had thought of this proposal as a third configuration. So, our
> established migration path from using TR1 by default to using decltype by
> default would remain, but we would add a third option: a hybrid that could
> switch between TR1 mode and decltype mode smartly.
> Agreed. Hopefully I didn't take the discussion too far afield. The
proposal is what you describe, and I believe the main impetus to accept it
is so C++11 lambdas can be used in result_of expressions on compilers which
have lacking lambdas.


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