Re: [boost] [config] Using SD-6 macros

Subject: Re: [boost] [config] Using SD-6 macros
From: Rob Stewart (rob.stewart_at_[hidden])
Date: 2015-06-13 07:13:26

On June 12, 2015 10:26:49 PM EDT, Edward Diener <eldiener_at_[hidden]> wrote:
> On 6/12/2015 1:05 PM, Peter Dimov wrote:
> > Edward Diener wrote:
> >
> > It seems to me that there's no macro for SD-6 itself though. When
> > __cpp_something is not defined, you don't know whether this is
> because
> > 'something' is not implemented or because SD-6 is not implemented.
> 
> What difference could it possibly make ? You test if a macro is
> defined 
> and if it is not you try something else. If it is you have your
> answer.

If the absence of an SD-6 macro implies a feature is not implemented, then the absence of SD-6 support indicates nothing is implemented when that's the mechanism used for discovery of features.

___
Rob

(Sent from my portable computation engine)