Re: [boost] Is there interest in a library for testing existence of a function member of class?

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To: boost@lists.boost.org Date: Sat, 22 Nov 2014 17:58:09 +0000 From: spam_from_boost_dev@chezphil.org Subject: Re: [boost] Is there interest in a library for testing existence of a function member of class?

TONGARI J wrote:

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2014-11-22 17:36 GMT+08:00 ?? :

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Hi, I am looking for how to test if a function member of class exist or not in compile time.I did not find a solution by google so I wrote a piece of code for it.Please let me know if it's already in boost. :)

Yes, it's in Boost.TTI: http://tinyurl.com/k3y5x8l

Has anyone ever worked out how to do this without having to specify the type? E.g. with BOOST_TTI_HAS_MEMBER_DATA I need to write something like

has_member_data_fieldname::value;

The most recent time I needed something like this, I wanted to test whether a struct contained a field with a particular name that was convertible to a float (I think float or int16_t in that case). I would have been happy with a test for a field with that name of any type. But I couldn't work out how to do it. Any ideas?

Regards, Phil.

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