Re: [Boost-users] Bug in enable_if?

From: Germán Diago (germandiago_at_[hidden])
Date: 2008-05-06 16:45:09

2008/5/6 Daniel Krügler <dsp_at_[hidden]>:

> Daniel Krügler wrote:
> > Germán Diago Gómez wrote:
> >
> > SFINAE causes a *silent* failure during an *attempt* to instantiate
> > a template. The only template here is tuple_for_each_helper which
> > was already instantiated, before the actual failure could take
> > place.
>
> Usage of bad language on my side: SFINAE's power occurs during the
> attempt of template argument substituition. Failing substitution
> leads to failing argument deduction and this again prevents template
> successful instantiation.
>
> Greetings from Bremen,
>
> Daniel Krügler
>
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  Thanks all for the great response!! I'll try David Abraham's solution.