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From: Eric Niebler (eric_at_[hidden])
Date: 2008-02-01 10:45:45

Hansi Hansi wrote:
> I have looked another time to the implementation of the histogram. If
> we want to implement it in the same class density, than it is needed
> to provide default parameter for density_cache_size or min/max. Is it
> possible to ensure that either density_cache_size or min/max is
> provided as parameter? Sorry for the question but I'm not so familiar
> with parameters...

Yes, it's possible. IIRC, a parameter pack is a valid MPL sequence, so
you can us MPL algorithms to detect the presence or absence of any

Eric Niebler
Boost Consulting

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