Re: [boost] A design for geometric objects

Subject: Re: [boost] A design for geometric objects
From: Bruno Lalande (bruno.lalande_at_[hidden])
Date: 2008-11-15 03:36:18

Hello,

>>Unless I missed something, you can use the Boost.TypeTraits's is_same
>>in conjunction with enable_if instead of your SFINAE_is_same_type.
>
> The thing you are missing is the rather unfortunate circumstance I find myself in where two of my primary groups of users refuse to allow any boost dependency in their core libraries.  Apparently, boost has a reputation for making the life of the build environment manager a pain.

Integrating Boost inside our build system in my company is absolutely
not more a pain than for any other third-party library (I'd even say
less than for some of them). And anyway, a good compromise would be at
least to accept header-only parts of Boost...

> mutable_ellipse_traits is not specialized for circle when ellipse traits is, and is_ellipse_concept would need a complementing is_mutable_ellipse_concept to complete this pattern.  We might specialize mutable_circle_traits for elipse because we can write circle data to an ellipse.

Yes indeed, this is the part that was missing to really handle the
circle-ellipse problem. The design sounds good to me like that...

Bruno