-----Original Message----- From: boost-bounces@lists.boost.org [mailto:boost-bounces@lists.boost.org] On Behalf Of Matthias Troyer Sent: Saturday, August 19, 2006 1:55 AM To: boost@lists.boost.org Subject: Re: [boost] Boost Units library preview
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If I understand the above concepts correctly then we only need three terms:
- named unit - unnamed unit - quantity (value + unit)
I try to keep the definitions as simple as possible. IMHO, there are really only four distinct concepts: dimension - an "abstract" type quantity - an "abstract" object whose "type" is a dimension unit - a type "derived" from a particular dimension measure - an arithmetic object whose "type" is a unit The last term is a term I introduced to distinguish an object with a dimension from an object with a unit. Very important distinction. Eric.