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From: "Martin Dowie" <martin.dowie@nospam.baesystems.com>
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Subject: Re: Announce: Grace project site operational
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"Hyman Rosen" <hyrosen@mail.com> wrote in message
news:3CE15D0A.3050100@mail.com...
[snip]
> I first saw this idiom in _Scientific and Engineering C++_
> by Bartion & Nackman.
>
> template<typename RepType, int Mass, int Distance, int Time>
> struct Unit
> {
> RepType value;
> explicit Unit(value) : value(value) { }
> Unit operator+(Unit other)
> { return Unit(value + other.value); }
> Unit operator-(Unit other)
> { return Unit(value - other.value); }
> };
[snip]

Didn't someone post an Ada units package similar to
this a while back (> 1 year)?..