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From: Martin <martin.dowie@btopenworld.com>
Newsgroups: comp.lang.ada
Subject: SI Units - has Ada missed the boat?
Date: Sun, 08 Jul 2007 08:13:39 -0700
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Date: 2007-07-08T08:13:39-07:00
List-Id: <comp.lang.ada>

One of my pet hopes for Ada2005 was that it would include some method
of automatically checking systems of units at compilation time or with
minimal run-time checking. Alas it was voted down due to time
pressures and technical issues (see http://www.ada-auth.org/ai-files/minutes/min-0403.html#AI324
and http://www.ada-auth.org/cgi-bin/cvsweb.cgi/AIs/AI-00324.TXT?rev=1.3).

C++ now has the Boost library (see http://svn.boost.org/trac/boost/browser/sandbox/units)
with zero-runtime cost (or at least when optimisation is switched on).

And now Java has a proposal for a similar beast (see
https://jsr-275.dev.java.net/files/documents/4333/34956/jsr-275.pdf).

I've been playing around with the C++ Boost library and it seems quite
good - at least for the sort of things I would use it for (embedded
avionics).

Is anyone still working on an Ada solution to this?

Cheers
-- Martin