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Reply-To: <steven@caswell.name>
From: "Steven Caswell" <steven@caswell.name>
To: "'Jakarta Commons Developers List'" <commons-dev@jakarta.apache.org>
Subject: RE: [lang] Money/Units/Quantities [was Re: Conversion utilities]
Date: Thu, 14 Nov 2002 18:07:33 -0500
Message-ID: <002301c28c32$9d34eca0$7b00a8c0@YellowJacket>
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I have a Money class that I can contribute to get the ball rolling.


Steven Caswell
steven@caswell.name
a.k.a Mungo Knotwise of Michel Delving
"One ring to rule them all, one ring to find them..."


> -----Original Message-----
> From: Stephen Colebourne [mailto:scolebourne@btopenworld.com] 
> Sent: Thursday, November 14, 2002 4:29 PM
> To: Jakarta Commons Developers List
> Subject: [lang] Money/Units/Quantities [was Re: Conversion utilities]
> 
> 
> http://www.dautelle.com/jade is the most well known units and 
> quantities package. It also follows the JSR on the subject. 
> In some ways, it would be nice to see this work brought under 
> the Jakarta Commons group, as there is much useful code there.
> 
> Even if we don't intend to have a whole units package in 
> [lang], we should probably have Money and Currency classes. 
> They are pretty fundamental to many business applications. (I 
> don't think that a [money] is required here
> ??)
> 
> Stephen
> 
> ----- Original Message -----
> From: "Henri Yandell" <bayard@generationjava.com>
> To: "Jakarta Commons Developers List" <commons-dev@jakarta.apache.org>
> Cc: <yan@studylink.com>
> Sent: Thursday, November 14, 2002 7:54 PM
> Subject: Re: Conversion utilities
> 
> 
> >
> >
> > On Thu, 14 Nov 2002, Jeff Varszegi wrote:
> >
> > > Janek,
> > >
> > > I made an interface called Range that is supported by 
> classes called 
> > > ComparableRange etc.  The ComparableRange class can use 
> any objects 
> > > that support Comparable (or, alternately, any objects with a 
> > > supplied Comparator), and I also made specific versions 
> for Date and 
> > > Double to
> >
> > +1. Why did no one think of this before? We're all fined one weeks 
> > +pay.
> >
> > > eliminate unnecessary casting.  I needed the Date one for 
> code I'm 
> > > writing.  I didn't get the time to implement any for 
> primitive types 
> > > yet.
> >
> > > Range supports disjoint ranges of values, checking to see 
> if a value 
> > > falls within the range, merging two ranges, etc.
> >
> > So this is like NumberRange, but genericises it and makes it cool?
> >
> > > I will send my code as soon as I can-- right now I'm setting up a 
> > > home network, and my laptop isn't on it yet.  In the 
> meantime, can 
> > > you post the CurrencyRange code you've got?  Thanks a lot. I 
> > > definitely think it will be of general-purpose 
> application.  I don't 
> > > know of any quantities library either, but I'd be 
> thrilled to take a 
> > > look at one.
> >
> > Jade's the only one I've heard of. By a guy over in .fr I 
> think. For 
> > quantities that is, always heard good things of it.
> >
> > Hen
> >
> >
> > --
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