Re: RFC : Correcting some problems in rounding/number handling

[Bill Gribble]

Richard Wackerbarth <[EMAIL PROTECTED]> writes:
> No it is not. That is adding "apples" and "oranges".

No, it isn't.  Adding one "apple" to one "orange" is adding apples to
oranges.  Adding 1.01 to 1.001 is adding a number in hundredths to a
number in thousandths, and there's nothing sacrilegious about it.

I repeat: we need to enforce restrictions on what numbers we allow to
be used in what ways.  I don't think those restrictions belong in the
library that implements numbers and the various dances that they do.

> There is no reason that we should treat ALL measurements as numbers.
> You certainly want to treat things that are physically counted, like 
> "Dollars" or "Shares" as a common meta-type because all of the operations on 
> them don't care which units they are. It only matters that they are the same.

That's all I'm talking about.  I just include prices in the set of
objects including money and securities-holdings-amounts that should
use a common representation.

Bill Gribble

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