Structure of objects and execution
Michael S. Klein
mklein at alumni.caltech.edu
Wed Oct 28 01:39:05 UTC 1998
> I haven't see it, but I talked to someone who had. It's just a graphing calculator
> that takes equations as input, right?
>
> Steve
The equation editor part was derived from Milo (same author). Milo was good
enough that I did my physics homework on it. It had little math smarts...
it even got simple integrals wrong. But its strength was being able to do
the grunge of math: commuting terms, distributing and factoring, simplifying
trivial expressions without droping a sign, and as easy as dragging.
For instance dragging X to the right would produce the following
transformations:
drag this X right

v
2 1
(3X + 4X ) = (  )
X
1
(3 + 4X) X = (  )
X
1 1
3 + 4X =  (  )
X X
1 1
3 + 4X = (   )
X X
1
3 + 4X = 
2
X
Just trying to type this crap in makes my skin crawl.
This was seconds of work with Milo.
Milo's interface was better than the GraphingCalculator in my opinion.
I remember trying to put equations into comments in Smalltalk once.
Proportional fonts make it that much harder.
Go Smalltalk. Go MathMorphs!
 Mike
P.S. do you have access to a Mac?
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