A Proposal for Project Layers
David Farber
dfarber at numenor.com
Wed Nov 17 04:19:37 UTC 1999
i'm not saying that the following file in would actually work, but i could
imagine wanting to do something like:
!nil subclass: #Object
instanceVariableNames: ''
classVariableNames: ''
poolDictionaries: ''
category: 'java.lang'!
!Object subclass: #Float "actually, Float in Smalltalk is a "
instanceVariableNames: '' "variableWordSubclass, but i don't know what "
classVariableNames: '' "that is all about."
poolDictionaries: ''
category: 'java.lang'!
!Float methodsFor: 'arithmetic' stamp: 'di 11/6/1998 13:22'!
+ aNumber
"Primitive. Answer the sum of the receiver and aNumber. Essential.
Fail if the argument is not a Float. See Object documentation
whatIsAPrimitive."
<primitive: 41>
"No error handling yet so we just die."! !
then, with a sufficently hacked compiler i might just be able to type the
following into a workspace and do it:
java.lang.Float i;
java.lang.Float j;
Smalltalk.Numeric.Float k; // so i don't have to implement printOn: just
yet
i = new Float(3.0);
j = new Float(4.0);
k = i + j;
Smalltalk.Transcript.show(k.asString()).cr();
hmmmm...if we ignored all the typing, we should be able to do a naive
translation to:
| i j k |
i := 3.0.
j := 4.0.
k := i + j.
Transcript show: k asString; cr.
just a thought...and not that i would really need a completely empty
project to do this; it is just an aesthetic quirk.
david
At 11:24 PM 11/15/99 -0500, you wrote:
>>[I won't have time to really go over the proposal until the morning bus
>>commute tomorrow, so my apologies if my question has an obvious answer.]
>>
>>So, it looks to me like we'll be able to *include* all the things we'd like
>>in Project Layers, but how facile will they be with *excluding* stuff. at
>>the ultimate extreme i really would like to be able to create a Project
>>with *nothing* in it. No Object. No Collections. Nothing. I would, of
>>course, still like to be able to use the standard tools (browsers,
>>filelists, workspaces) in the totally empty project.
>
>How, exactly, could one evaluate "3+4" in such a project, let alone
>run MVC, morphic or a browser?
>
>
--
David Farber
dfarber at numenor.com
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