Well, I don't think you'd programmatically create a new class, because your
instance has to have been an instance of a class that already exists. Or else
you would not have an instance to begin with.
Perhaps, you want a way to programatically reproduce an instance you've been
working with by hand in a Workspace. You have the instance. It's just right.
You want it to be programmatically reproducible at will. I'd use
Object>>storeString.
x := (HelloWorld new) color: 'Black'.
I've created a instance with an instvar. I send it storeString:
x storeString
and I get:
'(HelloWorld basicNew instVarAt: 1 put: ''Black''; yourself)'
It's a bit crufty to me. I remove the first and last quote and parentheses. The
double single quotes aren't great, so I remove them too.
HelloWorld basicNew instVarAt: 1 put: 'Black'; yourself
Print it, and get:
a HelloWorld
I'm not sure why it comes in some extra syntax.
That's my best guess at an answer to your question. YMMV.
Chris
On 2012-06-09, at 5:04 PM, Erich Groat wrote:
>
> Hi all,
>
> I was wondering if there are any built-in facilities for taking a particular
> instance a class X, call it anX, and creating from it a class method that
> returns an identical instance of anX for future use.
>
> For example, say I'm futzing around in a workspace with an instance of a
> class called InteractiveWindowShape, tweaking things so that I have a nice
> window with all the colors and proportions and buttons I want, perhaps using
> Morphs to create the thing dynamically (so it's some kind of Morph object).
> In the course of this I get an instance of anInteractiveWindowShape that I am
> satisfied with, all the instance variables set just right. Let's call this
> object | idealShape |. It's just sitting there, rather vulnerably, in a
> workspace, the result of my using various screen tools over the last half
> hour. Now, I don't just want to save this object: I want to be able to create
> an identical one whenever I like. So what I want is a Class method,
> InteractiveWindowShapes class>>newIdealShape, that creates an instance
> exactly like idealShape.
>
> Is there a message I can send to this instance idealShape that would return a
> block of code that would act as a class method, which I could then call
> newIdealShape, and which would return an identical instance?
>
> I suspect such a general method might not exist, due to the potential hazards
> surrounding the deep copy problem; I also suspect I may not be imagining the
> best sort of solution to my problem. Is there a strategy for this?
>
> Thanks all!
>
> Erich
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