[squeak-dev] New version BabyIDE + report
Trygve Reenskaug
trygver at ifi.uio.no
Tue Sep 16 08:35:42 UTC 2008
Karl,
Do you feel like a guinea pig? You should, if you are trying to read and
even write programs in BabyIDE. The programmer's mental model of what is
a DCI-compliant program is still evolving. It will be very useful if you
continue informing me about potential stumbling blocks so that I can
iron them out.
All the best
--Trygve
On 15.09.2008 22:52, karl ramberg wrote:
> I found much of what you describe after some deeper exploration. This
> new way of writing and presenting takes a little time getting used to
> :-)
>
> I like the way you can add in and out super classes in the browser.
>
> Karl
>
>
> On 9/14/08, Trygve Reenskaug <trygver at ifi.uio.no> wrote:
>
>> Hi Karl,
>> Every role has a similarly named method in the context class. This
>> method returns the object that shall be bound to the role. E.g.:
>>
>> ¤ Shapes4ArrowsCtx >>Shape1
>> ¤ ^data anyShape
>>
>> The different shapes (and arrows) are found in a runtime dictionary that
>> that is filled when the context class is instantiated:
>>
>> ¤ Shapes4ArrowsCtx >>bindRolesToObjects
>> ¤ | messName |
>> ¤ self class roleNames
>> ¤ do: [:rNam |
>> ¤ messName := rNam asString asSymbol.
>> ¤ roleMap
>> ¤ at: messName
>> ¤ put: (self
>> ¤ perform: messName
>> ¤ ifNotUnderstood: [])].
>> ¤ ^ roleMap
>>
>> The idea is that a programmer need to understand this, but should not
>> need to understand the details of how it is done. (To see the details,
>> look at these methods:
>> Shapes4Env>>startArrowAnimation
>> Shapes4ArrowsCtx class>>executeInContext:
>> Shapes4ArrowsCtx >>on:env:
>> Shapes4ArrowsCtx >>bindRolesToObjects
>>
>> I hope it answers your question.
>>
>> The above is the current implementation. I believe there is much room
>> for simplification that should emerge when I write a tutorial. (Much
>> better to rewrite the code than to try its complexities).
>>
>> Chers
>> --Trygve
>>
>>
>> On 14.09.2008 16:25, Karl Ramberg wrote:
>>
>>> Trygve Reenskaug wrote:
>>>
>>>> I just posted a new version of the BabyIDE report and Squeak image.
>>>> I post an image rather then a Montizello loadable file because it is
>>>> just a demo.
>>>> I am working on a small application all done in BabyIDE.
>>>> I'll post a Monticello file (BabyIDE.alpha.0)as soon as this work is
>>>> completed.
>>>>
>>> I looked at the IDE and tried to find out how the different shapes got
>>> selected in a sequence, but I got lost.
>>> Are the roles bound before the animation starts or how is it set up ?
>>>
>>> Karl
>>>
>>>
>>>
>> --
>>
>> Trygve Reenskaug mailto: trygver at ifi.uio.no
>>
>> Morgedalsvn. 5A http://heim.ifi.uio.no/~trygver
>>
>> N-0378 Oslo Tel: (+47) 22 49 57 27
>>
>> Norway
>>
>>
>>
>
>
>
--
Trygve Reenskaug mailto: trygver at ifi.uio.no
Morgedalsvn. 5A http://heim.ifi.uio.no/~trygver
N-0378 Oslo Tel: (+47) 22 49 57 27
Norway
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.squeakfoundation.org/pipermail/squeak-dev/attachments/20080916/5a3ec677/attachment.htm
More information about the Squeak-dev
mailing list
|