2009/10/27 St��phane Ducasse [via Smalltalk] <[hidden email]>

Apparently you find a problem in self evaluating on color or related.
Let me explain:

The idea of printing an object is that in some case
�� anObject printString let you recreate the object
example

�� 1
�� true
�� #(1)
�� #(1 2)
�� 10@50

this means that either you get the same object or when you executed ��
its printed representation you get it back.
This is handy when playing with an inspector or in a workspace

now for array if you get an array of points in the past
printing it would return
�� #(10 #@ 50 20 #@ 50)

which is different from what is was really
�� {10@50 . 20@50}
�� or Array new: 2 at:1 put: 10@50 ; at:2 put: 20@50

So when an object is selfevaluating it measn that its printed ��
representation can be used to recreate it
When an array contains only self evaluating objects then it is printed ��
with { } since it can also be recreated
now if you get an object inside an array taht is not self evaluating ��
then your collection cannot be self evaluating.
so we say it anarray of ... instead of a #( 10 # @ 20....)

But in your case something went wrong because color and others are ��
self evaluating.
could you provide with a snippet of code that we can check where the ��
problem is coming from?

Stef

On Oct 27, 2009, at 10:58 PM, nullPointer wrote:

>
> I don��t understand the behavior of printString method.
>
> in a class I define a method #style , which returns an array...
>
> style
>
> style notNil ifTrue:[ ^style ]
> ifFalse:[ ^{ self borderColor . self borderWidth . self color . ��
> self
> gradientColor . (self cornerStyle = #rounded) . true ��}].
>
> That method returns many times an Array. If #printString of that ��
> array is
> called the result is...
> '{Color black. 0. (Color r: 0.892 g: 0.887 b: 0.879). nil. false. ��
> true}'
>
>
> Well i have another method with same name in another class
>
> style
>
> ^{ self borderColor . self borderWidth . self color . self ��
> gradientColor .
> (self cornerStyle = #rounded) . true ��}
>
>
> but in that case when i call #printString of the Array result ...
> 'an Array(Color transparent 0 (Color r: 0.827 g: 0.827 b: 0.827) nil ��
> true
> true)'.
>
> I don��t understand nothing :| ��Both are instances of Array, and both ��
> is
> declared of same way.
>
>
> Regards
>
>
> --
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>
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