[self-interest] value, value:, etc in defaultBehavior

[Thorsten Dittmar]

Hello David,

for the object 17 and the method value it makes sense, but the object 17 and the method value: x it doesn't make so much sense. I always get a little bit nervous, when an object can response to a meaningless message. In our case it will answer again 17 because value: x is implemented as "self value". It would prefer to get an error, because it is much more difficult to find an error in a system that "works".

anyhow,  I got your intention and that was what I was asking for. Thx for answering

best regards

thorsten 


On Dec 22, 2011, at 5:43 PM, David Ungar wrote:

> 
> What is the value of 17? Or of 'foo' ? We thought it made sense that the value of 17 is 17.
> That way you can write:  max: x = ( > x ifTrue: self IfFalse: x )
> without square brackets. The value method gets inlined out, anyway.
> After all, 17 knows it's not a block.
> 
> - David (from iPad, typos likely)
> 
> On Dec 22, 2011, at 8:12 AM, Thorsten Dittmar <thormar at me.com> wrote:
> 
>>  
>> Hello folks,
>> 
>> I was always wondering why value and value with parameters was implemented in defaultBehavior and not in the trait block. Of course, that can make some stuff easier, but it looks a little bit like a dirty hack. Would be nice, if somebody can tell me a little bit the background of this implementation.
>> 
>> thx
>> 
> 
> 

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