[squeak-dev] Re: Selectors with underscores

Igor Stasenko siguctua at gmail.com
Fri Mar 12 03:16:24 UTC 2010

On 12 March 2010 05:00, Andreas Raab <andreas.raab at gmx.de> wrote:
> On 3/11/2010 3:51 PM, Torsten Bergmann wrote:
>> But my "Scoping? Why?" question was more a
>>  - "Why should we do that, when other Smalltalk dialects dont?".
>>  - "There is no scoping for this in others Smalltalk, so WHY should
>>     Squeak artificially have it."
>>  - "Why would we limit Squeak to allow it only to specific classes?"
>>  - "Why should we go an own route again here?"
> Isn't it obvious? Because Squeak has a history. And it's worth discussing if
> we want to break that history or not, and to what extent.
> "All the other Smalltalks" do not use underscores as assignments so all of
> the above questions are besides the point. This discussion is about Squeak
> and should be about Squeak. Scoping provides a relatively easy way out since
> it allows you to benefit from using underscores in selectors while allowing
> others to use underscores as assignments in their respective subsystems.
> BTW, just for the records, my *personal* opinion is expressed in Croquet:
> Forbid underscore altogether.
>> I stand my original suggestion/changeset which
>>  a) either disallows selectors with underscore for the whole image
>>      ->  turn preference off
>>  b)  ->  turn preference on
>>     fully allows one to file in and use code from other Smalltalk
>>     systems or implement the use case where you need an underscore
>>     in a selector in whatever class you require
>> This would reduce the balkanization of Smalltalk (see [1]) a little
>> bit and allow for easy exchange and freedom in implementation.
>> If one really mixes "underscore assignment" and "underscores in selectors"
>> then I would rather see x_ 1 converted to x := 1 or at least x _ 1
>> Hey it's all code and changeable! Especially when we have tools
>> like RefactoringBrowser, Rewrite Tool, ... and a dynamic system
>> that is able to tell us where such code exists.
> Having a working implementation of a tool that that automatically rewrites
> underscores into assignments on fileIn and MC package install would go a
> VERY long way to alleviate my concerns. In fact, even a prototype that
> illustrates the concept might be enough for now because it may encourage
> others to help.
Are you talking about this one? (see attachment).

> Cheers,
>  - Andreas

Best regards,
Igor Stasenko AKA sig.
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