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I didn't notice anyone else pointing this out... Have a look at how many "is" methods are defined on Object in Cuis. Although it is a very common pattern in Smalltalk, in Cuis this was changed slightly. Yes, there are some common is methods like isString (and
isComplex), but there is also the #is: method. The idea is to only implement #is: on your classes that should answer true. Have a look at implementors and senders to understand how it's implemented and used. I believe the purpose of this is to help prevent
packages from adding methods to Object unnecessarily. </div>
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Jon</div>
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<b>From: </b>Cuis-dev <cuis-dev-bounces@lists.cuis.st> on behalf of Jonathan Kelly via Cuis-dev <cuis-dev@lists.cuis.st><br>
<b>Date: </b>Friday, September 26, 2025 at 8:31 PM<br>
<b>To: </b>cuis-dev@lists.cuis.st <cuis-dev@lists.cuis.st><br>
<b>Cc: </b>Jonathan Kelly <jonkelly@fastmail.fm><br>
<b>Subject: </b>[Cuis-dev] smalltalk newbie - Complex<br>
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<div class="ms-outlook-mobile-reference-message skipProofing">Hi,<br>
<br>
I'm playing with Cuis smalltalk, and building a Complex class, so far so<br>
good. But I want to add an "isComplex" method on Object, and<br>
an "asComplex" method on Number, but I can't find a way to tell Cuis<br>
that the new methods belongs to the Complex package.How do I make all my<br>
changes belong to the Specific package they're related to?<br>
<br>
Thanks<br>
<br>
Jon<br>
<br>
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