On Tue, Jul 21, 2020 at 3:08 PM Marcel Taeumel <marcel.taeumel at hpi.de>
wrote:

> Maybe I can check for #isImmediateClass first :-)
>

That's a good idea. Note that primitiveSomeInstance also returns nil in
case no instance exists (e.g. `EToyProjectDetailsMorph someInstance ==
nil`).
I believe the behavior you observe wrt immediates has historical reasons:
#someInstance returns the first instance found in the object memory, and
you can use #nextInstance: for iteration (this mechanism was later replaced
by #allInstances). Iterating instances doesn't make sense for immediates,
the "same instance" can occur multiple times in the heap.

Fabio

> Am 21.07.2020 15:07:01 schrieb Marcel Taeumel <marcel.taeumel at hpi.de>:
> Hi Fabio.
>
> From an object-oriented perspective, it would be nice to get "some
> instance" when asking a class in the system for #someInstance. :-)
>
> As it is now, I have to start writing a little lookup table with "class ==
> SmallInteger ifTrue: [ .... ]" to lookup exemplary instances for some
> classes in the system.
>
> Best,
> Marcel
>
>
> Am 21.07.2020 14:53:31 schrieb Fabio Niephaus <lists at fniephaus.com>:
> On Tue, Jul 21, 2020 at 2:24 PM Marcel Taeumel <marcel.taeumel at hpi.de>
> wrote:
>
>> Hi all!
>>
>> Why is "SmallInteger someInstance == nil"?
>>
>
> Because SmallIntegers are immediate and cannot be instantiated
> (`SmallInteger new` fails). This implies:
>
> "SmallFloat64 someInstance == nil"
> "Character someInstance == nil"
>
> Why would you want someInstance of SmallInteger anyway?
>
> Fabio
>
>
>>
>> Best,
>> Marcel
>>
>>
>
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