[squeak-dev] Object>>printOn: refined.

karl ramberg karlramberg at gmail.com
Tue Jun 2 14:56:35 UTC 2020


On Tue, Jun 2, 2020 at 4:36 PM Marcel Taeumel <marcel.taeumel at hpi.de> wrote:

> >I think Object>>printOn: is fine as is. Please don't touch it. :)
>
> Sorry, for the confusion. You are right. Especially since "super printOn:
> stream" is frequently used.
>
> I am talking about #defaultLabelForInspector. Trygve raised a very
> important concern.
>

Why do we even differentiate the window labels in Inspectors and Explorers
?

Best,
Karl


> Best,
> Marcel
>
> Am 02.06.2020 16:30:54 schrieb Tobias Pape <das.linux at gmx.de>:
>
> > On 02.06.2020, at 15:09, Marcel Taeumel wrote:
> >
> > Hmm... one could add an increasing number, to be reset on system
> startup. "Hello sir! This is array number 12 you have there. I wonder how
> much arrays you will come across today?" :-D
> >
> > "No, sir. Yesterday's array number 12 is long gone."
> >
> I think Object>>printOn: is fine as is. Please don't touch it. :)
>
> Best regards
> -Tobias
>
> > Best,
> > Marcel
> >> Am 02.06.2020 15:05:52 schrieb Tobias Pape :
> >>
> >>
> >> > On 02.06.2020, at 14:49, Marcel Taeumel wrote:
> >> >
> >> > > Teaching user to think in these numbers is, IMHO, not the right
> direction.
> >> >
> >> > It is important to teach users about object identity somehow.
> >>
> >> Maybe, but if so, not by telling people that/how/.. objects map to
> numbers :)
> >> -t
> >>
> >> >
> >> > Best,
> >> > Marcel
> >> >> Am 02.06.2020 14:38:46 schrieb Tobias Pape :
> >> >>
> >> >> Hi
> >> >>
> >> >> > On 02.06.2020, at 14:10, Trygve Reenskaug wrote:
> >> >> >
> >> >> > I find it frustrating to open 3 inspectors on different objects,
> all of them titled 'aString' (or whatever),
> >> >> > IMO, it is much better to open them on the 3 objects: [1234]
> aString, [3456] a String, [4567 a String.
> >> >> > The numbers in square brackets stand for the objects oop, actually
> its identityHash. They can be a 7-digit numbers; much too long for my
> short-time memory to hold many of them. I therefore truncate the number to
> 4 digits, accepting that I may, in rare cases, get 2 objects with the same
> identifier.
> >> >> >
> >> >> > I'm running 'Squeak5.3'.
> >> >> > Object>>printOn: aStream
> >> >> > "Append to the argument, aStream, a sequence of characters that
> identifies the receiver."
> >> >> > " The previous version identified the class, not the instance "
> >> >> > " This new version identifies the instance with its oop. "
> >> >> > " I arbitrarily truncate the oop to 4 digits to simplify reading. "
> >> >> >
> >> >> > | title |
> >> >> > title := self class name.
> >> >> > aStream
> >> >> > nextPutAll: '[' , (self asOop printString truncateTo: 4) , ']' ;
> >> >> > nextPutAll: (title first isVowel ifTrue: ['an '] ifFalse: ['a ']);
> >> >> > nextPutAll: title
> >> >>
> >> >> I'd rather not increase any complexity in Object.
> >> >> Besides, both oop and identityHash are too low-level for the average
> work-flow.
> >> >> Teaching user to think in these numbers is, IMHO, not the right
> direction.
> >> >>
> >> >> -1.
> >> >>
> >> >> Best regards
> >> >> -Tobias
> >> >>
> >> >>
> >> >
> >>
> >>
> >>
> >
>
>
>
>
>
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