February 2019 - Pharo-users

Re: [Pharo-users] Slots doc

by Vitor Medina Cruz

Ok, thanks, I think I am understanding. I was trying to create a class to experiment but if I try to: Object subclass: #TestClassWithSlots slots: { } classVariables: { } package: 'Experiment-Slots' Code is reversed to: Object subclass: #TestClassWithSlots instanceVariableNames: '' classVariableNames: '' package: 'Experiment-Slots' Even if I do: Object subclass: #TestClassWithSlots slots: { #tests => BaseSlot } classVariables: { } package: ''Experiment-Slots' It reverts back to the instanceVariableNames version. Putting BooleanSlot avoids this reversion. I also tried to put RelationSlot just to see what happens and it entered in an infinite loop error. All those things are errors? If so, where should I report? On Wed, Feb 6, 2019 at 10:46 AM Marcus Denker <marcus.denker(a)inria.fr> wrote: > > > On 6 Feb 2019, at 13:25, Vitor Medina Cruz <vitormcruz(a)gmail.com> wrote: > > Thanks, I was looking for usages of InstanceVariableSlot. > > > All instance variables are InstanceVariableSlots. > > But to make it less verbose, we have a way to specify these without having > to put the name. > > > Object subclass: #Point > slots: { #x. #y } > classVariables: { } > package: 'Kernel-BasicObjectsâ > > is the same as > > Object subclass: #Point > slots: { #x => InstanceVariableSlot . #y => InstanceVariableSlot} > classVariables: { } > package: 'Kernel-BasicObjects' > > If you evaluate: > > Point slotNamed: #x > > you see that it returns a > > #x => InstanceVariableSlot > > Slot instance. > > (with all that: I sometime wonder if we should not get rid of the name > âSlotâ and just use the term âVariableââ¦ because that is what they areâ¦) > > > > In the case of SlotExampleMovie, #name and #year are of > IntanceVariableSlot layout (this definition is correct? A slot is or has > some Layout defined by the Slot class?) > > > No, the class has a Layout. See subclasses of AbstractLayout. This reifies > the magic number that is in the âformatâ ivar of Behaviors (third ivar of > all class like objects). > > In addition it makes class definition *explicitly* specify the layout. > > So Array in ST 80 is something like: > > ArrayedCollection variableSubclass: #Array > instanceVariableNames: '' > classVariableNames: '' > package: 'Collections-Sequenceable-Base' > > so the layout chosen is hidden in the class creation method > (variableSubclassâ¦), while with the reified layouts, it explicit: > > ArrayedCollection subclass: #Array > layout: VariableLayout > slots: { } > classVariables: { } > package: 'Collections-Sequenceable-Baseâ > > e.g. for CompiledMethod it makes clear that is a very special class: > > CompiledCode subclass: #CompiledMethod > layout: CompiledMethodLayout > slots: { } > classVariables: { } > package: 'Kernel-Methodsâ > > > > > On Wed, Feb 6, 2019 at 10:14 AM Marcus Denker <marcus.denker(a)inria.fr> > wrote: > >> >> >> > On 6 Feb 2019, at 12:41, Denis Kudriashov <dionisiydk(a)gmail.com> wrote: >> > >> > Would be nice to have a command in browser to show users of selected >> slot >> > >> >> Yes! >> >> Marcus >> >> >> >

Feb. 6, 2019

Re: [Pharo-users] Running test

by Hilaire

In the other hand, I am suspecting this Mac VM[1] downloadedÂ from the Pharo download page may have issue. After all the Linux VM from this same page is defunct as I already report it. I had to get one from the Pharo Launcher. The Windows VM from this same Pharo download page is functional, though. Can someone with an Apple Macintosh confirm this Mac VM[1] is ok? Thanks Hilaire [1] https://files.pharo.org/get-files/70/pharo-mac-stable.zip Le 06/02/2019 Ã 17:19, Hilaire a Ã©critÂ : > Can Mac OSX provides more usefull message? -- Dr. Geo http://drgeo.eu

Feb. 6, 2019

Re: [Pharo-users] Running test

by Hilaire

Can Mac OSX provides more usefull message? Le 06/02/2019 Ã 14:53, Andrei Chis a Ã©critÂ : > In my case if I download the app using the web browser and put it in > the Applications folder I still get `âDrGeoâ is damaged and canât be > opened. You should move it to the Trash*.*` -- Dr. Geo http://drgeo.eu

Feb. 6, 2019

Re: [Pharo-users] Running test

by Andrei Chis

In my case if I download the app using the web browser and put it in the Applications folder I still get `âDrGeoâ is damaged and canât be opened. You should move it to the Trash*.*` On Tue, Feb 5, 2019 at 6:55 PM Hilaire <hilaire(a)drgeo.eu> wrote: > Thanks John and Andrei. > > And if you drag the app in the application folder does it work? > > Le 05/02/2019 Ã 11:06, Andrei Chis a Ã©crit : > > But this happens only if I click the download link and use the web > > browser to download it. > > > > If I use wget I can open it but it does not find the image: > > > -- > Dr. Geo > http://drgeo.eu > > > >

Feb. 6, 2019

Re: [Pharo-users] Slots doc

by Marcus Denker

> On 6 Feb 2019, at 13:25, Vitor Medina Cruz <vitormcruz(a)gmail.com> wrote: > > Thanks, I was looking for usages of InstanceVariableSlot. All instance variables are InstanceVariableSlots. But to make it less verbose, we have a way to specify these without having to put the name. Object subclass: #Point slots: { #x. #y } classVariables: { } package: 'Kernel-BasicObjectsâ is the same as Object subclass: #Point slots: { #x => InstanceVariableSlot . #y => InstanceVariableSlot} classVariables: { } package: 'Kernel-BasicObjects' If you evaluate: Point slotNamed: #x you see that it returns a #x => InstanceVariableSlot Slot instance. (with all that: I sometime wonder if we should not get rid of the name âSlotâ and just use the term âVariableââ¦ because that is what they areâ¦) > > In the case of SlotExampleMovie, #name and #year are of IntanceVariableSlot layout (this definition is correct? A slot is or has some Layout defined by the Slot class?) No, the class has a Layout. See subclasses of AbstractLayout. This reifies the magic number that is in the âformatâ ivar of Behaviors (third ivar of all class like objects). In addition it makes class definition *explicitly* specify the layout. So Array in ST 80 is something like: ArrayedCollection variableSubclass: #Array instanceVariableNames: '' classVariableNames: '' package: 'Collections-Sequenceable-Base' so the layout chosen is hidden in the class creation method (variableSubclassâ¦), while with the reified layouts, it explicit: ArrayedCollection subclass: #Array layout: VariableLayout slots: { } classVariables: { } package: 'Collections-Sequenceable-Baseâ e.g. for CompiledMethod it makes clear that is a very special class: CompiledCode subclass: #CompiledMethod layout: CompiledMethodLayout slots: { } classVariables: { } package: 'Kernel-Methodsâ > > On Wed, Feb 6, 2019 at 10:14 AM Marcus Denker <marcus.denker(a)inria.fr <mailto:marcus.denker@inria.fr>> wrote: > > > > On 6 Feb 2019, at 12:41, Denis Kudriashov <dionisiydk(a)gmail.com <mailto:dionisiydk@gmail.com>> wrote: > > > > Would be nice to have a command in browser to show users of selected slot > > > > Yes! > > Marcus > >

Feb. 6, 2019

Re: [Pharo-users] Running test

by Hilaire

In the first place? Le 06/02/2019 Ã 00:45, john pfersich a Ã©critÂ : > At least on MacOS Mojave, I had moved the app to the Application folder. -- Dr. Geo http://drgeo.eu

Feb. 6, 2019

Re: [Pharo-users] Slots doc

by Vitor Medina Cruz

Thanks, I was looking for usages of InstanceVariableSlot. In the case of SlotExampleMovie, #name and #year are of IntanceVariableSlot layout (this definition is correct? A slot is or has some Layout defined by the Slot class?) On Wed, Feb 6, 2019 at 10:14 AM Marcus Denker <marcus.denker(a)inria.fr> wrote: > > > > On 6 Feb 2019, at 12:41, Denis Kudriashov <dionisiydk(a)gmail.com> wrote: > > > > Would be nice to have a command in browser to show users of selected slot > > > > Yes! > > Marcus > > >

Feb. 6, 2019

Re: [Pharo-users] Slots doc

by Marcus Denker

> On 6 Feb 2019, at 12:41, Denis Kudriashov <dionisiydk(a)gmail.com> wrote: > > Would be nice to have a command in browser to show users of selected slot > Yes! Marcus

Feb. 6, 2019

Re: [Pharo-users] Slots doc

by Marcus Denker

> On 6 Feb 2019, at 12:30, Vitor Medina Cruz <vitormcruz(a)gmail.com> wrote: > > I couldn't find examples of Slot usage. Is there any ackage I can load that use it so that I can look as an example? The Slot-Tests has some. But most tests there are creating classes not he fly (to test the creation) The only classes using slots are for now SlotExampleMovie SlotExamplePerson which test the RelationSlot examples. We should make a package which has more classes that use themâ¦ Marcus

Feb. 6, 2019

Re: [Pharo-users] Slots doc

by Denis Kudriashov

Would be nice to have a command in browser to show users of selected slot 6 ÑÐµÐ²Ñ. 2019 Ð³. 11:32 Ð¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°ÑÐµÐ»Ñ "Vitor Medina Cruz" <vitormcruz(a)gmail.com> Ð½Ð°Ð¿Ð¸ÑÐ°Ð»: I couldn't find examples of Slot usage. Is there any ackage I can load that use it so that I can look as an example? On Mon, Feb 4, 2019 at 6:17 PM webwarrior <reg(a)webwarrior.ws> wrote: > Vitor Medina Cruz wrote > > Thanks, I had already read this paper, which got me interested in the > > concept of slots :) . Is it a prototype in Pharo or is ready to use? it > > will become as an official part of it? > > > > > > On Sun, Feb 3, 2019 at 10:13 AM Ben Coman < > > > btc@ > > > > wrote: > > > >> > >> > >> On Sun, 3 Feb 2019 at 17:50, Todd Blanchard via Pharo-users < > >> > > > pharo-users@.pharo > > >> wrote: > >> > >>> Seems like an opportunity...I have no idea what the addition of slots > >>> does but I would like to learn. > >>> > >>> On Feb 3, 2019, at 1:33 AM, ducasse < > > > stepharo@ > > > > wrote: > >>> > >>> Hello, > >>> > >>> Where I can find documentation for slots? > >>> > >>> I am trying to access the pharo books site but it is unreachable from > my > >>> network right now, I got a connection time out (It works from my 3G > >>> though > >>> (??) ), but if I remember correctly the is no slot description in any > >>> book. > >>> > >>> Regards, > >>> Vitor > >>> > >>> > >>> Hello victor > >>> > >>> There is no documentation about slots that I know. Iâm sorry. > >>> Marcus may want to write one in the future. > >>> > >>> Stef > >>> > >>> > >> I believe its an implementation of this paper... > >> > >> > https://rmod.inria.fr/archives/papers/Verw11a-OOSPLA11-FlexibleObjectLayout… > >> > >> > >> cheers -ben > >> > > Slots are already part of Pharo and are totally useable. > Some example slots are buggy though. > > Explore Slot and subclasses, their class comments and methods. > > One thing to note is if you change #emitStore: or #emitValue: methods in > your slot class, you need to trigger change in classes that use it. > > > > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html > >

Feb. 6, 2019