December 2020 - Pharo-users

Re: Can a class be not equal to itself?

by Konrad Hinsen

On 31/12/2020 12:19, Konrad Hinsen wrote: > It's been a while since I have encountered mysterious behavior in > Pharo, but today it happened. I set up a dictionary with classes as > keys, and got "Key not found" errors for keys that were definitely in > my dictionary. A quick debugging session showed the underlying issue: > I had two references to a class which look the same when inspected, > but turn out to be not identical (==) and thus not equal (=). How can > this happen? Update, after a few more debugging sessions: my dictionary is the result of a deepCopy operation, meaning the class has been copied. And the copy of a class is indeed a distinct but otherwise indistinguishable class. 'Object copy = Object' is 'false'. Konrad.

Dec. 31, 2020

Re: Can a class be not equal to itself?

by Tudor Girba

Hi Konrad, Could it be that you have overridden = on the class side of your class? Otherwise, I do not see how this can happen. Cheers, Tudor > On Dec 31, 2020, at 12:19 PM, Konrad Hinsen <konrad.hinsen(a)fastmail.net> wrote: > > Hi everyone, > > > It's been a while since I have encountered mysterious behavior in Pharo, but today it happened. I set up a dictionary with classes as keys, and got "Key not found" errors for keys that were definitely in my dictionary. A quick debugging session showed the underlying issue: I had two references to a class which look the same when inspected, but turn out to be not identical (==) and thus not equal (=). How can this happen? > > > Konrad. -- feenk.com "It's not how it is, it is how we see it."

Dec. 31, 2020

Can a class be not equal to itself?

by Konrad Hinsen

Hi everyone, It's been a while since I have encountered mysterious behavior in Pharo, but today it happened. I set up a dictionary with classes as keys, and got "Key not found" errors for keys that were definitely in my dictionary. A quick debugging session showed the underlying issue: I had two references to a class which look the same when inspected, but turn out to be not identical (==) and thus not equal (=). How can this happen? Konrad.

Dec. 31, 2020

Re: PrintString in PBE8

by JuliÃ¡n Maestri

As far as I know: aStream nextPutAll: ' with value: â; print: count. Works with most streams, does not create intermediary streams, and is readable. On Sun, 27 Dec 2020 at 05:59, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: > > > On 26 Dec 2020, at 20:41, Sean P. DeNigris <sean(a)clipperadams.com> wrote: > > Sven Van Caekenberghe-2 wrote > > Maybe his question is (also) why the automatic refactoring did it wrong, > the rules warned about the wrong use of #printString, suggested a fix, but > the solution is still using #printString, hence the same problem. > > > I might be reading it wrong, but I thought everything worked as advertised, > and the limitation was that there was no option to automatically fix the > other warning about the printString. The "Use cascaded nextPutAll:âs > instead > of #, in #nextPutAll:" transformation did change: > > aStream nextPutAll: ' with value: ', count printString. > > to: > > aStream > nextPutAll: ' with value: '; > nextPutAll: count printString > > > > > Yes but with such approach you still create an extra intermediary > stream. > > The solution should be > > > aStream > nextPutAll: ' with value: â. > count printOn: aStream > > Now this is a bit more tricky to do. > > > > > > ----- > Cheers, > Sean > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html > > > -------------------------------------------- > StÃ©phane Ducasse > http://stephane.ducasse.free.fr / http://www.pharo.org > 03 59 35 87 52 > Assistant: Aurore Dalle > FAX 03 59 57 78 50 > TEL 03 59 35 86 16 > S. Ducasse - Inria > 40, avenue Halley, > Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza > Villeneuve d'Ascq 59650 > France > >

Dec. 29, 2020

Re: Pharo and Virtual Realitity

by Sven Van Caekenberghe

> On 28 Dec 2020, at 03:25, askoh <askoh(a)askoh.com> wrote: > > ZnReadEvalPrintDelegate startInServerOn: 1701. > > (ZnServer on: 1701) > bindingAddress: NetNameResolver localHostAddress; > delegate: ZnReadEvalPrintDelegate new; > start; > yourself I don't know anything about VRIDE but the above two expressions are equivalent, they do the same thing, twice. You need only one of them.

Dec. 28, 2020

Re: Pharo and Virtual Realitity

by askoh

Hi: I installed Pharo and enter the following in workspace. Author uniqueInstance fullName: 'VRIDE User'. Metacello new baseline: 'Roassal3'; repository: 'github://ObjectProfile/Roassal3'; load. Metacello new baseline: 'Roassal3Exporters'; repository: 'github://ObjectProfile/Roassal3Exporters'; load. Metacello new baseline: 'Roassal3Exporters'; repository: 'github://ObjectProfile/Roassal3Exporters'; load: 'AFrame'. ZnReadEvalPrintDelegate startInServerOn: 1701. (ZnServer on: 1701) bindingAddress: NetNameResolver localHostAddress; delegate: ZnReadEvalPrintDelegate new; start; yourself PharoVRIDE open I don't understand the following instructions in GitHub page: Now open PharoVRIDE. Right into the first scene, you will see a field asking for the IP address of your Pharo server. It must be as follows: http://<Host name or IP Address>:<Port>/repl If you are running on localhost just as shown in the previous script, press the Enter button to proceed. Otherwise, you must specify an address. Finally, put on your VR headset, and try some stuff! Please advise. Thanks, Aik-Siong Koh -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

Dec. 28, 2020

Re: PrintString in PBE8

by StÃ©phane Ducasse

> On 26 Dec 2020, at 20:41, Sean P. DeNigris <sean(a)clipperadams.com> wrote: > > Sven Van Caekenberghe-2 wrote >> Maybe his question is (also) why the automatic refactoring did it wrong, >> the rules warned about the wrong use of #printString, suggested a fix, but >> the solution is still using #printString, hence the same problem. > > I might be reading it wrong, but I thought everything worked as advertised, > and the limitation was that there was no option to automatically fix the > other warning about the printString. The "Use cascaded nextPutAll:âs instead > of #, in #nextPutAll:" transformation did change: > > aStream nextPutAll: ' with value: ', count printString. > > to: > > aStream > nextPutAll: ' with value: '; > nextPutAll: count printString > > Yes but with such approach you still create an extra intermediary stream. The solution should be aStream nextPutAll: ' with value: â. count printOn: aStream Now this is a bit more tricky to do. > > ----- > Cheers, > Sean > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html -------------------------------------------- StÃ©phane Ducasse http://stephane.ducasse.free.fr / http://www.pharo.org 03 59 35 87 52 Assistant: Aurore Dalle FAX 03 59 57 78 50 TEL 03 59 35 86 16 S. Ducasse - Inria 40, avenue Halley, Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza Villeneuve d'Ascq 59650 France

Dec. 27, 2020

Re: PrintString in PBE8

by Sean P. DeNigris

Sven Van Caekenberghe-2 wrote > Maybe his question is (also) why the automatic refactoring did it wrong, > the rules warned about the wrong use of #printString, suggested a fix, but > the solution is still using #printString, hence the same problem. I might be reading it wrong, but I thought everything worked as advertised, and the limitation was that there was no option to automatically fix the other warning about the printString. The "Use cascaded nextPutAll:âs instead of #, in #nextPutAll:" transformation did change: aStream nextPutAll: ' with value: ', count printString. to: aStream nextPutAll: ' with value: '; nextPutAll: count printString ----- Cheers, Sean -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

Dec. 26, 2020

Re: PrintString in PBE8

by StÃ©phane Ducasse

I opened a ticket. https://github.com/pharo-project/pharo/issues/8178 > On 25 Dec 2020, at 22:43, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: > > Ah indeed. > So we will have to have a look. > > S > >> On 25 Dec 2020, at 16:36, Sven Van Caekenberghe <sven(a)stfx.eu <mailto:sven@stfx.eu>> wrote: >> >> Maybe his question is (also) why the automatic refactoring did it wrong, the rules warned about the wrong use of #printString, suggested a fix, but the solution is still using #printString, hence the same problem. >> >>> On 25 Dec 2020, at 16:20, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr <mailto:stephane.ducasse@inria.fr>> wrote: >>> >>> Hi >>> >>> this warning is just that printOn: is working on a stream >>> >>> and when we do >>> >>> printOn: aStream >>> >>> aStream nextPutAll: x printString >>> >>> printString creates yeat another stream then ask the contents and passes it to the first one >>> >>> >>> printOn: aStream >>> >>> x printOn: aStream >>> >>> is faster and cleaner in that case. >>> >>> >>>> On 24 Dec 2020, at 18:32, g_patrickb--- via Pharo-users <pharo-users(a)lists.pharo.org <mailto:pharo-users@lists.pharo.org>> wrote: >>>> >>>> I started working through PBE8, and in section 3.13 there is a method: >>>> >>>> Counter >> printOn: aStream >>>> >>>> super printOn: aStream. >>>> >>>> aStream nextPutAll: ' with value: ', count printString. >>>> >>>> But it returns two warnings: >>>> >>>> [printString] No printString inside printOn >>>> >>>> Use cascaded nextPutAll:âs instead of #, in #nextPutAll: >>>> >>>> >>>> >>>> It has the option to automatically resolve the cascaded nextPutAll: which results in: >>>> >>>> printOn: aStream >>>> >>>> super printOn: aStream. >>>> >>>> aStream >>>> >>>> nextPutAll: ' with value: '; >>>> >>>> nextPutAll: count printString >>>> >>>> >>>> >>>> But it still has the warning about printString. >>>> >>> >>> -------------------------------------------- >>> StÃ©phane Ducasse >>> http://stephane.ducasse.free.fr <http://stephane.ducasse.free.fr/> / http://www.pharo.org <http://www.pharo.org/> >>> 03 59 35 87 52 >>> Assistant: Aurore Dalle >>> FAX 03 59 57 78 50 >>> TEL 03 59 35 86 16 >>> S. Ducasse - Inria >>> 40, avenue Halley, >>> Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza >>> Villeneuve d'Ascq 59650 >>> France >>> > > -------------------------------------------- > StÃ©phane Ducasse > http://stephane.ducasse.free.fr <http://stephane.ducasse.free.fr/> / http://www.pharo.org <http://www.pharo.org/> > 03 59 35 87 52 > Assistant: Aurore Dalle > FAX 03 59 57 78 50 > TEL 03 59 35 86 16 > S. Ducasse - Inria > 40, avenue Halley, > Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza > Villeneuve d'Ascq 59650 > France > -------------------------------------------- StÃ©phane Ducasse http://stephane.ducasse.free.fr / http://www.pharo.org 03 59 35 87 52 Assistant: Aurore Dalle FAX 03 59 57 78 50 TEL 03 59 35 86 16 S. Ducasse - Inria 40, avenue Halley, Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza Villeneuve d'Ascq 59650 France

Dec. 25, 2020

Re: PrintString in PBE8

by StÃ©phane Ducasse

Ah indeed. So we will have to have a look. S > On 25 Dec 2020, at 16:36, Sven Van Caekenberghe <sven(a)stfx.eu> wrote: > > Maybe his question is (also) why the automatic refactoring did it wrong, the rules warned about the wrong use of #printString, suggested a fix, but the solution is still using #printString, hence the same problem. > >> On 25 Dec 2020, at 16:20, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: >> >> Hi >> >> this warning is just that printOn: is working on a stream >> >> and when we do >> >> printOn: aStream >> >> aStream nextPutAll: x printString >> >> printString creates yeat another stream then ask the contents and passes it to the first one >> >> >> printOn: aStream >> >> x printOn: aStream >> >> is faster and cleaner in that case. >> >> >>> On 24 Dec 2020, at 18:32, g_patrickb--- via Pharo-users <pharo-users(a)lists.pharo.org> wrote: >>> >>> I started working through PBE8, and in section 3.13 there is a method: >>> >>> Counter >> printOn: aStream >>> >>> super printOn: aStream. >>> >>> aStream nextPutAll: ' with value: ', count printString. >>> >>> But it returns two warnings: >>> >>> [printString] No printString inside printOn >>> >>> Use cascaded nextPutAll:âs instead of #, in #nextPutAll: >>> >>> >>> >>> It has the option to automatically resolve the cascaded nextPutAll: which results in: >>> >>> printOn: aStream >>> >>> super printOn: aStream. >>> >>> aStream >>> >>> nextPutAll: ' with value: '; >>> >>> nextPutAll: count printString >>> >>> >>> >>> But it still has the warning about printString. >>> >> >> -------------------------------------------- >> StÃ©phane Ducasse >> http://stephane.ducasse.free.fr / http://www.pharo.org >> 03 59 35 87 52 >> Assistant: Aurore Dalle >> FAX 03 59 57 78 50 >> TEL 03 59 35 86 16 >> S. Ducasse - Inria >> 40, avenue Halley, >> Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza >> Villeneuve d'Ascq 59650 >> France >> -------------------------------------------- StÃ©phane Ducasse http://stephane.ducasse.free.fr / http://www.pharo.org 03 59 35 87 52 Assistant: Aurore Dalle FAX 03 59 57 78 50 TEL 03 59 35 86 16 S. Ducasse - Inria 40, avenue Halley, Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza Villeneuve d'Ascq 59650 France

Dec. 25, 2020

Re: PrintString in PBE8

by Sven Van Caekenberghe

Maybe his question is (also) why the automatic refactoring did it wrong, the rules warned about the wrong use of #printString, suggested a fix, but the solution is still using #printString, hence the same problem. > On 25 Dec 2020, at 16:20, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: > > Hi > > this warning is just that printOn: is working on a stream > > and when we do > > printOn: aStream > > aStream nextPutAll: x printString > > printString creates yeat another stream then ask the contents and passes it to the first one > > > printOn: aStream > > x printOn: aStream > > is faster and cleaner in that case. > > >> On 24 Dec 2020, at 18:32, g_patrickb--- via Pharo-users <pharo-users(a)lists.pharo.org> wrote: >> >> I started working through PBE8, and in section 3.13 there is a method: >> >> Counter >> printOn: aStream >> >> super printOn: aStream. >> >> aStream nextPutAll: ' with value: ', count printString. >> >> But it returns two warnings: >> >> [printString] No printString inside printOn >> >> Use cascaded nextPutAll:âs instead of #, in #nextPutAll: >> >> >> >> It has the option to automatically resolve the cascaded nextPutAll: which results in: >> >> printOn: aStream >> >> super printOn: aStream. >> >> aStream >> >> nextPutAll: ' with value: '; >> >> nextPutAll: count printString >> >> >> >> But it still has the warning about printString. >> > > -------------------------------------------- > StÃ©phane Ducasse > http://stephane.ducasse.free.fr / http://www.pharo.org > 03 59 35 87 52 > Assistant: Aurore Dalle > FAX 03 59 57 78 50 > TEL 03 59 35 86 16 > S. Ducasse - Inria > 40, avenue Halley, > Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza > Villeneuve d'Ascq 59650 > France >

Dec. 25, 2020

Re: PrintString in PBE8

by StÃ©phane Ducasse

Hi this warning is just that printOn: is working on a stream and when we do printOn: aStream aStream nextPutAll: x printString printString creates yeat another stream then ask the contents and passes it to the first one printOn: aStream x printOn: aStream is faster and cleaner in that case. > On 24 Dec 2020, at 18:32, g_patrickb--- via Pharo-users <pharo-users(a)lists.pharo.org> wrote: > > I started working through PBE8, and in section 3.13 there is a method: > > Counter >> printOn: aStream > > super printOn: aStream. > > aStream nextPutAll: ' with value: ', count printString. > > But it returns two warnings: > > [printString] No printString inside printOn > > Use cascaded nextPutAll:âs instead of #, in #nextPutAll: > > > > It has the option to automatically resolve the cascaded nextPutAll: which results in: > > printOn: aStream > > super printOn: aStream. > > aStream > > nextPutAll: ' with value: '; > > nextPutAll: count printString > > > > But it still has the warning about printString. > -------------------------------------------- StÃ©phane Ducasse http://stephane.ducasse.free.fr / http://www.pharo.org 03 59 35 87 52 Assistant: Aurore Dalle FAX 03 59 57 78 50 TEL 03 59 35 86 16 S. Ducasse - Inria 40, avenue Halley, Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza Villeneuve d'Ascq 59650 France

Dec. 25, 2020

Re: PrintString in PBE8

by Richard Sargent

You should be able to replace nextPutAll: count printString with print: count On December 24, 2020 9:32:38 AM PST, g_patrickb--- via Pharo-users <pharo-users(a)lists.pharo.org> wrote: >I started working through PBE8, and in section 3.13 there is a method: > >`Counter >> printOn: aStream ` > >`super printOn: aStream. ` > >`aStream nextPutAll: ' with value: ', count printString.` > >But it returns two warnings: > >\[printString\] No printString inside printOn > >Use cascaded nextPutAll:âs instead of #, in #nextPutAll: > >It has the option to automatically resolve the cascaded nextPutAll: >which results in: > >`printOn: aStream` > >` super printOn: aStream.` > >` aStream` > >` nextPutAll: ' with value: ';` > >` nextPutAll: count printString` > >But it still has the warning about printString.

Dec. 24, 2020

PrintString in PBE8

by g_patrickb＠yahoo.com

I started working through PBE8, and in section 3.13 there is a method: `Counter >> printOn: aStream ` `super printOn: aStream. ` `aStream nextPutAll: ' with value: ', count printString.` But it returns two warnings: \[printString\] No printString inside printOn Use cascaded nextPutAll:âs instead of #, in #nextPutAll: It has the option to automatically resolve the cascaded nextPutAll: which results in: `printOn: aStream` ` super printOn: aStream.` ` aStream` ` nextPutAll: ' with value: ';` ` nextPutAll: count printString` But it still has the warning about printString.

Dec. 24, 2020

Re: Pharo image size increases continuously

by Dario Romano Trussardi

Ciao, > Il giorno 23 dic 2020, alle ore 20:09, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> ha scritto: > > In Pharo 90 latest image I got > > and > > Array allInstances groupedBy: [:each | each pointersTo] in a clean Pharo 8.0.0 image with 34798 array instances after 2 hours still no result. Let's imagine ourselves with 572944 array instances In these weeks - months I am just making simple changes to the code and testing the functioning of the Seaside application via browser (always keeping clean the WA sessions that are created). I just can't understand what could be the source of the problem. > > killed or is taking probably a huge amount of time. I still remark the fact: I noticed that the saved image is now always the size of: 280245832 Strange â¦.?! Is there any parameter to configure ? ( GC settings? Image size limit? â¦â¦? â¦. ? ) Considerations ? Thanks, Dario

Dec. 23, 2020

Re: Pharo image size increases continuously

by StÃ©phane Ducasse

In Pharo 90 latest image I got and Array allInstances groupedBy: [:each | each pointersTo] killed or is taking probably a huge amount of time. 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24.00 Point 9616 12679 304296 0.40 24.00 GlobalVariable 824 10313 247512 0.30 24.00 SparseLargeTable 3157 2 236680 0.30 118340.00 OrderedCollection 7145 6349 203168 0.30 32.00 GlyphForm 770 2820 180480 0.20 64.00 FreeTypeCacheEntry 748 3216 180096 0.20 56.00 RBPatternVariableNode 1495 1470 141120 0.20 96.00 TaCompositionElement 2326 8781 140496 0.20 16.00 MorphExtension 3922 982 125696 0.20 128.00 Pragma 3886 3848 123136 0.20 32.00 ClassVariable 1098 3008 120320 0.20 40.00 LiteralVariable 3050 4588 110112 0.10 24.00 Context 28759 1579 105896 0.10 67.07 DateAndTime 14494 2394 95760 0.10 40.00 FullBlockClosure 2821 2081 90648 0.10 43.56 AtomicQueueItem 662 3288 78912 0.10 24.00 TraitedMetaclass 3680 877 77176 0.10 88.00 WideString 2715 118 70648 0.10 598.71 ToggleMenuItemMorph 4361 369 64944 0.10 176.00 RPackageTag 3596 1866 59712 0.10 32.00 MCLazyVersionInfo 1225 773 55656 0.10 72.00 MCWorkingCopy 7667 773 55656 0.10 72.00 RBPatternMethodNode 1347 427 51240 0.10 120.00 RBMessageNode 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ReUnpackagedCodeRule 445 1 16 0.00 16.00 PharoBootstrapRule 998 1 16 0.00 16.00 ReUsesTrueRule 472 1 16 0.00 16.00 ReTestClassNotInPackageWithTestEndingNameRule 3621 1 16 0.00 16.00 ReTestClassNameShouldNotEndWithTests 3598 1 16 0.00 16.00 ReTestClassNameShouldEndWithTestRule 3583 1 16 0.00 16.00 ReBadMessageRule 694 1 16 0.00 16.00 ReShouldSendSuperSetUpAsFirstMessage 3609 1 16 0.00 16.00 ReUncommonMessageSendRule 496 1 16 0.00 16.00 ReShouldSendSuperTearDownAsLastMessage 3614 1 16 0.00 16.00 Total 2324467 1021155 7770101698.80000000000001 16.00 ReThemeAPIUpdateRule 493 1 16 0.00 16.00 ReTestClassNameShouldEndWithTestRule 3583 1 16 0.00 16.00 ReShouldSendSuperTearDownAsLastMessage 3614 1 16 0.00 16.00 ReTestClassNameShouldNotEndWithTests 3598 1 16 0.00 16.00 Total 2342011 1021078 7769916898.80000000000001 > On 23 Dec 2020, at 18:27, Dario Romano Trussardi <dario.trussardi65(a)gmail.com> wrote: > > Ciao, > > >> Hello >> >> >> did you try the SpaceTally to get more information? > > yes, but it's not that I have clarified the situationâ¦. > > Here is what was found by: WASpaceStatus > > > Class code space # instances inst space percent > Array 4280 572944 74716632 31.80 % > ByteString 2942 359040 32288104 13.80 % > CompiledMethod 25860 152506 14457352 6.20 % > Association 1583 486570 11677680 5.00 % > WeakArray 1840 75151 9605160 4.10 % > ByteArray 14932 1066 9317528 4.00 % > Bitmap 4637 9794 8178584 3.50 % > WeakFinalizerItem 922 113763 4550520 1.90 % > ByteSymbol 1920 117402 4019072 1.70 % > MethodDictionary 3460 24188 3978168 1.70 % > WeakKeyAssociation 1404 114080 2737920 1.20 % > Point 10095 112123 2690952 1.10 % > OrderedCollection 7202 77766 2488512 1.10 % > IdentitySet 408 99525 2388600 1.00 % > WeakOrderedCollection 61 69063 2210016 0.90 % > OmReference 1018 91812 2203488 0.90 % > MorphExtension 4141 15672 2006016 0.90 % > ExternalAddress 4195 113064 1809024 0.80 % > RGMethodDefinition 10471 27318 1748352 0.70 % > Dictionary 10055 71603 1718472 0.70 % > DateAndTime 16976 38843 1553720 0.70 % > IdentityDictionary 381 54273 1302552 0.60 % > Set 3439 53877 1293048 0.60 % > ScaledDecimal 4318 36765 1176480 0.50 % > MCMethodDefinition 5085 17919 1146816 0.50 % > Protocol 3226 45742 1097808 0.50 % > Context 29456 16704 1074488 0.50 % > Duration 6626 42444 1018656 0.40 % > BlockClosure 14186 30815 1006304 0.40 % > ClassOrganization 5502 22422 896880 0.40 % > MorphEventSubscription 1207 22256 890240 0.40 % > Rectangle 12732 36139 867336 0.40 % > TableLayoutProperties 1626 5631 765816 0.30 % > RBMessageNode 8768 11663 746432 0.30 % > OmEntry 707 30681 736344 0.30 % > AllProtocol 689 22422 717504 0.30 % > SpValueHolder 857 22005 704160 0.30 % > MethodChangeRecord 431 28325 679800 0.30 % > Metaclass 6486 10340 579040 0.20 % > InstanceVariableSlot 971 14344 573760 0.20 % > ProtocolOrganizer 3018 22422 538128 0.20 % > FixedLayout 271 22359 536616 0.20 % > MessageSend 2647 16721 535072 0.20 % > > I noticed that the saved image is now always the size of: 280245832 > > Strange â¦.? > > Thanks, > > Dario > >> >> I'm responsible to help getting information about system space usage. The information I compute is represented by a spaceTallyItem >> >> try something like: >> >> ((SpaceTally new spaceTally: (Array with: TextMorph with: Point)) >> asSortedCollection: [:a :b | a spaceForInstances > b spaceForInstances]) >> >> SpaceTally new systemWideSpaceTally >> >> >> This class has been created from a part of SystemDictionary. It still deserves a nice >> clean, such as using object instead of array having 4 slots. >> >> sd-20 June 2003 >> >> Stef >> >> >>> On 23 Dec 2020, at 14:01, Dario Romano Trussardi <dario.trussardi65(a)gmail.com <mailto:dario.trussardi65@gmail.com>> wrote: >>> >>> Ciao, >>> >>> I am developing a seaside based application in pharo >>> >>> Pharo 8.0.0 >>> Build information: Pharo-8.0.0+build.1141.sha.1b7a8d8203fce2a57794451f555bba4222614081 (64 Bit) >>> >>> Seaside version 3.4.3 >>> Grease Version 1.6.1 >>> Iceberg 1.6.7 >>> >>> The Pharo image size increases continuously and now we are at: >>> >>> 15213731 Dec 23 13:20 Pharo80041-201223D.changes >>> 280245832 Dec 23 13:20 Pharo80041-201223D.image >>> >>> >>> The system begins to be unstable. >>> >>> Until a few days ago, >>> closing all the System Browser windows and saving the image the system resized itself. >>> >>> But now this trick doesn't work either. >>> >>> Any suggestions on how to solve, manage this question? >>> >>> Thanks, >>> >>> Dario >> >> -------------------------------------------- >> StÃ©phane Ducasse >> http://stephane.ducasse.free.fr <http://stephane.ducasse.free.fr/> / http://www.pharo.org <http://www.pharo.org/> >> 03 59 35 87 52 >> Assistant: Aurore Dalle >> FAX 03 59 57 78 50 >> TEL 03 59 35 86 16 >> S. Ducasse - Inria >> 40, avenue Halley, >> Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza >> Villeneuve d'Ascq 59650 >> France >> > -------------------------------------------- StÃ©phane Ducasse http://stephane.ducasse.free.fr / http://www.pharo.org 03 59 35 87 52 Assistant: Aurore Dalle FAX 03 59 57 78 50 TEL 03 59 35 86 16 S. Ducasse - Inria 40, avenue Halley, Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza Villeneuve d'Ascq 59650 France

Dec. 23, 2020

Re: Pharo image size increases continuously

by Dario Romano Trussardi

Ciao, > Hello > > > did you try the SpaceTally to get more information? yes, but it's not that I have clarified the situationâ¦. Here is what was found by: WASpaceStatus Class code space # instances inst space percent Array 4280 572944 74716632 31.80 % ByteString 2942 359040 32288104 13.80 % CompiledMethod 25860 152506 14457352 6.20 % Association 1583 486570 11677680 5.00 % WeakArray 1840 75151 9605160 4.10 % ByteArray 14932 1066 9317528 4.00 % Bitmap 4637 9794 8178584 3.50 % WeakFinalizerItem 922 113763 4550520 1.90 % ByteSymbol 1920 117402 4019072 1.70 % MethodDictionary 3460 24188 3978168 1.70 % WeakKeyAssociation 1404 114080 2737920 1.20 % Point 10095 112123 2690952 1.10 % OrderedCollection 7202 77766 2488512 1.10 % IdentitySet 408 99525 2388600 1.00 % WeakOrderedCollection 61 69063 2210016 0.90 % OmReference 1018 91812 2203488 0.90 % MorphExtension 4141 15672 2006016 0.90 % ExternalAddress 4195 113064 1809024 0.80 % RGMethodDefinition 10471 27318 1748352 0.70 % Dictionary 10055 71603 1718472 0.70 % DateAndTime 16976 38843 1553720 0.70 % IdentityDictionary 381 54273 1302552 0.60 % Set 3439 53877 1293048 0.60 % ScaledDecimal 4318 36765 1176480 0.50 % MCMethodDefinition 5085 17919 1146816 0.50 % Protocol 3226 45742 1097808 0.50 % Context 29456 16704 1074488 0.50 % Duration 6626 42444 1018656 0.40 % BlockClosure 14186 30815 1006304 0.40 % ClassOrganization 5502 22422 896880 0.40 % MorphEventSubscription 1207 22256 890240 0.40 % Rectangle 12732 36139 867336 0.40 % TableLayoutProperties 1626 5631 765816 0.30 % RBMessageNode 8768 11663 746432 0.30 % OmEntry 707 30681 736344 0.30 % AllProtocol 689 22422 717504 0.30 % SpValueHolder 857 22005 704160 0.30 % MethodChangeRecord 431 28325 679800 0.30 % Metaclass 6486 10340 579040 0.20 % InstanceVariableSlot 971 14344 573760 0.20 % ProtocolOrganizer 3018 22422 538128 0.20 % FixedLayout 271 22359 536616 0.20 % MessageSend 2647 16721 535072 0.20 % I noticed that the saved image is now always the size of: 280245832 Strange â¦.? Thanks, Dario > > I'm responsible to help getting information about system space usage. The information I compute is represented by a spaceTallyItem > > try something like: > > ((SpaceTally new spaceTally: (Array with: TextMorph with: Point)) > asSortedCollection: [:a :b | a spaceForInstances > b spaceForInstances]) > > SpaceTally new systemWideSpaceTally > > > This class has been created from a part of SystemDictionary. It still deserves a nice > clean, such as using object instead of array having 4 slots. > > sd-20 June 2003 > > Stef > > >> On 23 Dec 2020, at 14:01, Dario Romano Trussardi <dario.trussardi65(a)gmail.com <mailto:dario.trussardi65@gmail.com>> wrote: >> >> Ciao, >> >> I am developing a seaside based application in pharo >> >> Pharo 8.0.0 >> Build information: Pharo-8.0.0+build.1141.sha.1b7a8d8203fce2a57794451f555bba4222614081 (64 Bit) >> >> Seaside version 3.4.3 >> Grease Version 1.6.1 >> Iceberg 1.6.7 >> >> The Pharo image size increases continuously and now we are at: >> >> 15213731 Dec 23 13:20 Pharo80041-201223D.changes >> 280245832 Dec 23 13:20 Pharo80041-201223D.image >> >> >> The system begins to be unstable. >> >> Until a few days ago, >> closing all the System Browser windows and saving the image the system resized itself. >> >> But now this trick doesn't work either. >> >> Any suggestions on how to solve, manage this question? >> >> Thanks, >> >> Dario > > -------------------------------------------- > StÃ©phane Ducasse > http://stephane.ducasse.free.fr <http://stephane.ducasse.free.fr/> / http://www.pharo.org <http://www.pharo.org/> > 03 59 35 87 52 > Assistant: Aurore Dalle > FAX 03 59 57 78 50 > TEL 03 59 35 86 16 > S. Ducasse - Inria > 40, avenue Halley, > Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza > Villeneuve d'Ascq 59650 > France >

Dec. 23, 2020

Re: About BitBlt for non graphical problems

by StÃ©phane Ducasse

I do not have your answer but I see that you are having funâ¦ :) Continue. Iâm playing with VM implementation for the exact same reason :) > On 21 Dec 2020, at 10:56, Rafael Luque <rafael.luque.leiva(a)gmail.com> wrote: > > Hi all, > > I remember to read in the Blue Book about a Game Of Life solution based on the BitBlt operation. I wondered if it was only a smart and elegant demonstration or it may be a useful tool in the case you need parallelism, even in non-graphical contexts. I've never seen BitBlt used to solve non-graphical problems, but I don't have experience with BitBlt in my everyday work, so maybe I'm biased. > > I've found a paper by Leo J. Guibas and Jorge Stolfi (https://www.cs.tufts.edu/~nr/cs257/archive/leo-guibas/language-bitmap.pdf <https://www.cs.tufts.edu/~nr/cs257/archive/leo-guibas/language-bitmap.pdf>) about a "calculus of bitmap operations" including an specific language called MUMBLE, but I suspect it is not a common use case. > > Anyway, I've experimented with this option to solve the Advent of Code's Day 3 challenge. The puzzle consists of counting the number of trees you will encounter traversing a given map with open squares and trees, starting at the top-left corner and following a certain slope ((https://adventofcode.com/2020/day/3 <https://adventofcode.com/2020/day/3>). > > After implementing the straight-forward and iterative solution, I tried using Form instances representing the map and the slope and a BitBlt operation for ANDing both forms in order to leave only bits where you encounter a tree (see attached image). In this alternative solution I like how the iteration is replaced by only one "BitBlt>>copyBits" operation. Additionally, I understand that BitBlt operations are native primitives that could be hardware optimized. > > However, I didn't know how to count the resulting bits without recurring again to the iteration of the Form's bits. This is my current implementation: > > AoCBitBltForestMap>>countTreesOnPath > | mapForm | > mapForm := self form. > (BitBlt toForm: mapForm) > copyForm: self slopeMaskForm > to: 0 @ 0 > rule: Form and. > > ^ mapForm bits count: [ :bit | > (Color colorFromPixelValue: bit depth: 32) green > closeTo: 1 > precision: 0.1 ] > > You can find all the sources at the following repository: https://github.com/luque/AdventOfCode2020 <https://github.com/luque/AdventOfCode2020> > > Any comments about BitBlt use cases or this specific puzzle will be of interest for me. > > Thank you. > > > > > <Captura de pantalla 2020-12-21 a las 10.50.26.png> -------------------------------------------- StÃ©phane Ducasse http://stephane.ducasse.free.fr / http://www.pharo.org 03 59 35 87 52 Assistant: Aurore Dalle FAX 03 59 57 78 50 TEL 03 59 35 86 16 S. Ducasse - Inria 40, avenue Halley, Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza Villeneuve d'Ascq 59650 France

Dec. 23, 2020

Re: Pharo image size increases continuously

by StÃ©phane Ducasse

Hello did you try the SpaceTally to get more information? I'm responsible to help getting information about system space usage. The information I compute is represented by a spaceTallyItem try something like: ((SpaceTally new spaceTally: (Array with: TextMorph with: Point)) asSortedCollection: [:a :b | a spaceForInstances > b spaceForInstances]) SpaceTally new systemWideSpaceTally This class has been created from a part of SystemDictionary. It still deserves a nice clean, such as using object instead of array having 4 slots. sd-20 June 2003 Stef > On 23 Dec 2020, at 14:01, Dario Romano Trussardi <dario.trussardi65(a)gmail.com> wrote: > > Ciao, > > I am developing a seaside based application in pharo > > Pharo 8.0.0 > Build information: Pharo-8.0.0+build.1141.sha.1b7a8d8203fce2a57794451f555bba4222614081 (64 Bit) > > Seaside version 3.4.3 > Grease Version 1.6.1 > Iceberg 1.6.7 > > The Pharo image size increases continuously and now we are at: > > 15213731 Dec 23 13:20 Pharo80041-201223D.changes > 280245832 Dec 23 13:20 Pharo80041-201223D.image > > > The system begins to be unstable. > > Until a few days ago, > closing all the System Browser windows and saving the image the system resized itself. > > But now this trick doesn't work either. > > Any suggestions on how to solve, manage this question? > > Thanks, > > Dario -------------------------------------------- StÃ©phane Ducasse http://stephane.ducasse.free.fr / http://www.pharo.org 03 59 35 87 52 Assistant: Aurore Dalle FAX 03 59 57 78 50 TEL 03 59 35 86 16 S. Ducasse - Inria 40, avenue Halley, Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza Villeneuve d'Ascq 59650 France

Dec. 23, 2020

Re: subclassResponsibility

by Jimmie Houchin

I didn't thinks so, but was not sure. I have not done much with Abstract classes. I will have to think about that and its design implications. Thanks for the suggestion. Jimmie On 12/22/20 8:01 PM, Richard Sargent wrote: > Is there a way force allSubclasses to implement the method? > > No. Pretty much, you need to avoid subclassing concrete classes. > i.e. if A has subclasses B and C, refactor to create an abstract A' and move > A to be a leaf subclass of A'. > > -----Original Message----- > From: Jimmie Houchin [mailto:jlhouchin@gmail.com] > Sent: December 22, 2020 15:08 > To: Any question about pharo is welcome > Subject: [Pharo-users] subclassResponsibility > > Hello, > > I have created a class which will have many subclasses some of which will > have subclasses of their own. > > I want every single class to implement a class method #shortName which will > provide a short string as a human readable short identifier to the object. > > I have in the highest superClass > > > shortName > > Â Â Â self subclassResponsibility > > > But the moment I implement it in a subclass which has subclasses. Those > subclasses are now using their closest superClasses implementation. > > Is there a way force allSubclasses to implement the method? > > > Thanks. > > > Jimmie

Dec. 23, 2020

Pharo image size increases continuously

by Dario Romano Trussardi

Ciao, I am developing a seaside based application in pharo Pharo 8.0.0 Build information: Pharo-8.0.0+build.1141.sha.1b7a8d8203fce2a57794451f555bba4222614081 (64 Bit) Seaside version 3.4.3 Grease Version 1.6.1 Iceberg 1.6.7 The Pharo image size increases continuously and now we are at: 15213731 Dec 23 13:20 Pharo80041-201223D.changes 280245832 Dec 23 13:20 Pharo80041-201223D.image The system begins to be unstable. Until a few days ago, closing all the System Browser windows and saving the image the system resized itself. But now this trick doesn't work either. Any suggestions on how to solve, manage this question? Thanks, Dario

Dec. 23, 2020

Re: subclassResponsibility

by Richard Sargent

Is there a way force allSubclasses to implement the method? No. Pretty much, you need to avoid subclassing concrete classes. i.e. if A has subclasses B and C, refactor to create an abstract A' and move A to be a leaf subclass of A'. -----Original Message----- From: Jimmie Houchin [mailto:jlhouchin@gmail.com] Sent: December 22, 2020 15:08 To: Any question about pharo is welcome Subject: [Pharo-users] subclassResponsibility Hello, I have created a class which will have many subclasses some of which will have subclasses of their own. I want every single class to implement a class method #shortName which will provide a short string as a human readable short identifier to the object. I have in the highest superClass shortName Â Â Â self subclassResponsibility But the moment I implement it in a subclass which has subclasses. Those subclasses are now using their closest superClasses implementation. Is there a way force allSubclasses to implement the method? Thanks. Jimmie

Dec. 23, 2020

Re: [exercism bowling challenge] Is there a better way to do this

by Richard O'Keefe

Yes, there is a better way to do it. I found this particular problem at the Programming Praxis web site, which took it from http://butunclebob.com/ArticleS.UncleBob.TheBowlingGameKata This is a superb example of how an informal specification and a set of test cases can diverge. The specification says to score a bowling game according to a particular set of rules. Here is exactly the algorithm called for, written in the functional programming language Haskell: score (10:b:c:xs) = b+10+c+(if null xs then 0 else score (b:c:xs)) score (a:b:c:xs) | a+b = 10 = 10+c+(if null xs then 0 else score (c:xs)) score (a:b:xs) = a+b+(if null xs then 0 else score xs) That's *it*. Explanation, (10:b:c:xs) means "a sequence starting with 10, followed by something (call it b), followed by something (call it c), followed by the rest of the sequence (call that xs). This is actually strictly statically typed as well. And it shows the while the data are *provided* from first to last, the score is most easily *computed* from last to first. Let's remind ourselves of Kent Beck's four rules of good code: 1. Runs all the tests 2. Contains no duplication 3. Expresses all the important design intentions 4. Minimizes entities (e.g. classes and methods). Hence the Extreme Programming slogan "You Ain't Gonna Need It." Now we come to the divergence between the specification (which calls for #roll: and #score methods) and the tests (which call for a #scoreAfterRolling: method and then in test 15 calls for #scoreRolling:after:). There are two kind of test case for this exercise. + check that the result is correct in a good case - check that the right error is raised given bad data. Now the second kind go far beyond the informal specification and require not only that certain errors be detected but *when* they are detected. And this is something you have to bear in mind when writing down your test cases: you have to prevent ideas you may have about *how* the code might work creeping into your test cases and forcing the code to work that way. Most of my code, and most of the trouble I had writing the code, was about these "does it report the right error at the right time and oh yeah I made up these 'right' definitions with no warrant in the customer's requirements" test cases. I mean, seriously, NO methods in common between the specifications and tests? Returning to Kent Beck's maxims. How many classes do we need? The test code calls for ONE class, "Bowling". There are no tests for any Frame pr Roll classes, and no need for any. How many methods does it need? The test code checks #scoreAfterRolling and #scoreRolling:after: There are not tests for any others. What state should the instances of the class hold? There is hint You will need to store some game state. but that applies to the #roll:/#score interface, NOT to the interface that's actually tested. Use as many classes and methods as you NEED, but remember that you need a lot fewer than you think, On Mon, 21 Dec 2020 at 23:05, r.wobben--- via Pharo-users < pharo-users(a)lists.pharo.org> wrote: > Hello, > > > To come back at this one. > > I made a class Bowling and a class Frame which contains two instance > variables named firstThrow and secondThrow. > > > but I still wonder how do I know which one to fill in. > > I can do ` (firstThrow nil?) ` but that feels not right. > > > Is there a more idiomatic solution for this ? > > > Roelof > > >

Dec. 23, 2020

subclassResponsibility

by Jimmie Houchin

Hello, I have created a class which will have many subclasses some of which will have subclasses of their own. I want every single class to implement a class method #shortName which will provide a short string as a human readable short identifier to the object. I have in the highest superClass shortName Â Â Â self subclassResponsibility But the moment I implement it in a subclass which has subclasses. Those subclasses are now using their closest superClasses implementation. Is there a way force allSubclasses to implement the method? Thanks. Jimmie

Dec. 22, 2020

Re: How coverage is computed with SmalltalkCI and coverall

by Gabriel Cotelli

Just in case you don't find out, the wrapping is done in *SCICoverageWrapper* in SmalltalkCI-Coverage-Core package. If Pharo provides some native facility to calculate code coverage it should be pretty easy to adapt smalltalkCI to use it (if it will work at the method level). In case the coverage strategy is more focused like branch or statement based it will require a bit of change on smaltalkCI reporting support. On Sun, Dec 20, 2020 at 3:52 PM StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: > Ok I could not see the MW or methods as object use but now I get it. > So the granularity is already good. > > I would really like the support for coverage in Pharo ecosystem and not > only on build system. > I would really like that we push tests to the next level :). > > S > > On 20 Dec 2020, at 19:08, BenoÃ®t Verhaeghe <badetitou(a)gmail.com> wrote: > > First, configuration looks for classes and packages ( look at > .smalltalk.ston file ) > Second, you take all the methods inside the classes and packages. > If a method is an extension ( for instance, method A of class C is under > package P. But class C is under package P2), then select all the methods of > the class of the method ( this logic is under discussion in two issues of > SmallTalkCI. > > Third, SmallTalkCI wraps each method ( install a wrapper in the method's > class that is called instead of the real method ). > When a wrapper is called, marks a Boolean to true, and calls the original > method. > > Finally, the coverage is the number of covered methods marked as true > compare to the total number of covered method. > > ( Note : the wrapping is not done using reflectivity whereas it can be a > good idea ? ) > > > > Le dim. 20 dÃ©c. 2020 Ã 18:29, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> > a Ã©crit : > >> Thanks I could not find it. >> I read the code and it is still unclear what is the logic. I could not >> figure out what we get lines here. >> >> I would like to resurrect the AST interpreter to get some information on >> AST level coverage. >> What is see is that so far this is a heuristic that is used in >> SmalltalkCI. >> >> S. >> >> On 20 Dec 2020, at 13:27, Gabriel Cotelli <g.cotelli(a)gmail.com> wrote: >> >> AFAIR is implemented in >> https://github.com/hpi-swa/smalltalkCI/tree/master/repository/SmalltalkCI-P… >> and it's superclass. >> >> On Sun, Dec 20, 2020, 05:44 StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> >> wrote: >> >>> Hi >>> >>> I would like to know exactly how the test coverage is computed. >>> I read all the code of SmalltalkCi and I could not find it. >>> >>> S. >>> -------------------------------------------- >>> StÃ©phane Ducasse >>> http://stephane.ducasse.free.fr / http://www.pharo.org >>> 03 59 35 87 52 >>> Assistant: Aurore Dalle >>> FAX 03 59 57 78 50 >>> TEL 03 59 35 86 16 >>> S. Ducasse - Inria >>> 40, avenue Halley, >>> Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza >>> Villeneuve d'Ascq 59650 >>> France >>> >>> >> -------------------------------------------- >> StÃ©phane Ducasse >> http://stephane.ducasse.free.fr / http://www.pharo.org >> 03 59 35 87 52 >> Assistant: Aurore Dalle >> FAX 03 59 57 78 50 >> TEL 03 59 35 86 16 >> S. Ducasse - Inria >> 40, avenue Halley, >> Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza >> Villeneuve d'Ascq 59650 >> France >> >> > -------------------------------------------- > StÃ©phane Ducasse > http://stephane.ducasse.free.fr / http://www.pharo.org > 03 59 35 87 52 > Assistant: Aurore Dalle > FAX 03 59 57 78 50 > TEL 03 59 35 86 16 > S. Ducasse - Inria > 40, avenue Halley, > Parc Scientifique de la Haute Borne, BÃ¢t.A, Park Plaza > Villeneuve d'Ascq 59650 > France > >

Dec. 21, 2020