- Pharo-users - lists.pharo.org

OrderedCollection as an instance variable

by sergio ruiz

I'm implementing an instance variable as an OrderedCollection, and am doing something idiotic. I have an Artist class. An Artist can have many tracks: tracks ^ tracks ifNil: [ self tracks: OrderedCollection new ] tracks: anObject tracks := anObject Doing something like: a := Artist new. t := Track new. a tracks add: t Gives me the error: Artist(Object)>>doesNotUnderstand: #add: Once I get past that error, which will evaluate `a tracks`, I can run this. I get why it works the second time, but I don't get why it thinks the instance of Artist is the receiver of add: on the first run. Thanks! ---- peace, sergio photographer, journalist, visionary Public Key: http://bit.ly/29z9fG0 #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV http://www.codeandmusic.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

July 24, 2019

Re: [Pharo-users] [OrderedCollection] add a reference or a copy?

by sergio ruiz

Okay. This makes the entire universe make more sense. Thanks! > On Jul 24, 2019, at 9:30 AM, Esteban Maringolo <emaringolo(a)gmail.com> wrote: > > Yes, it is the same. Everything is passed by "reference" (*). > And if you copy the collection you'll get two collections referencing > the same object. ---- peace, sergio photographer, journalist, visionary Public Key: http://bit.ly/29z9fG0 #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV http://www.codeandmusic.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

July 24, 2019

Re: [Pharo-users] [OrderedCollection] add a reference or a copy?

by Esteban Maringolo

Yes, it is the same. Everything is passed by "reference" (*). And if you copy the collection you'll get two collections referencing the same object. E.g. | a c1 c2 | a := Object new. b := OrderedCollection with: a. b identityIncludes: a. "true" c := b copy. c identityIncludes: a. "true" (*) Some objects like SmallIntegers are "immediate" objects, and could be considered that they're passed by value. E.g. 1 copy == 1 "true" Regards, Esteban A. Maringolo On Wed, Jul 24, 2019 at 9:45 AM sergio ruiz <sergio.rrd(a)gmail.com> wrote: > > I think my understanding of OrderedCollections has been incorrect for a very long time. I have never had a situation where it mattered, but in modeling a current project, I think I have been approaching it incorrectly. > > Since I have been using Smalltalk, I assumed that a copy of an object is added to an OrderedCollection. A quick test shows that a reference to that object is added to the OrderedCollection. > > I just wanted a sanity check on this. Is this true with all collections? > > Thanks! > > > ---- > peace, > sergio > photographer, journalist, visionary > > Public Key: http://bit.ly/29z9fG0 > #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV > http://www.codeandmusic.com > http://www.twitter.com/sergio_101 > http://www.facebook.com/sergio101 >

July 24, 2019

[OrderedCollection] add a reference or a copy?

by sergio ruiz

I think my understanding of OrderedCollections has been incorrect for a very long time. I have never had a situation where it mattered, but in modeling a current project, I think I have been approaching it incorrectly. Since I have been using Smalltalk, I assumed that a copy of an object is added to an OrderedCollection. A quick test shows that a reference to that object is added to the OrderedCollection. I just wanted a sanity check on this. Is this true with all collections? Thanks! ---- peace, sergio photographer, journalist, visionary Public Key: http://bit.ly/29z9fG0 #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV http://www.codeandmusic.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

July 24, 2019

Transcript had a 1.25GB WriteStream - maybe a bug with clearing the Transcript?

by PAUL DEBRUICKER

Hi - On Pharo 7.1 64bit mac mojave. My images grew to 1.4GB, so I ran ImageCleaner cleanUpForRelease. Smalltalk cleanUp. Smalltalk reportCPUAndRAM. to begin to track down why & I found that I had 1.3 GB of ByteStrings. (ByteString allInstances select:[:ea | ea size >1000]) sorted:[:a :c | a size > c size] gave me a list of 1174 strings. running self collect:[:ea | ea size] showed me that the first one in the list is 1245704483 characters long. And the next biggest one is 520714 (that one is the highchartsJS library stored in a MCMethodDefinition) John Brant's ReferenceFinder & the "Open pointers to" shows that the very long String is the collection of the Transcript's stream. The only thing that got rid of the big string was running Transcript initialize. 10 timesRepeat:[Smalltalk garbageCollect]. Then saving/closing/reopening the image. I had always assumed that when you delete the contents of the Transcript, by selecting everything in it and deleting it ,it was all deleted. Or when running Transcript clear Or one of the "clean up" methods like those above. Anyway. It seems like the stream should clear more often than it does (looks like it may never empty itself? I don't think there is code in the image that does that though. WriteStream>>#reset & WriteStream>>#close do not empty the #collection or #stepContents inst vars. And it doesn't look like there is a method to empty/re-initailze those inst vars defined in the Stream hierarchy in 7.1 or 8.0. I made an issue https://github.com/pharo-project/pharo/issues/4074

July 23, 2019

Re: [Pharo-users] [ANN] Pharo TechTalk July 18th

by Marcus Denker

Hi, There is now a recording available: https://www.youtube.com/watch?v=90T0OSb_Fuo <https://www.youtube.com/watch?v=90T0OSb_Fuo> > On 17 Jul 2019, at 09:22, Marcus Denker <marcus.denker(a)inria.fr> wrote: > > This is tomorrow > >> On 11 Jul 2019, at 11:33, Marcus Denker <marcus.denker(a)inria.fr> wrote: >> >> A regular chat about Pharo. Happens on Discord. >> >> Topic: How to report and fix bugs for Pharo. In a live coding session, we will together have a look at some simple fixes for Pharo8 and learn how to report bugs and do Pull Requests. >> >> - We will send an information to all subscribers of this event some hours before the talk starts. >> - Or just hangout in Discord, we post everything there, too >> >> https://association.pharo.org/event-3419542 >

July 23, 2019

Re: [Pharo-users] Testing "Weekly Digest" for GitHub

by Marcus Denker

> On 17 Jul 2019, at 07:46, Marcus Denker <marcus.denker(a)inria.fr> wrote: > > Hi, > > This seems to have been caused by a faulty config (I really hate YAMLâ¦). > > I changed it *and* put the day to be saturday, as they seem to have run into rate limiting > for the API on Sundays in the past. > > So hopefully this will work saturday again. > I finally remove the config file and deinstalled/reinstalled the bot. https://github.com/pharo-project/pharo/issues/4024 "Last week, 64 pull requests were merged.â Marcus

July 23, 2019

Re: [Pharo-users] where are system settings stored?

by Dale Henrichs

On 7/22/19 10:30 AM, Cyril Ferlicot wrote: > FileLocator preferences asFileReference Thanks Cyril ... I get `File @ /home/dhenrich/.config` and there is a pharo directory with some stuff in it ... poking around it seems that the system settings are in a pharo/7.0 subdirectory with a system-settings.ston file, that when catted looks like the following: which is of course due to the fact that the file is using CR instead of LF ... After replacing CR's with LF's, there are a bunch of places where gci_70_tst show up in the system-settings.ston file and each of those places is an absolute path ... which seems to indicate that I will have to be creative when trying to share an image file with different users to run as a pre-built application ... Thanks again, Cyril ... This is the pointer that I needed ... I had no clue that pharo was stashing stuff in .config and that I was using a local-cache directory that was magically created over 6 months ago:) I will start pulling on this thread and see where it takes me:) Dale

July 22, 2019

Re: [Pharo-users] Playground auto-save?

by Offray Vladimir Luna CÃ¡rdenas

Hi Hilaire, I imagine that you can use Grafoscopio from DrGeo, in the sense that you can have both installed in the same image and use Grafoscopio to organize and save playgrounds that have DrGeo code scripts made by your students, that they save when necessary. I tried to install DrGeo, but the installation script failed. This was my (not working) procedure: Â - Create a new image from Pharo launcher called DrGeo. Â - Install bazaar. Â - Went to the root folder where the DrGeo image is located. Â - Ran `bzr branch lp:drgeo` Â - Ran http://ws.stfx.eu/1MWID38XGAO9 Â - Got "Error: Instances of UndefinedObject are not indexable" So you could test it by yourself by installing Grafoscopio in a working copy of DrGeo and let me know who it works. By the way, there is any form to install DrGeo without cloning the local repository and using tonel from a local directory? Maybe something that publish DrGeo repo also to SmalltalkHub while more DVCS are supported in Iceberg? Cheers, Offray On 20/07/19 11:49 a.Â m., Hilaire wrote: > Hi Offray, > > Can I use it from DrGeo because this is what I need to do with my > students? If you can try out Grafoscopio+DrGeo I am all eyes opened (tip > to install on P7 [1]) > > The *elementary* needed feature: student write code as script, student > save code when necessary. > > Nevertheless, It is not exactly possible on Pharo. Switching to > Workspace could be an option. It also come with its own usability issue > though. Kid do not forgive approximation, learn the hard way. > > Hilaire > > [1] > https://bazaar.launchpad.net/~drgeo-developers/drgeo/trunk/view/head:/src/I… > > Le 18/07/2019 Ã 23:39, Offray Vladimir Luna CÃ¡rdenas a Ã©critÂ : >> Hi, >> >> You may try to use Grafoscopio [1], so you can save several nested >> and/or sequential playgrounds explicitly as a Grafoscopio notebook. >> >> [1] https://mutabit.com/grafoscopio/index.en.html >> >> I'll be pretty interested in the feedback from you and your >> kids/students and I'm working on improving the Grafoscopio DOM to >> support a better user experience (selected and expanded nodes, warnings >> on unsaved documents and so on). >> >> Cheers, >> >> Offray

July 22, 2019

Re: [Pharo-users] where are system settings stored?

by Cyril Ferlicot

On Mon 22 Jul 2019 at 19:25, Dale Henrichs <dale.henrichs(a)gemtalksystems.com> wrote: > I am currently using Pharo 7.0 and I've just discovered that my "local > directory" is > /home/dhenrich/rogue/_homes/rogue/_home/dev/clients/gci_70_tst/pharo-local: > > > This file has to date back to the beginning of the year and i had deleted > that directory structure a week or so ago before starting on my (totally > unrelated work) and didn't discover the problem until i tried to run an > image created locally up on traivs[1], where this bug[2] manifested itself > and I eventually tracked the source of problem to the "local directory" > setting ... > > Now I would like to know where the pharo settings file is hiding, so that > I can avoid running into this problem in the future ... ... > > I've poked around in the Settings Browser looking for the default location > of the settings file. There's "Store Settings" and "Load Settings", but > nothing that allows me to find out/control the location of the settings > file itself ... > > ... I only got to this point by tracing back from allinstances of > OmSessionStore to a class var where the "directory" was stored and then got > the settings browser by looking at senders ... but now I've run out of > ideas. > > I assume that this is common knowledge, but not quite common enough for > me:) > > Thanks in advance for the help. > Hi Dale, Iâm on phone so I cannot check exactly but you can get the location by executing `FileLocator preferences asFileReference`. > Dale > > > [1] https://travis-ci.org/dalehenrich/st_launcher/builds/561863077#L603 > [2] https://github.com/pharo-project/pharo-launcher/issues/37 > -- Cyril Ferlicot https://ferlicot.fr

July 22, 2019