June 2015 - Pharo-users - lists.pharo.org

right-aligned Spec labels ?

by Hartmut

how 2 right-align a label text in Spec ? I assigned a Text instance to a label with textAlignment rightFlush: self /labelKey/ label: (/key/ asText addAttribute: TextAlignment rightFlush). However, LabelModel ignores the TextAlignment. Can it be done? and how? Thanks -- Hartmut Krasemannâ¨ KÃ¶nigsberger Str. 41 c â¨D 22869 Schenefeldâ¨ Tel. 040.8307097â¨ Mobil 0171.6451283â¨ krasemann(a)acm.org

June 16, 2015

Re: [Pharo-users] NativeBoost nested structures

by Matthieu Lacaton

> > Are you bound to exactly this structure? > If you can define the structure, you can use a nested structure that uses > pointers instead of values: > > NBTestNestedStructure2>> > fieldsDesc > > ^ #( > NBTestStructure1byte* oneByte; > int otherField > ) > > Now you can create and access the innerstructure like this > > myStruct := (NBTestNestedStructure2 new oneByte: (NBTestStructure1byte > externalNew field: 1)). > myStruct oneByte field. " -> 1 " > myStruct oneByte field: 4. > myStruct oneByte field. " -> 4 " > Well I'm not bound to anything really, but what you did here seems nice and should do the trick for me. Initially i just got rid of the second struct and incorporated each element of the second struct inside the first one. I guess if the size they take in memory is the same it should work too. But I'll use your solution cause it looks nicer :) Whereas I don't know if the external memory is freed. > >From what is written in NBExternalStructure it probably isn't but I'll just have to remember to do so. On the other hand, I am curious about the internal mechanisms here. yes, self struct2 will create a copy of the struct2 and any change to > struct2 value only applies to this copy. > If "self struct2" returns a copy it means that even if it is not a struct and simply an int it also returns me a copy right ? However, when you call "self struct2: ..." or "self otherField: ..." it actually modifies the object itself. So why doesn't it let me access the actual object directly ? If I can modify the whole object why can't I modify just a part of it ? What is the inherent issue ?

June 16, 2015

Re: [Pharo-users] breaking infinite loop from saved image

by Peter UhnÃ¡k

I ended up fileouting what I could in headless mode (had utf8 issues for whatever reason so I didn't get it all), and rewriting the rest. :/ But what happens once will happen again... so some more generic solution for this would be nice. Yuriy mentioned Oz, and it looks viable, provided it works with current pharo version and is capable of dealing with (most likely) corrupted memory. However as I personally prefer time traveling over archaeology, I would like having multiple snapshot of the image (10 minutes ago, 20 minutes ago) so if my image gets corrupted I loose at most 10 minutes of time. I can always dig it out, but there is always some work involved (downloading new image, setting it up, downloading work packages, digging out the old changeset, ...). On Tue, Jun 16, 2015 at 8:45 AM, Nicolai Hess <nicolaihess(a)web.de> wrote: > > > Did you try to open (a copy of) the changes file with a new/fresh image? > Or you can use : > > ExternalChangesBrowser openOn:'FULLNAME_OF_OTHER_CHANGES_FILE' > to open a changes browser. > Good to know this is available now (I am still in Pharo 4 tho), but this is still archaeology for me. :) Anyway, I've resolved my current problem, so the question now is how to add some extra fault tolerance. Peter

June 16, 2015

Re: [Pharo-users] breaking infinite loop from saved image

by Nicolai Hess

2015-06-16 7:41 GMT+02:00 phil(a)highoctane.be <phil(a)highoctane.be>: > Gille fixed one of my locked up images with his Oz tooling. > > I'd welcome that thing to be more widely usable. > > No clue about the current state of affairs on that front. > > Phil > > Did you try to open (a copy of) the changes file with a new/fresh image? Or you can use : ExternalChangesBrowser openOn:'FULLNAME_OF_OTHER_CHANGES_FILE' to open a changes browser. nicolai > > On Tue, Jun 16, 2015 at 2:00 AM, Peter UhnÃ¡k <i.uhnak(a)gmail.com> wrote: > >> In moment of my utter brilliance I managed to save image without noticing >> that I have infinite loop running... >> So it obviously crashed and launching is quite problematic. >> I managed to recompile infringing method from a startup script, since it >> seems strangly that it has higher priority, however right after that >> garbage collection kicks in and due to (probably) massive accumulated stack >> it dies again...(it is a nice 875M image -_-) >> ~~~~~~~~~ >> Smalltalk stack dump: >> 0xff916d80 I SmalltalkImage>lowSpaceWatcher 0xb7674470: a(n) >> SmalltalkImage >> 0xf2ae8a2c s [] in SmalltalkImage>installLowSpaceWatcher >> 0xf2ab50e0 s [] in BlockClosure>newProcess >> >> stack page bytes 4096 available headroom 3300 minimum unused headroom 3524 >> >> (out of memory) >> ~~~~~~~~~ >> >> Is there some magic remedy for this? >> >> It seems that there is a small window between starting the image and it >> crashing where I can do some little things; I managed to file out the most >> critical package like this, however I don't know where else I was making >> changes (day-ish of work)... >> >> The loop itself is announcement-based, so maybe that's why there is some >> room for experimenting... >> >> Thanks, >> Peter >> > > > >

June 16, 2015

Re: [Pharo-users] breaking infinite loop from saved image

by phil＠highoctane.be

Gille fixed one of my locked up images with his Oz tooling. I'd welcome that thing to be more widely usable. No clue about the current state of affairs on that front. Phil On Tue, Jun 16, 2015 at 2:00 AM, Peter UhnÃ¡k <i.uhnak(a)gmail.com> wrote: > In moment of my utter brilliance I managed to save image without noticing > that I have infinite loop running... > So it obviously crashed and launching is quite problematic. > I managed to recompile infringing method from a startup script, since it > seems strangly that it has higher priority, however right after that > garbage collection kicks in and due to (probably) massive accumulated stack > it dies again...(it is a nice 875M image -_-) > ~~~~~~~~~ > Smalltalk stack dump: > 0xff916d80 I SmalltalkImage>lowSpaceWatcher 0xb7674470: a(n) SmalltalkImage > 0xf2ae8a2c s [] in SmalltalkImage>installLowSpaceWatcher > 0xf2ab50e0 s [] in BlockClosure>newProcess > > stack page bytes 4096 available headroom 3300 minimum unused headroom 3524 > > (out of memory) > ~~~~~~~~~ > > Is there some magic remedy for this? > > It seems that there is a small window between starting the image and it > crashing where I can do some little things; I managed to file out the most > critical package like this, however I don't know where else I was making > changes (day-ish of work)... > > The loop itself is announcement-based, so maybe that's why there is some > room for experimenting... > > Thanks, > Peter >

June 16, 2015

Re: [Pharo-users] breaking infinite loop from saved image

by Paul DeBruicker

What platform are you on? You can raise the RAM limits the VM allows on a mac by editing the Info.plist file in the vm bundle. By default the limit is set to: <key>SqueakMaxHeapSize</key> <integer>536870912</integer> So maybe if you're on a Mac you can move that up to a larger number and the GC will complete. Hope this helps Paul Peter UhnÃ¡k wrote > In moment of my utter brilliance I managed to save image without noticing > that I have infinite loop running... > So it obviously crashed and launching is quite problematic. > I managed to recompile infringing method from a startup script, since it > seems strangly that it has higher priority, however right after that > garbage collection kicks in and due to (probably) massive accumulated > stack > it dies again...(it is a nice 875M image -_-) > ~~~~~~~~~ > Smalltalk stack dump: > 0xff916d80 I SmalltalkImage>lowSpaceWatcher 0xb7674470: a(n) > SmalltalkImage > 0xf2ae8a2c s [] in SmalltalkImage>installLowSpaceWatcher > 0xf2ab50e0 s [] in BlockClosure>newProcess > > stack page bytes 4096 available headroom 3300 minimum unused headroom 3524 > > (out of memory) > ~~~~~~~~~ > > Is there some magic remedy for this? > > It seems that there is a small window between starting the image and it > crashing where I can do some little things; I managed to file out the most > critical package like this, however I don't know where else I was making > changes (day-ish of work)... > > The loop itself is announcement-based, so maybe that's why there is some > room for experimenting... > > Thanks, > Peter -- View this message in context: http://forum.world.st/breaking-infinite-loop-from-saved-image-tp4832548p483… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

June 16, 2015

breaking infinite loop from saved image

by Peter UhnÃ¡k

In moment of my utter brilliance I managed to save image without noticing that I have infinite loop running... So it obviously crashed and launching is quite problematic. I managed to recompile infringing method from a startup script, since it seems strangly that it has higher priority, however right after that garbage collection kicks in and due to (probably) massive accumulated stack it dies again...(it is a nice 875M image -_-) ~~~~~~~~~ Smalltalk stack dump: 0xff916d80 I SmalltalkImage>lowSpaceWatcher 0xb7674470: a(n) SmalltalkImage 0xf2ae8a2c s [] in SmalltalkImage>installLowSpaceWatcher 0xf2ab50e0 s [] in BlockClosure>newProcess stack page bytes 4096 available headroom 3300 minimum unused headroom 3524 (out of memory) ~~~~~~~~~ Is there some magic remedy for this? It seems that there is a small window between starting the image and it crashing where I can do some little things; I managed to file out the most critical package like this, however I don't know where else I was making changes (day-ish of work)... The loop itself is announcement-based, so maybe that's why there is some room for experimenting... Thanks, Peter

June 16, 2015

Re: [Pharo-users] World lastKeystroke and openInWorld: aPasteUpMorph

by Nicolai Hess

2015-06-11 10:58 GMT+02:00 Markus Schlager <m.slg(a)gmx.de>: > issues opened > I added a fix for the broken lastkeystroke,but this will only work for the ActiveWorld/PasteUpMorph, not for any other PasteUpMorph. With the split of PasteUpMorph in PasteUpMorph and WorldMorph, and the change of keystroke handling (KMDispatcher), there is more to do to make this fully work again - but I don't want to reintroduce the old keyevent handling just to make this work again. I would like to remove all the keystroke handling from PasteUpMorph/WorldMorph and use only KMDispatcher. Maybe there is another(new) way to make this "lastKeystroke"-demo? You can open a transcript and enable the KMLog (KMLog setDebug. Transcript open) It will log all(!) keyevents and print the matching keymapping actions. Or something like this: |m| m := Morph new. m openInWorld. m takeKeyboardFocus. m on:($r ctrl) do:[ m color:Color red]. m on:($g ctrl) do:[ m color:Color green]. m on:($b ctrl) do:[ m color:Color blue]. This will open a morph that changes its color on ctrl+r/g/b So, maybe we can remove the whole "lastKeystroke" handling and make demos/examples like the above one? > > Markus > >

June 15, 2015

Re: [Pharo-users] Status of Twitter (api/analysis/visualization) in Pharo?

by Offray Vladimir Luna CÃ¡rdenas

Hi, We're working on a project that involves retrieve tweets and visualize results using Roassal also. Our approach includes data scraping and is based on the idea that public political discourse in covered under constitutional law which is above Twitters API Terms and Conditions. Is related with data activism and slow data and doesn't use Twitter's API. Scraping is a sensible issue but I think that we're covered by fair use and a lawyer working on digital rights thinks the same. Scraping happens at client level using chrome/chromium, without any use of Pharo for that. Pharo is used for extracting structured information of the tweets and visualizing it. Most of the detailed raw documentation is in Spanish as a product of our local workshops, but you can get and idea of what the project is doing at [1] to see is this approach works for you. [1] http://mutabit.com/offray/static/blog/output/posts/visualizing-politiciansp… Next week we well be doing a week long data visualization workshop [2], so I think that we will have better visualization, scraping algorithms and documentation (in Spanish). I will keep you posted on the general of how our workshop advances and sharing preliminary results. [2] http://mutabit.com/dataweek/ Cheers, Offray On 15/06/15 09:12, MartinW wrote: > Hi, > > I want to do some interaction with the Twitter API (retrieve tweets based on > hashtags mostly) and visualize results of some analyses using Roassal. > > I saw there are some projects on Smalltalkhub, but none has > much/any/up-to-date documentation. What is the current status of these > projects? Does anyone know about any up-to-date documentation or examples? > > I am thankful for all hints. > > Best regards, Martin. > > > > > > -- > View this message in context: http://forum.world.st/Status-of-Twitter-api-analysis-visualization-in-Pharo… > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > >

June 15, 2015

Grapher bug?

by Luc Fabresse

Hi, The doc here [1] says: "Data points may be stacked, meaning that the index of the point in the collection is its X value." When I use the same example as in the doc but with labels and ticks: b := RTGrapher new. ds := RTStackedDataSet new. ds dotShape color: Color red. ds points: #(5 1 20 5). ds y: #yourself. b add: ds. b axisX noDecimal. b axisY noDecimal. b build. b view inspect it seems that y values are not aligned on x ones (i.e. I would expect the first red point to be 1@5). Is it a bug or did I misunderstood something? [image: Images intÃ©grÃ©es 2] [1] https://dl.dropboxusercontent.com/u/31543901/AgileVisualization/Grapher/020… Thanks, #Luc

June 15, 2015