February 2016 - Pharo-users

How to generate "Content-Type: application/octet-stream" with Zinc client
by chicoary Feb. 11, 2016

Feb. 11, 2016

I thank in advance if anyone can help me. The code below: ZnClient new url: 'http://127.0.0.1:5001/add?stream-channels=true'; addPart: (ZnMimePart fieldName: 'file' fileNamed: 'file.txt'); post. generates the following response using netcat: nc -l 5001 POST /add?stream-channels=true HTTP/1.1 User-Agent: Zinc HTTP Components 1.0 Content-Length: 194 Host: 127.0.0.1:5001 Content-Type: multipart/form-data;boundary=Boundary-Zn-IDMNDZTQ Accept: */* --Boundary-Zn-IDMNDZTQ Content-Disposition: form-data;name="file";filename="file.txt" Content-Length: 16 Content-Type: text/plain;charset=utf-8 file.txt content --Boundary-Zn-IDMNDZTQ-- however I would like to get: nc -l 5001 POST /add?stream-channels=true HTTP/1.1 User-Agent: Zinc HTTP Components 1.0 Content-Length: 194 Host: 127.0.0.1:5001 Content-Type: multipart/form-data;boundary=Boundary-Zn-IDMNDZTQ Accept: */* --Boundary-Zn-IDMNDZTQ Content-Type: application/octet-stream Content-Disposition: form-data;name="file";filename="file.txt" Content-Length: 16 Content-Type: text/plain;charset=utf-8 file.txt content --Boundary-Zn-IDMNDZTQ-- I not figured out how to get the extra line "Content-Type: application / octet-stream" using Zinc. ----- http://chicoary@gmail.com -- View this message in context: http://forum.world.st/How-to-generate-Content-Type-application-octet-stream… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Re: [Pharo-users] Huge image
by Dale Henrichs Feb. 11, 2016

Feb. 11, 2016

David, I don't have a direct solution, but I have been playing with an analysis technique for solving this particular type of problem: scads of Strings and a need to "make sense of the reference graph". If you look at this example[1], you'll see that there are 202K instances of String (this example is from a GemStone db). the nodes pointing to the String node, show that of the 202K strings, there are 70K instances of Array referencing one or more of the 202k strings; 47K instances of MCVersionInfo and 43K MethodVersionRecord instances. I've found that this approach can help you understand why you have so many strings ... The basic technique is to gather the instances of String, then for each instance of string, gather the collection of objects that reference the String instance and summarize the reference by class instance count and keep an IdentitySet of the instances referencing Strings by class so that you can build the next level of references .... For GemStone, this information is displayed using Roassal2 and the calculations are done by scanning a backup of the repository... You could probably brute force calculate this in Pharo (be sure to isolate the objects that you are using in your analysis from the set of objects being analyzed otherwise things get out of control ... HTH, Dale [1] https://github.com/dalehenrich/obex#class-instance-counts-based-on-selected…

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Re: [Pharo-users] [Bulk] smalltalk banner or poster for FOSSASIA conference.
by HernÃ¡n Morales Durand Feb. 10, 2016

Feb. 10, 2016

Hi Martin, Last year there was a poster made by Adam adam(a)234.cz I don't know if that fits your goals, the poster license or if he's still around, maybe you could check with him if there's an update. Cheers, HernÃ¡n 2016-02-06 11:21 GMT-03:00 Martin BÃ¤hr <mbaehr(a)email.archlab.tuwien.ac.at>: > hi, > > as i have been working on smalltalk projects within FOSSASIA for Google > Summer > of Code and Google Code-In, as well as run smalltalk workshops at the > FOSSASIA > conference, i have been invited to run a small booth and put up a banner > about > smalltalk. > > details about the conference are here: http://2016.fossasia.org/ > > since time is short, i wonder if a banner design for pharo already exists, > that > i could use. alternatively, a poster, that can be stretched, or two > posters on > top of each other. if there is nothing ready, maybe the design that was > posted > to the list most recently can be stretched into a banner. > > my workshop this year will be using roassal, so something about that would > also > work, or other smalltalk topics, like squeak, etoys, etc... > > it would of course also be nice to meet other smalltalkers in singapore > next > month. > > greetings, martin. > > -- > eKita - the online platform for your entire academic > life > -- > chief engineer > eKita.co > pike programmer pike.lysator.liu.se caudium.net > societyserver.org > secretary > beijinglug.org > mentor > fossasia.org > foresight developer foresightlinux.org > realss.com > unix sysadmin > Martin BÃ¤hr working in china > http://societyserver.org/mbaehr/ > >

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RÃ©p: How to display Dictionary using TreeModel
by julien Feb. 10, 2016

Feb. 10, 2016

Hi, try something like: tm := TreeModel new. tm roots: yourCollection. tm hasChildrenBlock: [ :item | item isDictionnary ]. tm childrenBlock: [ :item | item keysAndValues ]. I wrote that from my phone but I think it is working. Else it shows you the idea :) Julien Khrystyna Mykhailiuk <chrismihaylyk(a)gmail.com> a Ã©critÂ : >Hi, all! > >I have OrderedCollection of Dictionaries and I want to display content of >each Dictionary using TreeModel. >I wrote these code, but it doesn't work correctly. And I get some errors. > >mt := TreeModel new. >mt roots: (collectionFirst select: OrderedCollection new); >childrenBlock: [ :item | item ]. >mt openWithSpec. > >(This is screenshot of my work) ><http://forum.world.st/file/n4876653/ScreenPharoTreeModel.png> > >I need to show each pair of Dictionary in new node. > >Can you help me, please? > > > >-- >View this message in context: http://forum.world.st/How-to-display-Dictionary-using-TreeModel-tp4876653.h… >Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >

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Huge image
by Davide Varvello Feb. 10, 2016

Feb. 10, 2016

Guys, I've a bloated image and I don't know why it's so huge and how to shrink it. It happened that my image has grown from 50MB to 440MB in a morning. I've already followed these suggestions https://github.com/pharo-project/pharo-core/wiki/Memory-Hogs and flushing monticello repos the image reduced itself to 219MB, better. Anyway I don't know how to reduce it more. Evaluating: SmalltalkImage current reportCPUandRAM I found you can see ByteStrings occupy 85.5% of space! I tried to inspect instances of ByteString, but I can't find anything worth of. If I Open pointers to the instance I find references to GLMPanePort, GLMPane and NodeModel (see attached png) I'm on Pharo 4 TIA Davide <http://forum.world.st/file/n4876854/huge_image.png> -- View this message in context: http://forum.world.st/Huge-image-tp4876854.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Spec #focusOrder
by Julien Delplanque Feb. 10, 2016

Feb. 10, 2016

Hi, I am trying to manage the focus order of my widget that uses sub-widgets with their #focusOrder defined. How do spec manage nested focus order? I see in the implementation that it is simply an OrderedCollection. I does not behave as I expected, when I add my sub-widgets to the focus order, the focus is given to the first sub-widget and I can not access the second sub-widget using tabulation. For example lets imagine WidgetA contains 2 buttons and WidgetB contains 2 buttons. I can only access the two buttons of WidgetA using tabulation. How can I deal with that? Thanks in advance, Julien

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state of pharo on tablets
by Peter UhnÃ¡k Feb. 10, 2016

Feb. 10, 2016

Hi, does anyone knows what is the current state of Pharo on tablets / state of touchscreen? I'm considering buying a new tablet and I would like to play with Pharo there, if that is currently possible (I've seen some videos, but I am not sure if that was special hardware or whatnot). So are tablets supported? Android? Windows (10)? Thanks, Peter

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Skipping to a substring in a stream
by Leonardo Silva Feb. 9, 2016

Feb. 9, 2016

Hi, I'd like to skip to a specific position in a stream based on a substring. I got the following example that works for a single character: stream := 'abcdef' readStream. stream skipTo: $e. stream next. -â $f But it does not work for substrings. I'd like to have something like: stream := 'abcdef' readStream. stream skipTo: 'de'. stream next. -â "But this returns nil" Do you know how to do it? Thanks, Leonardo

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how to add a class via programatic refactoring
by Tudor Girba Feb. 9, 2016

Feb. 9, 2016

Hi, I would like to create a class with instance variables and methods using RB, and preview the changes with the changes browser. I know how to create AddClass, AddInstanceVariable, AddMethod refactorings individually and query for their changes. For example: (RBAddClassRefactoring addClass: #SomeClass superclass: #Object subclasses: {} category: #Category) primitiveExecute; changes. (RBAddInstanceVariableRefactoring variable: 'x' class: #SomeClass) primitiveExecute; changes My question is: is it possible to create them all in one batch and preview their changes in one single window? Cheers, Doru -- www.tudorgirba.com www.feenk.com "If you interrupt the barber while he is cutting your hair, you will end up with a messy haircut."

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How to display Dictionary using TreeModel
by Khrystyna Mykhailiuk Feb. 9, 2016

Feb. 9, 2016

Hi, all! I have OrderedCollection of Dictionaries and I want to display content of each Dictionary using TreeModel. I wrote these code, but it doesn't work correctly. And I get some errors. mt := TreeModel new. mt roots: (collectionFirst select: OrderedCollection new); childrenBlock: [ :item | item ]. mt openWithSpec. (This is screenshot of my work) <http://forum.world.st/file/n4876653/ScreenPharoTreeModel.png> I need to show each pair of Dictionary in new node. Can you help me, please? -- View this message in context: http://forum.world.st/How-to-display-Dictionary-using-TreeModel-tp4876653.h… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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