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

Finding error in STON string
by Peter UhnÃ¡k July 5, 2015

July 5, 2015

Would be possible for STON to report context for error? For example STON fromString: '[ "first", "second", ]' reports "At character 23: invalid input" which is not very useful especially in longer strings. (at: 23 is actually Character cr) Maybe better would be something like 'At character 23: invalid input near "second", ]' so I already see the surrounding text (this is not perfect, but I find it very common for example to forget comma when moving things around in array. Or even better, allow comma after the last item. (Arguably even JSON (unlike JavaScript) doesn't allow this so maybe it would break stuff.) Peter

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STON wtf parsing
by Peter UhnÃ¡k July 5, 2015

July 5, 2015

How come this passes? STON fromString: '{ "a": "b" }wtf", "x": "y" '. The result is dictionary "a" -> "b". I would expect for it to die on parse error. Peter

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NeoCSVReader and an empty field at the very end of a file
by jtuchel＠objektfabrik.de July 5, 2015

July 5, 2015

Hi there, I am on VA Smalltalk and therefor using an older version of NeoCSV (SvenVanCaekenberghe.14). I found a bug in this old version that is somewhat special. It seems NeoCSV cannot handle the situation where the very last field is just empty AND if there is no trailing CRLF at the end of the file. Somethinng like this: SecondLastColumnValue;;<EOF> In that case, readField fails because it tries to do a readQuotedField or readUnquotedField, both of which try to read beyond EOF. So I changed readField to this: readField ^self atEnd "In case the very last field of a file is empty, like '45;56;;'" ifTrue: [''] ifFalse: [self peekQuote ifTrue: [self readQuotedField] ifFalse: [self readUnquotedField]] and all seems fine so far. Side note: My original file has a trailing CrLf but if I upload it via a browser to a Seaside Server, the Browser cuts off the trailing CrLf (I can see this in the Browser's Network debugging tools - both in IE and FF) - so it seems NeoCSV has to be ready for this situation. Joachim -- ----------------------------------------------------------------------- Objektfabrik Joachim Tuchel mailto:jtuchel@objektfabrik.de Fliederweg 1 http://www.objektfabrik.de D-71640 Ludwigsburg http://joachimtuchel.wordpress.com Telefon: +49 7141 56 10 86 0 Fax: +49 7141 56 10 86 1

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Building a Morphic Card Wall, Part 3: SVG export & WebSocket
by Stephan Eggermont July 4, 2015

July 4, 2015

https://vimeo.com/132548781

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an elegant way to return a result
by abdelghani ALIDRA July 4, 2015

July 4, 2015

Hi guys, what is the best way to express the following :return (something aMsg) if it is not nil, return somethingElse elsewhere I could stil write: something aMsg Â Â Â Â ifNil:[^ something aMsg]Â Â Â Â ifNotNil:[^aNotherResult] but it sounds a little bit weird Regards. Abdelghani

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An Ubuntu-inspired theme for Pharo
by Glenn CavarlÃ© July 4, 2015

July 4, 2015

Hi all, If anyone is interested, i made a small theme inspired by the Ubuntu Ambiance theme : http://smalltalkhub.com/#!/~GlennCavarle/PharoBuntuTheme <http://smalltalkhub.com/#!/~GlennCavarle/PharoBuntuTheme> It is yet under development and if somebody is motivated to contribute, he is welcome ! (I don't have much time to refine it...) Regards, Glenn. <http://forum.world.st/file/n4835632/PharoBuntuTheme.png> ----- Glenn CavarlÃ© -- View this message in context: http://forum.world.st/An-Ubuntu-inspired-theme-for-Pharo-tp4835632.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Phratch: Support for Spanish language in the interface
by Offray Vladimir Luna CÃ¡rdenas July 3, 2015

July 3, 2015

Hi, Some teachers are considering to make some field work with Phratch on learning physics by modelling simple real world phenomena (uniform accelerated movement, free fall etc). I downloaded it today and try to change the interface to Spanish, but I couldn't find the proper place to do it. Has Phratch support for a Spanish interface. If not, how difficult will be to provide this and how can we help? Cheers, Offray

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[Ann] DragPanels: Floating palette windows with drag-and-drop in Morphic
by Stephan Eggermont July 3, 2015

July 3, 2015

Morphic offers everything needed to create highly interactive applications in Pharo. It is however, difficult to find out how to actually create those applications. Morphic tutorials provide a starting point, and are not very good at showing how the different features interact and are supposed to be used together. Morph has lots of methods, and some of them are not in the method category where you might expect them. The result is that most Morphs in Pharo do not use much of what Morphic has to offer. Wouldn't it be great if there would be some sample code, showing how Morphic can be used to great effect? Well, here is some code that takes a first step towards that goal. DragPanels shows how to create a floating palette, filled with wells that support dragging a property towards a target. It shows how to combine drag-and drop with click: and context menu actions, and show to give UI feedback when over a well and when holding the mouse down over an element that reacts to click:. You can see the code in action here: https://vimeo.com/131889858 The color panel shows some colors. If you don't set the allowDropBlock, it will work with any morph that responds to #color: (like the world). By clicking on the plus, you can add more colors to the panel. The panel has a context menu to restore the default values. ColorPanel withSevenPaleColors allowDropBlock: [ :source :target | target class = CardMorph ]; openInHand The people panel shows avatars belonging to an email addres. By default it uses gravatar for them, and caches the images. PeoplePanel new defaultValues: #('stephan(a)stack.nl' 'serge.stinckwich(a)gmail.com' 'nicolas.anquetil(a)inria.fr' 'thierry.goubier(a)gmail.com' 'stephane.ducasse(a)inria.fr' 'marcus.denker(a)inria.fr'); allowDropBlock: [ :source :target | target class = CardMorph ]; openInHand When dropping, the dragSource sends #color: resp. #email: to the target by default. By setting the dropSelector of the DragWell this can be overridden. You can try the code by do-ing Gofer new smalltalkhubUser: 'StephanEggermont' project: 'Dragpanels' package: 'DragPanels'; load. It is used in (a work in progress) Gofer new smalltalkhubUser: 'StephanEggermont' project: 'Documentation' package: 'CardsMorphic'; load. Stephan p.s. On the wishlist are - add more color palettes - add a dark theme, refactoring the colors - add a small close cross in the title bar of the palette - define the dropSelector in the panel, not the well - support different sized wells, refactoring the sizes - make the mouseOver rectangle color content dependent - add pharo contributors as an avatar source - add a configuration

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Slow compilation on one of my Windows PCs
by Jan BlizniÄenko July 3, 2015

July 3, 2015

Hello I have a long-term problem with loading of packages. Compilation takes very long time on my Windows PCs. On desktop it takes "only" double amount of time in comparison with linux, but on notebook, it is more than 10 times slower. Desktop has Windows 7 Ultimate 64-bit and notebook PC with Windows 7 Home Premium 64-bit, both have somehow similar specs (4-6 years old dual-core processors on 2,9 and 2,4 GHz), similar software, both have magnetic HDDs. I believe it used to take very long time on my notebook too, but I tried opening Pharo there again and it was somehow OK, but I'm not aware of any major change which could have caused it ... I mean... a lot changes on my PCs, but I can't remember anything which could directly affect it. Following "benchmarks" are both on same (copy paste) of VM - Windows VM 453 from 2015-06-18. Both on clean image 50141. All tested in as much as similar conditions as possible with everything else (possible) turned off. However, it used to be slow like that for a long time on multiple previous VMs and images since I can even remember (which is about a year). [ Gofer new configurationOf: 'Roassal2'; url: 'http://smalltalkhub.com/mc/ObjectProfile/Roassal2/main/'; loadDevelopment. ] timeToRun inspect. Desktop: 386 s. Notebook: 48 s. Linux in VM on notebook: 27 s. |results| results := OrderedCollection new. 20 timesRepeat: [results add: (Float readFrom: [ Object compile: 'a'. ] bench)]. ('compilations per second - avg: ', results average asString, ', min: ', results min asString, ', max: ', results max asString) inspect. Notebook: compilations per second - avg: 217.7153, min: 5.0, max: 247.258 Desktop: compilations per second - avg: 23.1337, min: 19.448, max: 28.155 Linux in VM on notebook: compilations per second - avg: 529.0066600000001, min: 5.0, max: 573.97 I tried turning off antivirus, turning off file indexing, praying to multiple gods, but with no success. I will appreciate any help. Jan -- View this message in context: http://forum.world.st/Slow-compilation-on-one-of-my-Windows-PCs-tp4834668.h… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Re: [Pharo-users] an elegant way to return a result
by abdelghani ALIDRA July 3, 2015

July 3, 2015

Hi, There is also this book : Clean Code: A Handbook of Agile Software Craftsmanship Some of you probably already knew about it, still it is good to recall :) Abdelghani | Â | | Â | | Â | Â | Â | Â | Â | | Clean Code: A Handbook of Agile Software CraftsmanshipBook by Martin Robert C | | | | Afficher sur www.amazon.fr | AperÃ§u par Yahoo | | | | Â | Date: Thu, 02 Jul 2015 07:37:11 +0200 From: Joachim Tuchel <jtuchel(a)objektfabrik.de> To: stepharo <stepharo(a)free.fr> Cc: Any question about pharo is welcome <pharo-users(a)lists.pharo.org> Subject: Re: [Pharo-users] an elegant way to return a result Message-ID: Â Â Â <mailman.312.1435823336.8793.pharo-users_lists.pharo.org(a)lists.pharo.org> Â Â Â Content-Type: text/plain; charset=utf-8 Just found this on twitter: http://www.cs.wm.edu/~denys/pubs/ICSE%2715-BadSmells-CRC.pdf Am 01.07.2015 23:35 schrieb stepharo <stepharo(a)free.fr>: > > I know :D > > Le 1/7/15 15:19, jtuchel(a)objektfabrik.de a ?crit : > > Stef, > > > > you're shooting the wrong man! ;-) The crime was committed in your > > team ;-)))) > > > > See you in Brescia > > > > Joachim > > > > Am 30.06.15 um 19:19 schrieb stepharo: > >> > >> > >> Le 30/6/15 14:39, jtuchel(a)objektfabrik.de a ?crit : > >>> Ah, Okay, you are mentioning the one and only one case in which this > >>> could make sense.... ;-) > >>> > >>> Something like > >>> > >>> stream next ifNil: [^stream next]. > >> > >> so ugly. > >> Please we should not teach how to do exception with blocks :) > >>> > >>> So there may be cases where the two sends do not return the same > >>> result. But that is, of course, not what the OP suggested. > >>> Nevertheless, I was too fast in criticizing ;-) > >>> > >>> I would consider code like that "less easy" to maintain, however. > >>> > >>> Nice thinking Kata ;-) > >>> > >>> Joachim > >>> > >>> > >>> > >>> Am 30.06.15 um 14:22 schrieb Esteban Lorenzano: > >>>> ah yeah :) > >>>> > >>>> I assumed > >>>> > >>>> first "something aMsg" ~= second "something aMsg? > >>>> > >>>> In case is the same, the correct way is as you say: > >>>> > >>>> ^ something aMsg ifNil: [ anotherResult ] > >>>> > >>>> (sorry, he :P) > >>>> > >>>>> On 30 Jun 2015, at 13:43, jtuchel(a)objektfabrik.de wrote: > >>>>> > >>>>> Am 30.06.15 um 13:40 schrieb Peter Uhn?k: > >>>>>> Make sense if there's code in between. > >>>>> not sure what you're saying. I mean, sending the message twice > >>>>> makes sense if you already know the outcome? Hmmm... > >>>>> > >>>>>> something aMsg ifNil:[ ^ something aMsg ]. "yay for guards!" > >>>>>> "much more code" > >>>>>> ^ aNotherResult > >>>>>> > >>>>>> Peter > >>>>> > >>>>> -- > >>>>> ----------------------------------------------------------------------- > >>>>> > >>>>> Objektfabrik Joachim Tuchel mailto:jtuchel@objektfabrik.de > >>>>> Fliederweg 1 http://www.objektfabrik.de > >>>>> D-71640 Ludwigsburg http://joachimtuchel.wordpress.com > >>>>> Telefon: +49 7141 56 10 86 0???????? Fax: +49 7141 56 10 86 1 > >>>>> > >>>>> > >>>> > >>>> > >>> > >>> > >> > >> > >> > > > > > > >

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