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How to zip a WideString
by PBKResearch Oct. 10, 2019

Oct. 10, 2019

Hello I have a problem with text storage, to which I seem to have found a solution, but it's a bit clumsy-looking. I would be grateful for confirmation that (a) there is no neater solution, (b) I can rely on this to work - I only know that it works in a few test cases. I need to store a large number of text strings in a database. To avoid the database files becoming too large, I am thinking of zipping the strings, or at least the less frequently accessed ones. Depending on the source, some of the strings will be instances of ByteString, some of WideString (because they contain characters not representable in one byte). Storing a WideString uncompressed seems to occupy 4 bytes per character, so I decided, before thinking of compression, to store the strings utf8Encoded, which yields a ByteArray. But zipped can only be applied to a String, not a ByteArray. So my proposed solution is: For compression: myZipString := myWideString utf8Encoded asString zipped. For decompression: myOutputString := myZipString unzipped asByteArray utf8Decoded. As I said, it works in all the cases I tried, whether WideString or not, but the chains of transformations look clunky somehow. Can anyone see a neater way of doing it? And can I rely on it working, especially when I am handling foreign texts with many multi-byte characters? Thanks in advance for any help. Peter Kenny

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Re: [Pharo-users] [Pharo-dev] PhD starting in January/February 2020 on Advanced debugging with Pharo
by ducasse Oct. 10, 2019

Oct. 10, 2019

JB I think that this blog post is not yours. And this is not even ours. It is available. We just listed it here because it was available. Stef > On 10 Oct 2019, at 14:57, jean baptiste arnaud <jbaptiste.arnaud(a)gmail.com> wrote: > > It is really nice to put me as reference here, even if it is without my consent. Whatever I will embrace the charge if someone is interested by conduct a PhD with rmod I will be more than happy to share my experience feedback with them. The good part, they are a lot of them and the bad part, they are some of them. Feel free to contact me. > But please the next time ask me before. > > >

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Spec2 and Gtk3
by Shaping Oct. 9, 2019

Oct. 9, 2019

Is there an ETA for Pharo's Spec2 with Gtk3 bindings? When is the earliest I can test it? Shaping

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[ ANN ] Neo Universal Binary JSON
by Sven Van Caekenberghe Oct. 9, 2019

Oct. 9, 2019

Hi, I just published an implementation of Universal Binary JSON (UBJSON) for Pharo. https://github.com/svenvc/NeoUniversalBinaryJSON Universal Binary JSON (UBJSON) is a computer data interchange format. It is a binary form directly imitating JSON, but requiring fewer bytes of data. It aims to achieve the generality of JSON, combined with being easier and more efficient to process than JSON. http://ubjson.org https://en.wikipedia.org/wiki/UBJSON The size/speed/efficiency differences are minor for typical JSON payloads, especially compared with compacted JSON. The implementation is simpler, though, as there is no string escaping and no number parsing. UBJSON is making a larger difference when dealing with arrays containing numbers. Especially with ByteArrays, UBJSON makes a huge difference, since these are essentially stored natively. Sven

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Number to VT_DECIMAL
by eftomi Oct. 9, 2019

Oct. 9, 2019

Hi, I'm preparing a method to write a given Pharo's numerical value into an external variant of type VT_DECIMAL. The purpose of this type is to retain accuracy, it uses 12 bytes for "mantissa" and two bytes for a sign and a scale (i. e. the position of decimal point). What would be the best approach for the conversion, taken all the possible subclasses of class Number, that is a Float, a Fraction and the Integers, and to keep the accuracy at the same level? For instance, Fraction's numerator and denominator could be directly imputed into VT_DECIMAL's value and scale if denominator is a power of 10. What to do in other cases? A nice description of VT_DECIMAL is here <https://bytecomb.com/vba-internals-decimal-variables-and-pointers-in-depth/> . Best wishes, Tomaz -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

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Pharo: Git and GUI speed; JS widget reuse in PharoJS
by Shaping Oct. 9, 2019

Oct. 9, 2019

Are we sure that Git is really the best way to go? Yes, it's everywhere, but its representation in Iceberg seems awkward or incomplete. I've been able to crash several Pharo VMs with routine repo operations. This is why I backed away recently from Pharo--that and the mush (see below). The other thing that keeps me planted firmly in VW is the sheer speed of it. Pharo looks generally much better, but it's mushy, and that's a problem. VW is not. Gestural dynamics are very quick, well under 100 ms latency, often less than 20 ms. I'm seeing 100, 150, and 200 ms regularly in Pharo. It's too mushy, and that slows the mind. Any developer understands this, whether he talks about it or not. So I'm wondering when the Pharo GUI will snap as well as VW. One thing that would help is to give the option of button-down selection in Settings, but even this is not enough. I tweaked the code, and made it so, but still was not happy: not enough snap and crackle. You may have acclimated and not noticed the problem, depending on how long you've been using Pharo. Otherwise, I like the Pharo DSL idea for JS. I'm working with VW's AppeX now. I'm not sure I like it, but that's mostly about finding JS to be one of the worst languages ever invented. However, the reuse and leverage is there, but at what cost in poor reading/thinking? I'm on the fence with AppeX, but will probably give it a chance. How does PharoJS deal with the JS reuse issue? There are lots of JS widgets out there that we would just like to use, but we don't want to read JS if we don't have to. There are many wheels to reinvent, or at least recode in DSL, if I understand the PharoJS scheme correctly, but I may not. Shaping

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Re: [Pharo-users] [cormas-dev] OpenPonk ported to Pharo 7
by HernÃ¡n Morales Durand Oct. 9, 2019

Oct. 9, 2019

s/ported/loadable/g Guys, you may help me on this one: I suspect some classes in OpenPonk-Spec-Commands are breaking Calypso in Pharo 7 at some point on usage (not really sure, but I need to discard possibilities). Do you know any way to specify conditional loading in a Baseline method? I want to load all OpenPonk-Spec categories except OpenPonk-Spec-Commands. Cheers, HernÃ¡n El mar., 8 oct. 2019 a las 11:03, HernÃ¡n Morales Durand (< hernan.morales(a)gmail.com>) escribiÃ³: > Hi Serge, > > Noy yet sadly, what I did was to make the changes to make OpenPonk just > loadable in Pharo 7. Besides additional needed OpenPonk porting tasks, now > I have to check why Calypso gets broken (unusable) and I have to compile > some methods by hand, for example: > > ClySwitchMethodViewModeCommand compile: 'isAppliedToBrowser > > ^browser methodGroupView showsItemsOfType: self methodGroupType' > > Also it seems Pharo 7 no longer includes a fallback Browser to solve this > type of problems... > Cheers, > > HernÃ¡n > > > > El mar., 8 oct. 2019 a las 5:12, Serge Stinckwich (< > serge.stinckwich(a)gmail.com>) escribiÃ³: > >> >> >> On Tue, Oct 8, 2019 at 4:57 AM HernÃ¡n Morales Durand < >> hernan.morales(a)gmail.com> wrote: >> >>> Hi guys!! >>> >>> Glad to write to you again. >>> >> >> Hi Hernan, >> >> thank you for your commitment. >> >>> It took me some days but now I've had a loadable OpenPonk in Pharo 7 :) >>> >>> " In case of empty Warning windows appearing you can uncomment:" >>> " Smalltalk tools debugger alwaysOpenFullDebugger: true. " >>> [ Metacello new >>> baseline: 'OpenPonk'; >>> repository: 'github://hernanmd/OpenPonk/repository'; >>> load ] >>> on: IceGenericError >>> do: [ : ex | ex retry ]. >>> >>> >> You mean OpenPonk is usable in Pharo 7 ? >> I will give a try. >> Regards, >> -- >> Serge Stinckwic >> h >> >> Int. Research Unit >> on Modelling/Simulation of Complex Systems (UMMISCO) >> Sorbonne University >> (SU) >> French National Research Institute for Sustainable Development (IRD) >> U >> niversity of YaoundÃ© I, Cameroon >> "Programs must be written for people to read, and only incidentally for >> machines to execute." >> https://twitter.com/SergeStinckwich >> >> -- >> You received this message because you are subscribed to the Google Groups >> "cormas-dev" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to cormas-dev+unsubscribe(a)googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/cormas-dev/CAOysuxU92FFtx0i4Og-ak%3DQ3D%2… >> <https://groups.google.com/d/msgid/cormas-dev/CAOysuxU92FFtx0i4Og-ak%3DQ3D%2…> >> . >> >

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keyboard shortcut for switching from "instance side" to "class side"
by Steve Quezadas Oct. 8, 2019

Oct. 8, 2019

Does anyone know of a keyboard shortcut in pharo that switches from the method selectors in the "class side" to the "instance side"? I can't seem to find anything by browsing google. Ctrl-h seems to be an undocumented keystroke command to switch to "heirchy list" when the object in the browser is selected. So I would imagine there would also be something to switch to the class side/instance side. - Steve

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Re: [Pharo-users] How to install stripe library on Pharo 7 64bit ?
by Paul DeBruicker Oct. 7, 2019

Oct. 7, 2019

Oh sorry. I haven't updated the load instructions in a while. I'll edit them there today. Try this instead. Metacello new baseline:'Stripe'; repository: 'http://smalltalkhub.com/mc/pdebruic/Stripe/main'; load:#('Tests' 'Seaside-Example') Pharo Smalltalk Users mailing list wrote > Hi, > > I am just starting to work with Pharo and Seaside to create a website that > accepts payments though stripe. Smalltalk is supported as a third party > library according to https://stripe.com/docs/libraries#third-party > > However I cannot get it to install. Is the stripe library still > supported? > If anyone can help me with this I would really appreciate it. > > I am using Pharo 7.0 64bit on Ubuntu linux. > > I followed the instructions to install the library as per > http://smalltalkhub.com/#!/~pdebruic/Stripe/ > > > Gofer new > url: 'http://smalltalkhub.com/mc/pdebruic/Stripe/main'; > package: 'ConfigurationOfStripe'; > load. > > (Smalltalk at: #ConfigurationOfStripe) project stableVersion > load:#('Tests' > 'Seaside-Example'). > > > Transcript log: > > ConfigurationOfStripe>>initializeEnvironment (ZnZodiacNetworkingUtils is > Undeclared) > > Loading 20161203 of ConfigurationOfStripe... > Fetched -> ConfigurationOfZincHTTPComponents-SvenVanCaekenberghe.120 --- > http://mc.stfx.eu/ZincHTTPComponents --- > http://mc.stfx.eu/ZincHTTPComponents > Loaded -> ConfigurationOfZincHTTPComponents-SvenVanCaekenberghe.120 --- > http://mc.stfx.eu/ZincHTTPComponents --- > http://mc.stfx.eu/ZincHTTPComponents > Fetched -> ConfigurationOfHTTPAPIClient-PaulDeBruicker.10 --- > http://smalltalkhub.com/mc/pdebruic/HTTPAPIClient/main/ --- > http://smalltalkhub.com/mc/pdebruic/HTTPAPIClient/main/ > Loaded -> ConfigurationOfHTTPAPIClient-PaulDeBruicker.10 --- > http://smalltalkhub.com/mc/pdebruic/HTTPAPIClient/main/ --- > http://smalltalkhub.com/mc/pdebruic/HTTPAPIClient/main/ > Fetched -> ConfigurationOfSeaside3-topa.337 --- > http://smalltalkhub.com/mc/Seaside/MetacelloConfigurations/main/ --- > http://smalltalkhub.com/mc/Seaside/MetacelloConfigurations/main/ > Loaded -> ConfigurationOfSeaside3-topa.337 --- > http://smalltalkhub.com/mc/Seaside/MetacelloConfigurations/main/ --- > http://smalltalkhub.com/mc/Seaside/MetacelloConfigurations/main/ > > > Debugger triggered: > Error:Name not found: Seaside-Pharo-Development > > > p.s. - I am a beginner at smalltalk, so thank you for your patience > > > > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

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Installing PharoJS
by Shaping Oct. 7, 2019

Oct. 7, 2019

Hi. Can someone explain exactly how to install the latest version of PharoJS, and verify that the proedure really works? I've tried: 1) cloning the PharoJS repo in Pharo 8.0 with Iceberg, and get a Not Loaded final state for the repo. 2) loading into Pharo 7, 6.1, and 5 using Metacello new baseline: 'PharoJS'; repository: 'github://bouraqadi/PharoJS'; load All tries fail with a walkback. 3) loading into Pharo 4.0 using Gofer it smalltalkhubUser: 'noury' project: 'PharoJS'; addPackage: #ConfigurationOfPharoJS ; loadStable. The walkback here mentions missing dependency RBGlobalNode. Suggestions are welcome. Thanks. Shaping

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