March 2018 - Pharo-users - lists.pharo.org

Re: [Pharo-users] Ever growing image

by Stephane Ducasse

Yes and it will be a lot more than that. We have a better core. Then we will continue to make it smaller. It means that with a bunch of BaselineOf you should be able to create the Pharo that suits your needs. Now we will do it for people :). I think that copying the BaselineOf and removing some unless or not my focus package is something that people can afford. And if by accident something is not modular enough we always accept better modular code. So it will improve but again given a specific objectives people such hilaire should do it. Stef On Sun, Mar 4, 2018 at 4:12 PM, Ben Coman <btc(a)openinworld.com> wrote: > > > On 4 March 2018 at 20:08, Hilaire <hilaire(a)drgeo.eu> wrote: >> >> Le 04/03/2018 Ã 11:13, Esteban Lorenzano a Ã©crit : >>> >>> In our community, Pavel is the person that has the bigger experience on >>> shrinking process images. I followed his work for years and I know the >>> fragility of the process. Basically each new addition/removal was breaking >>> it and needing dependency tracking, etc. Now is the opposite: you just add >>> what you want, and you are sure the resulting image is a) healthy and b) >>> identical when running. >>> >> >> Indeed it is fragile. And given the latest image size, not sure it could >> lead to satisfactory results. > > > I understood that to mean that getting a minimal image via automated > stripping was more fragile than bootstrapping, > and with bootstrapping we are now on a better path. And Pharo is > transitioning a few tools. > Nautilus-->Calypso and Morphic-->Bloc. Obviously old and new overlap for a > time. So it should get better. > > cheers -ben >

March 5, 2018

Re: [Pharo-users] my mistake on Spec?

by Stephane Ducasse

First implement all the missing methods that you use in the spec class method. Then let us know. Stef On Sun, Mar 4, 2018 at 2:56 PM, Yuriy Babah <babah.yuriy06(a)gmail.com> wrote: > Thanks for your help, Stef. > Mistakes remain, but I will try to understand them > > 2018-03-04 16:35 GMT+03:00 Stephane Ducasse <stepharo.self(a)gmail.com>: >> >> I'm doing a pass on your code >> >> OrderedCollection new is better to me than #() asOrderedCollection. >> >> GUI_ListCourtCase new openWithSpec >> => DNU >> So I added the first missing method, but you should define the >> corresponding methods in the class. >> >> >> >> >> >> >> >> On Sun, Mar 4, 2018 at 2:28 PM, Stephane Ducasse >> <stepharo.self(a)gmail.com> wrote: >> > Hi yuri >> > >> > some feedback before looking into spec. >> > tab method bodies >> > then do not use instance variables with uppercase. >> > >> > Stef >> > >> > >> > On Sun, Mar 4, 2018 at 2:26 PM, Yuriy Babah <babah.yuriy06(a)gmail.com> >> > wrote: >> >> changed >> >> >> >> 2018-03-04 16:20 GMT+03:00 Yuriy Babah <babah.yuriy06(a)gmail.com>: >> >>> >> >>> Is it enough if I just attach it? >> >>> >> >>> I slightly changed the code, that leads to error: "DoesNotUndestand >> >>> #plaintiffsTextInput" . >> >>> >> >>> Now I'm studying Help on Spec in SystemBrowser . >> >>> >> >>> >> >>> >> >>> 2018-03-04 15:23 GMT+03:00 Stephane Ducasse <stepharo.self(a)gmail.com>: >> >>>> >> >>>> Hi Yuriy >> >>>> >> >>>> this is difficult to debug remotely. Do you have your code somewhere? >> >>>> >> >>>> Stef >> >>>> >> >>>> On Sat, Mar 3, 2018 at 8:41 AM, Yuriy Babah <babah.yuriy06(a)gmail.com> >> >>>> wrote: >> >>>> > Hi! >> >>>> > I'm trying to write GUI element with Spec, Pharo6.1x64 on Linux. >> >>>> > Do according to the SpecBooklet. >> >>>> > >> >>>> > Finished the fragment, and try do: >> >>>> > >> >>>> > ui := GUI_ListCourtCase new openWithSpec . -> #value was sent to >> >>>> > nil. >> >>>> > >> >>>> > I look in a debugger and: >> >>>> > >> >>>> > openWithSpecLayout: aSpec >> >>>> > "Build the widget using the spec name provided as argument and >> >>>> > display >> >>>> > it into a window" >> >>>> > >> >>>> > (window value notNil and: [ self needRebuild not ]) >> >>>> > ifTrue: [ "window != nil" >> >>>> > window value rebuildWithSpecLayout: aSpec ] >> >>>> > ifFalse: [ "If value = Nil --> send him a message ???" >> >>>> > window value: (self defaultWindowModelClass new model: >> >>>> > self). >> >>>> > window value openWithSpecLayout: aSpec. >> >>>> > self takeKeyboardFocus ]. >> >>>> > >> >>>> > ^ window value >> >>>> >> >>> >> >> > >

March 5, 2018

Re: [Pharo-users] Pharo for MacOs 10.6.8?

by Stephane Ducasse

Did you check http://get.pharo.org because we keep everything. stef On Mon, Mar 5, 2018 at 4:30 AM, stefano franchi <stefano.franchi(a)gmail.com> wrote: > I am trying to find a version of Pharo that would run on an old Mac > Powerbook that cannot be upgraded past 10.6.8, but I 'm having no luck. > > Any suggestions on what I should download? > > > > Cheers, > > Stefano > -- > __________________________________________________ > Stefano Franchi > > stefano.franchi(a)gmail.com > http://stefano.cleinias.org

March 5, 2018

Re: [Pharo-users] Bitwise operations in ByteArray (slicing, etc.)

by Stephane Ducasse

It looks like having BitArray is a good approach. Is there a MIT compatible version? I could add it to my collection collection :) Containers I should migrate it to github. Stef On Mon, Mar 5, 2018 at 2:52 PM, Richard O'Keefe <raoknz(a)gmail.com> wrote: > As I understand it, the OP's problem is that he wants to > count bits from the high end, and Integers don't *have* > a finite high end. > > PL/I has bit strings. Common Lisp has bit strings. > Some Schemes have copied Lisp. Eiffel _had_ bit strings, > more or less, but dropped them. > > Smalltalk/X has a BitArray class; see > http://live.exept.de/ClassDoc/classDocOf:,BitArray > for documentation. > > My own Smalltalk also has a BitArray class with a > somewhat different interface. Although developed > independently, both are implemented as byte arrays > with an associated count. It's not terribly hard. > For selecting small numbers of bits out of long > bit strings, this is more efficient than shifting > and masking a large integer. > > I rather wonder whether it might be possible to do > better by thinking in a somewhat less C-like style. > For example, Erlang handles unpacking network > packets and the like by letting you write bit-string > *patterns*, which the compiler can then generate > special-case code for. > > Run-time generation of small amounts of code is > somewhat easier in Smalltalk. (Most Smalltalks.) > What would it be like if you had a BitArray class > where you could say > extractor := BitArray extractorForBits: 3 to: 7 of: 256. > ... > extractor value: thisPacket > and extractor was a block (possibly cached) with > code specialised for just that case?

March 5, 2018

Re: [Pharo-users] Bitwise operations in ByteArray (slicing, etc.)

by Stephane Ducasse

On Sun, Mar 4, 2018 at 9:43 PM, Esteban A. Maringolo <emaringolo(a)gmail.com> wrote: > 2018-03-04 17:15 GMT-03:00 Sven Van Caekenberghe <sven(a)stfx.eu>: >> Bits are actually numbered from right to left (seen from how they are printed). > > I understand bit operations, used it extensively with IP address eons ago. > > But if a spec says: "Take the first n bits from the hash", it means > the first significant bits. > so in 2r100101111 the first 3 bits are "100" and not "111". naive question: why? To me it looks like a lousy specification. > >> But in a fixed amount of bits you could indeed number them the other way around. >> It does not matter that you write the leading zeros or not, everything to the left is zero anyway. When shifting, the right thing happens. > > If it were a packet, with a fixed size, and the header started with 0, > then the leading zeros matter. > > So in my use case it isn't the same "00000000000000000000000000000000" > than "000000000000000000000000000000000000000000000000" (both in hex > notation). > See [1] > >> Adding something like Integer>>#bitSliceFrom:to:size: based on your reverse numbering would be wrong, IMHO. > > Yes, it would be wrong. Unless you have to option to specify the > endianess you want to use. > >> I guess you could write it like >> >> n := 2r11110000101010001111000011110000. >> from := 8. >> to := 13. >> size := 32. >> (n >> (size - 13)) bitAnd: ((1 << ( to - from + 1)) - 1). >> >> But the size feels out of place. > > How so? > > Thanks in advance, this is super low priority, I just wanted to check > whether something like that already existed. > > Regards! > > > [1] https://github.com/eMaringolo/pharo-bip39mnemonic/blob/master/src/BIP39Mnem… > > > Esteban A. Maringolo >

March 5, 2018

Re: [Pharo-users] Bitwise operations in ByteArray (slicing, etc.)

by Richard O'Keefe

âAs I understand it, the OP's problem is that he wants to count bits from the high end, and Integers don't *have* a finite high end. PL/I has bit strings. Common Lisp has bit strings. Some Schemes have copied Lisp. Eiffel _had_ bit strings, more or less, but dropped them. Smalltalk/X has a BitArray class; see http://live.exept.de/ClassDoc/classDocOf:,BitArray for documentation. My own Smalltalk also has a BitArray class with a somewhat different interface. Although developed independently, both are implemented as byte arrays with an associated count. It's not terribly hard. For selecting small numbers of bits out of long bit strings, this is more efficient than shifting and masking a large integer. I rather wonder whether it might be possible to do better by thinking in a somewhat less C-like style. For example, Erlang handles unpacking network packets and the like by letting you write bit-string *patterns*, which the compiler can then generate special-case code for. Run-time generation of small amounts of code is somewhat easier in Smalltalk. (Most Smalltalks.) What would it be like if you had a BitArray class where you could say extractor := BitArray extractorForBits: 3 to: 7 of: 256. ... extractor value: thisPacket and extractor was a block (possibly cached) with code specialised for just that case?

March 5, 2018

Mounting/seeing samba network files on Pharo

by CÃ©drick BÃ©ler

Hi all, I try to use Pharo in my lecture, therefore in our virtualized architecture. The problem is once dowloaded and launched (on Desktop or Document - the student repository that is mounted on the virtualized machine), Pharo cannot access the networked file system (source is not accessible, save as not possible, etc..). Does someone has experience on that ? Is it possibile to mount a samba directory ? TIA, CÃ©drick

March 5, 2018

Re: [Pharo-users] [Pharo-dev] Looking for names for the booklet collection

by John Pfersich

+1 Sent from my iPad For encrypted mail use jgpfersich(a)protonmail.com Get a free account at ProtonMail.com > On Mar 4, 2018, at 08:49, Peter UhnÃ¡k <i.uhnak(a)gmail.com> wrote: > > > Pharo Tools & Technologies > > Pharo Language & Environment > > +1 ... simple, obvious, to the point > > please no cryptic/"clever" names > >> On Sun, Mar 4, 2018 at 4:41 PM, Benoit St-Jean via Pharo-users <pharo-users(a)lists.pharo.org> wrote: >> >> >> ---------- Forwarded message ---------- >> From: Benoit St-Jean <bstjean(a)yahoo.com> >> To: Pharo Development List <pharo-dev(a)lists.pharo.org>, Ben Coman <btc(a)openinworld.com> >> Cc: Any question about pharo is welcome <pharo-users(a)lists.pharo.org> >> Bcc: >> Date: Sun, 4 Mar 2018 15:41:10 +0000 (UTC) >> Subject: Re: [Pharo-dev] Looking for names for the booklet collection >> Why not simply: >> >> Pharo Tools & Technologies >> Pharo Language & Environment >> >> ----------------- >> BenoÃ®t St-Jean >> Yahoo! Messenger: bstjean >> Twitter: @BenLeChialeux >> Pinterest: benoitstjean >> Instagram: Chef_Benito >> IRC: lamneth >> Blogue: endormitoire.wordpress.com >> "A standpoint is an intellectual horizon of radius zero". (A. Einstein) >> >> >> On Sunday, March 4, 2018, 10:30:46 AM EST, Ben Coman <btc(a)openinworld.com> wrote: >> >> >> >> >> On 4 March 2018 at 20:21, Stephane Ducasse <stepharo.self(a)gmail.com> wrote: >> Hi >> >> I would like to make a distinction between booklet on Pharo >> technologies (Smacc, Voyage, Scraping ...) and the booklets more >> oriented towards teaching something with pharo (building an >> interpreter, a reflective language...) >> >> Pharo Applications / Inside Pharo >> >> Over Pharo / Under Pharo >> >> Right now we have The Pharo Booklet Collection. >> And I'm looking for two names >> >> the Pharo academic booklet collection ? >> and >> the Pharo technology booklet collection ? >> >> Pharology / Pharocraft >> >> >> cheers -ben >> >> >> >> >> >

March 5, 2018

Re: [Pharo-users] Yet another Pharo in docker

by Herbert VojÄÃk

Herbert VojÄÃk wrote: > > > Sean P. DeNigris wrote: >> Sean P. DeNigris wrote >>>> https://hub.docker.com/r/herbysk/pharo/ >>> How are the images built from https://lolg.it/herby/pharo-docker? >> >> Researching a bit it seems that Docker Hub only supports GitHub and >> BitBucket, and IIUC you can't change the image name if you use automated >> building. Therefore, I assume you're going something custom. Is it >> manual? > > Manual. I actually replied to original question, but mail got stuck in > moderation b/c it has empty subject or something. > > Whenever I see there is significant change / the project needs to have > the new changes in, I rebuild and reupload manually. Also, I pointed out in that lost mail, I only created this docker out of necessity since there isn't pharo official one. Having official one generated from Jenkins would be nice. > > Herby > >> Or is there a way to set up triggers for a custom solution? Thanks. >> >> >> >> ----- >> Cheers, >> Sean >> -- >> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html >> >

March 5, 2018

Re: [Pharo-users] Yet another Pharo in docker

by Herbert VojÄÃk

Sean P. DeNigris wrote: > Sean P. DeNigris wrote >>> https://hub.docker.com/r/herbysk/pharo/ >> How are the images built from https://lolg.it/herby/pharo-docker? > > Researching a bit it seems that Docker Hub only supports GitHub and > BitBucket, and IIUC you can't change the image name if you use automated > building. Therefore, I assume you're going something custom. Is it manual? Manual. I actually replied to original question, but mail got stuck in moderation b/c it has empty subject or something. Whenever I see there is significant change / the project needs to have the new changes in, I rebuild and reupload manually. Herby > Or is there a way to set up triggers for a custom solution? Thanks. > > > > ----- > Cheers, > Sean > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html >

March 5, 2018