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

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

by Stephane Ducasse

defaultSpec2 <spec: #default> ^ SpecLayout composed newColumn: [ :col | col newRow: [ :row | row add: #plaintiffsTextInput; add: #addButtonPlaintiffs ]; newRow: [ :row | row add: #defendantsTextInput; add: #addButtonDefendants ]; newRow: [ :row | row add: #thirdPartiesTextInput; add: #addButtonThirdParties ]; newRow: [ :row | row add: #addButtonCourtCase ] ]; yourself is working On Mon, Mar 5, 2018 at 9:00 PM, Stephane Ducasse <stepharo.self(a)gmail.com> wrote: > I'm trying to understand. > I do not get a DNU with the following. You cannot put row out of nowhere. > > defaultSpec > ^ SpecLayout composed > newColumn: [ :col | > col > newRow: [ :row | > row > add: #plaintiffsTextInput; > add: #addButtonPlaintiffs ]; > newRow: [ :row | > row > add: #defendantsTextInput; > add: #addButtonDefendants ]; > newRow: [ :row | > row > add: #thirdPartiesTextInput; > add: #addButtonThirdParties ] ]; > yourself > > Now I do not understand why when I add the next lines I get an error > > > > > > > > > On Mon, Mar 5, 2018 at 7:03 PM, Yuriy Babah <babah.yuriy06(a)gmail.com> wrote: >> yesterday i did it, and got --> doesNotUndestand #layout >> >> 2018-03-05 20:28 GMT+03:00 Stephane Ducasse <stepharo.self(a)gmail.com>: >>> >>> 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] my mistake on Spec?

by Stephane Ducasse

I'm trying to understand. I do not get a DNU with the following. You cannot put row out of nowhere. defaultSpec ^ SpecLayout composed newColumn: [ :col | col newRow: [ :row | row add: #plaintiffsTextInput; add: #addButtonPlaintiffs ]; newRow: [ :row | row add: #defendantsTextInput; add: #addButtonDefendants ]; newRow: [ :row | row add: #thirdPartiesTextInput; add: #addButtonThirdParties ] ]; yourself Now I do not understand why when I add the next lines I get an error On Mon, Mar 5, 2018 at 7:03 PM, Yuriy Babah <babah.yuriy06(a)gmail.com> wrote: > yesterday i did it, and got --> doesNotUndestand #layout > > 2018-03-05 20:28 GMT+03:00 Stephane Ducasse <stepharo.self(a)gmail.com>: >> >> 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 stefano franchi

On Mon, Mar 5, 2018 at 11:28 AM, Stephane Ducasse <stepharo.self(a)gmail.com> wrote: > Did you check > > http://get.pharo.org > > because we keep everything. > > Apologies for not having stated my question more precisely. Indeed, I started from get.pharo.org, but the zeroconf script did not guess right. The app it downloaded crashes at startup. Then I saw the *long* list of versions available and had no idea where to begin. So my real question is: Does anyone know which among the many VMs available on http://get.pharo.org would work on a MacOs Powerbook Pro running 10.6.9? It was the latest 32 bit only machine Apple made, based on the Intel Core Duo (NOT the Intel Core 2 Duo that came out a few months later). Thanks, Stefano > 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 > > -- __________________________________________________ Stefano Franchi stefano.franchi(a)gmail.com <stefano(a)tamu.edu> http://stefano.cleinias.org

March 5, 2018

Re: [Pharo-users] PetitParser Question

by Stephane Ducasse

Hi Asbath there is a chapter on Pillar in deep into pharo or the next book. You also have a chapter on the http://themoosebook.org Stef On Mon, Mar 5, 2018 at 7:26 PM, Asbath via Pharo-users <pharo-users(a)lists.pharo.org> wrote: > > > ---------- Forwarded message ---------- > From: Asbath <asamabiyalou(a)yahoo.com> > To: pharo-users(a)lists.pharo.org > Cc: > Bcc: > Date: Mon, 5 Mar 2018 19:26:49 +0100 > Subject: PetitParser Question > Hi everybody, > > We are a group of students working on Pillar, and we notice that the Parser of Pillar is based on PetitParser Library. Then we want to know more about PetitParser !? > > Thanks, > > Asbath > > >

March 5, 2018

PetitParser Question

by Asbath

Hi everybody, We are a group of students working on Pillar, and we notice that the Parser of Pillar is based on PetitParser Library. Then we want to know more about PetitParser !? Thanks, Asbath

March 5, 2018

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

by Esteban A. Maringolo

2018-03-05 14:02 GMT-03:00 Stephane Ducasse <stepharo.self(a)gmail.com>: > 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? Because it says so. "A checksum is generated by taking the first ENT / 32 bits of its SHA256 hash. This checksum is appended to the end of the initial entropy. Next, these concatenated bits are split into groups of 11 bits, each encoding a number from 0-2047, serving as an index into a wordlist. Finally, we convert these numbers into words and use the joined words as a mnemonic sentence." [1]. > To me it looks like a lousy specification. It might be, I can't really tell. But such manipulation could be useful if you are knitting different parts of a binary packet whose boundaries are not at byte level, but bit instead. So you can take "these 5 bits, concatenate with this other 7, add 13 zero bits, then 1 followed by the payload". I'm assuming a non real case here though, my use case was fulfilled already. Regards! -- Esteban A. Maringolo [1] https://github.com/bitcoin/bips/blob/master/bip-0039.mediawiki#generating-t…

March 5, 2018

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

by Esteban A. Maringolo

2018-03-05 10:52 GMT-03:00 Richard O'Keefe <raoknz(a)gmail.com>: > 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. Exactly. I want to work with a block of bits, today the best proxy for that is using an Integer. > Smalltalk/X has a BitArray class; see > http://live.exept.de/ClassDoc/classDocOf:,BitArray > for documentation. This class basically does the job. Thank you for the reference. Esteban A. Maringolo

March 5, 2018

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

by Yuriy Babah

yesterday i did it, and got --> doesNotUndestand #layout 2018-03-05 20:28 GMT+03:00 Stephane Ducasse <stepharo.self(a)gmail.com>: > 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] Bitwise operations in ByteArray (slicing, etc.)

by Serge Stinckwich

On Mon, Mar 5, 2018 at 2:52 PM, Richard O'Keefe <raoknz(a)gmail.com> wrote: > 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. > > âGreat documentation ! We need something like that for Pharo classes. -- Serge Stinckwich UMI UMMISCO 209 (IRD/UPMC/UY1) "Programs must be written for people to read, and only incidentally for machines to execute."http://www.doesnotunderstand.org/

March 5, 2018

Re: [Pharo-users] Ever growing image

by Hilaire

Thanks Markus. I already saw an improvement when building drgeo against latest 32bits P7: drgeo image down to 39.9MB... I use image cleaner plus some packages removal of my own[1], left over of the cleaning I was doing on P3. Many of my package cleaning of P4 break on P7. There is still place for improvement. I remembered doingÂ it one by on P3, keeping the safe one, then excluding the one breaking the image. Now if there is a guide to try bootstrap without the need to hit the head on the door, I am interested to read it. Hilaire [1] https://bazaar.launchpad.net/~drgeo-developers/drgeo/trunk/files/506/src/Dr… Le 05/03/2018 Ã 08:39, Marcus Denker a Ã©critÂ : > I have put on my TODO: > - do a pass on ImageCleaner Pharo6 and Pharo7 > - start to find duplicated code to not load anymore in the bootstrap (e.g. > old compiler, inspectorâ¦). -- Dr. Geo http://drgeo.eu

March 5, 2018