May 2017 - Pharo-users - lists.pharo.org

Not much longer...

by Norbert Hartl

On my vacation I saw this progress bar about pharo. So looks close to 6 for me :)

May 11, 2017

Re: [Pharo-users] Glamour Fast List, double click action. Is it supported?

by Juraj Kubelka

> On May 11, 2017, at 03:58, Esteban Lorenzano <estebanlm(a)gmail.com> wrote: > > >> On 10 May 2017, at 21:00, Juraj Kubelka <juraj.kubelka(a)icloud.com> wrote: >> >> Hi! >> >> Does Glamour Fast List Presentation allow double click action on a item? >> >> I cannot find anything like that. > > it should be âstrongSelectionâ, isnât? You are right, the double click is calles strongSelection, and the solution is: -=-=-=- browser := GLMTabulator new. browser column: #one. browser transmit to: #one; andShow: [ :a | a fastList title: 'List'; onChangeOfPort: #strongSelection act: [ :presentation :entity | self inform: 'STRONG selection on ', presentation strongSelection asString ] ]. browser openOn: Object allSubclasses -=-=-=- Thanks! Juraj > > Esteban > >> >> Thanks! >> Juraj >> >> > >

May 11, 2017

Re: Wandering Through Dependency Hell

by Milan Vavra

Evan wrote: >If anyone knows how to figure out how to force all the current good code in >my image into one massive commit, so that other people can check out the >current, working version, please do not hesitate to let me know. If you are using mczs, all changes are committed each time. Each mcz archive is a snapshot of all the classes and methods in the system category that defines the package at the moment in time when you saved it. Much like a git commit. So all you need to do is to save another version of the package. Just make sure the filename you use is unique. If in doubt, you can use a version number that resembles a timestamp like YourPackage-YourName.201705111236.mcz where 201705111236 is 2017-05-11, 12:36. Best Regards, Milan Vavra -- View this message in context: http://forum.world.st/Wandering-Through-Dependency-Hell-tp4946266p4946653.h… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

May 11, 2017

Re: [Pharo-users] Smalltalkers will, eventually, win. So says this old C++ programmer.

by Thibault Raffaillac

> Hi kilon, > > Some weeks ago I tried the C live programming technique for the Ludum Dare. > It works very well. For that occasion I wrote this short article > https://ldjam.com/events/ludum-dare/38/smalcoded-a-small-eco-destroyed-worl… > . The game ended pretty well in my opinion: > https://ldjam.com/events/ludum-dare/38/smalcoded-a-small-eco-destroyed-world > . Cool game for a first LD :) (I got till Europe and lost in the snowy mountains of Italy...)

May 11, 2017

Fwd: Re: 11/05/17 - Tabular Data Structures for Data Analysis - Oleksandr Zaytsev

by phil＠highoctane.be

---------- Message transfÃ©rÃ© ---------- De : "phil(a)highoctane.be" <phil(a)highoctane.be> Date : 11 mai 2017 10:54 Objet : Re: 11/05/17 - Tabular Data Structures for Data Analysis - Oleksandr Zaytsev Ã : "Nick Papoylias" <npapoylias(a)gmail.com> Cc : On Thu, May 11, 2017 at 10:20 AM, Nick Papoylias <npapoylias(a)gmail.com> wrote: > > > On Thu, May 11, 2017 at 5:24 AM, Oleksandr Zaytsev <olk.zaytsev(a)gmail.com> > wrote: > >> >> *A. Work done* >> >> - Downloaded the threaded VM as suggested by Esteban Lorenzano to >> make Iceberg work. And it does! I have successfully pushed my NeuralNetwork >> code to GitHub: https://github.com/olekscode/MLNeuralNetwork >> - Joined the PolyMath organization on GitHub >> - Created a repository for the TabularDataset project >> https://github.com/PolyMathOrg/TabularDataset >> <https://github.com/PolyMathOrg/TabularDataset> as a part of PolyMath >> organization on GitHub >> - Fixed a PolyMath issue #25 and made a PR >> - Read an article from Wolfram Mathematica documentation regarding >> Dataset. It was one of the reading suggestions sent to me by Nick Papoylias >> >> >> *B. Next steps* >> >> - Fix more issues of PolyMath, using Iceberg. I have to get used to >> it by the time the coding phase starts >> - Read the rest of Nick Papoylias's suggestions >> >> >> *C. Help needed* >> >> - The Dataset in Wolfram, as well as Pandas in Python, has a very >> advanced indexing system. Smalltalk has its own special conventions for >> indexing, so I think that it would be great if I got familiar with them. >> Could you suggest me some reading on this topic (what are the indexing >> conventions in Smalltalk?). >> For example, in Wolfram, I can write *dataset[[-1]]* to extract the >> last row. But in Pharo indexes can not be negative. In Pharo I would say *dataset >> last*. But how about *dataset[[-5]]*? >> >> This would be a good exercise for you ;) In Pharo you can easily add > negative indexing yourself. > > *Hint:* You know the index of the last element, since this is the size of > the collection, so... ;) > > No need for changes, this exists already. Use atWrap: index put: value and atWrap: with negative indexes. 'hello' atWrap: -2 There is a specific version for Array using a primitive. #[ 10 20 30 40 ] atWrap: -1 atWrap:0 gives you the last item. atWrap: -1 gives 30 This is different from 0 based index languages. The interesing thing about atWrap: is that it uses modulo interally so you do not need to care about that. ($/ split: 'abc/def/ghi/jkl') atWrap: -1 --> 'ghi' The Matrix class has a bunch of things API wise but the class is highly inefficient, doing copies all the time etc. It would be nice to have some kind of futures/copy on write style things in there. I miss cbind and rbind. These are useful. I have some half baked super inefficient implementations of these things for Matrix. https://stat.ethz.ch/R-manual/R-devel/library/base/html/cbind.html The ability to name columns is also nice to have. In R one does: df <- dataframe() cbind(df, c(1,2,3)) cbind(df, c(4,5,6)) names(df)<-("C1", "C2", "C3") names can be found back with: names(df) A Smalltalkish style would be welcome. Maybe looking at the Voyage queries can be helpful. Phil > Try adding an extention method to Ordrered or SequenceableCollection. > > If the Pharo by example chapter is not enough or the MOOC, read the source > itself in the core, to see how basic methods are implemented (it is less > scary, > than it sounds). > > You can also try Chapters 9, 10, 11 of the blue book (some API changes may > apply): > > <http://goog_1902892863> > http://sdmeta.gforge.inria.fr/FreeBooks/BlueBook/Bluebook.pdf > > >> - Or what is the best way of implementing this index: >> *dataset[["name"]]* (extracts a named row), *dataset[[1]*] (extracts >> the first row)? Should I create two separate messages: *dataset >> rowNamed: 'name'* and *dataset rowAt: 1*? >> >> rowNamed: rowAt: yes, look like it. But if we want to model things like R dataframes for example, this has to be seen as a vectorized operation, so you can to use row slices, column slices, and logical indexes. Check this out: http://www.r-tutor.com/r-introduction/data-frame/data-frame-row-slice https://www.r-bloggers.com/working-with-data-frames/ > The internal representation of your data-structure can be anything at the > moment, *as long as you encapsulate it.* > > (ie it can be nested OrderedCollections with meta-data for column-names to > indexes, or dictionary of collections etc). > > *If you don't expose it to the user* (ie return it from the public api, > or expect knowledge of it in argument passing), > we can easily change it later. So *first make it work, and we optimize > later ;)* > > For your case it will be a little bit trickier because *you also have the > notions of a) rows and b) columns*, which > are exposed to the user. So *you would need to create abstractions* for > these too. > > Cheers, > > Nick > >> >> - >> >> >> If someone else is having problems with Iceberg on Linux, try downloading >> the threaded VM: >> >> wget -O- get.pharo.org/vmT60 | bash >> >> And use SSH (not HTTPS) remote URL. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Pharo Google Summer of Code" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to pharo-gsoc+unsubscribe(a)googlegroups.com. >> To post to this group, send email to pharo-gsoc(a)googlegroups.com. >> To view this discussion on the web visit https://groups.google.com/d/ms >> gid/pharo-gsoc/CAEp0Uzu-8fw3dA6ezVoj-QptvLcB8cWPHvZ1tfLg1Ce8 >> qkTqfQ%40mail.gmail.com >> <https://groups.google.com/d/msgid/pharo-gsoc/CAEp0Uzu-8fw3dA6ezVoj-QptvLcB8…> >> . >> For more options, visit https://groups.google.com/d/optout. >> > > -- > You received this message because you are subscribed to the Google Groups > "Pharo Google Summer of Code" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to pharo-gsoc+unsubscribe(a)googlegroups.com. > To post to this group, send email to pharo-gsoc(a)googlegroups.com. > To view this discussion on the web visit https://groups.google.com/d/ms > gid/pharo-gsoc/CACEStOgLC6HbYJ8HBLHWfs5%2BwqN3ib_kdVGuVizx7G > h1c0sM%3DA%40mail.gmail.com > <https://groups.google.com/d/msgid/pharo-gsoc/CACEStOgLC6HbYJ8HBLHWfs5%2BwqN…> > . > For more options, visit https://groups.google.com/d/optout. >

May 11, 2017

Re: [Pharo-users] Petri nets and workflow patterns

by Norbert Hartl

> Am 11.05.2017 um 09:59 schrieb Serge Stinckwich <serge.stinckwich(a)gmail.com>: > > On Wed, May 10, 2017 at 10:09 PM, Stephane Ducasse > <stepharo.self(a)gmail.com> wrote: >> Norbert >> >> I know petri nets and I was wondering if you were interested in worklow (as >> in microworkflow). >> because I think that a simple extensible workflow library is missing in >> Pharo > > I guess you talk about this: http://micro-workflow.com/phdthesis/ > Is the source code available somewhere? Norbert

May 11, 2017

Re: [Pharo-users] SourceCity

by Tudor Girba

Hi, CodeCity was last working in Pharo 4 because it relied on NativeBoost. The Moose version that works in Pharo 4 is: http://moosetechnology.org/res/download/moose_image_5_1 You can load the code using: Gofer new smalltalkhubUser: 'RichardWettel' project: 'CodeCity'; configuration; load. (Smalltalk at: #ConfigurationOfCodeCity) loadDevelopment However, something does not seem to work using the latest Pharo 4.0 VM on Mac Sierra. Cheers, Doru > On May 11, 2017, at 9:51 AM, phil(a)highoctane.be wrote: > > Where can I get a working SourceCity? Even in older Pharo/Moose. > > I've got a use case for metrics that would be a pretty good fit. > > > Philippe -- www.tudorgirba.com www.feenk.com "No matter how many recipes we know, we still value a chef."

May 11, 2017

UK Smalltalk User Group meeting - Monday, 22nd May

by Giovanni Corriga

The next meeting of the UK Smalltalk User Group Meeting will be on Monday, 22nd May. We'll meet at our usual venue The Counting House ( http://www.the-counting-house.com/) at 7pm. If you'd like to join us, you can just show up at the pub. You can also sign up in advance at the meeting's Meetup page: https://www.meetup.com/UKSTUG/events/234265226/ . See you there!

May 11, 2017

Re: [Pharo-users] Petri nets and workflow patterns

by Norbert Hartl

> Am 11.05.2017 um 09:58 schrieb Serge Stinckwich <serge.stinckwich(a)gmail.com>: > > On Wed, May 10, 2017 at 6:13 PM, Norbert Hartl <norbert(a)hartl.name> wrote: >> >>> Am 10.05.2017 um 17:46 schrieb Serge Stinckwich <serge.stinckwich(a)gmail.com>: >>> >>> On Wed, May 10, 2017 at 5:36 PM, Norbert Hartl <norbert(a)hartl.name> wrote: >>>> Are there any resources regarding petri nets or control flowâ¦/workflow patterns in pharo or smalltalk? >>> >>> We have done some work with one student of Alexandre about BPMN: >>> http://a4bp.com/ >>> >> I downloaded the app but it opens with a black screen on my Mac laptop. > > Yes this is the usual story .... software rots at the end. > I guess you are using last version of mac os x and the VM provided on > the web site does not work anymore. > Ah, right. I just need to use my own vm to start it. I'll try again :) Norbert > Give me 3 students and I will change this situation ;-) > I want to continue this work but I have to find motivated students. > >>> and there is PNTalk also: >>> https://github.com/SergeStinckwich/PNTalk >>> >> Thanks, that is what I was looking for. >> >>> Long time ago I was able to do process mining from logs and generate Petri Nets: >>> https://www.youtube.com/watch?v=wdf80t32v-0 >> >> That is really close to what I want to play with. Did you ever encounter van der Aalst workflow pattern in that context. Do you know any material comparing the approaches? > > I know van der Aalst work but I don't know exactly what do you mean by > workflow pattern. The one described here: > http://www.workflowpatterns.com/patterns/control/index.php > > Regards, > -- > Serge Stinckwich > UCN & UMI UMMISCO 209 (IRD/UPMC) > Every DSL ends up being Smalltalk > http://www.doesnotunderstand.org/ >

May 11, 2017

Re: [Pharo-users] Petri nets and workflow patterns

by Serge Stinckwich

On Wed, May 10, 2017 at 10:09 PM, Stephane Ducasse <stepharo.self(a)gmail.com> wrote: > Norbert > > I know petri nets and I was wondering if you were interested in worklow (as > in microworkflow). > because I think that a simple extensible workflow library is missing in > Pharo I guess you talk about this: http://micro-workflow.com/phdthesis/ -- Serge Stinckwich UCN & UMI UMMISCO 209 (IRD/UPMC) Every DSL ends up being Smalltalk http://www.doesnotunderstand.org/

May 11, 2017