November 2017 - Pharo-users

Re: [Pharo-users] "sourcetrail" a code browser for C++/Java

by Holger Freyther

> On 1. Nov 2017, at 06:03, rainer.winkler(a)poaceae.de wrote: > > > Hi Holger, > > > So I am still using the Open Source Software Exploration Tool Moose2Model (www.moose2model.org) I developed. I use it for Smalltalk and SAP ABAP. It can be used in a similar way to Sourcetrail, but gives also the option to build commented and customized maps that can be stored and updated with new coding versions. Sourcetrail on the other hand gives much more details on the analyzed coding. ahh cool! Will watch your ESUG talk. What would be missing for Moose or Pharo? cheers holger

Nov. 3, 2017

Re: [Pharo-users] Writing "powerpoint" like presentations in Pharo?

by Stephan Eggermont

On 03/11/17 12:33, Tim Mackinnon wrote: > Cool - great minds think alike ;) :) > In your photo - there is keynote, are you creating there and then rendering in Pharo - or are you exporting to keynote to had out afterwards? That was the first experiment. I took a slide from a keynote presentation I have made and tried reproducing it in Bloc. The quality of the graphics and typographical support is now good enough to do that. It is a page from https://medium.com/concerning-pharo/pharo-50c66685913c I'm not yet sure how I'd want it integrated with gtInspector, how to have a slide-specific DSL and what kind of storage format to use. My Bloc experiments on vimeo are helping me test hypotheses on how I'd want to work with it. Last week I was distracted by private reasons, the weeks before that with PharoLauncher, P3, Iceberg... Interaction between text areas and drag and drop was not yet working as I wanted it to. Earlier experiments I've done with a glamour based browser, including exercises where save would recompile a method and show the results Stephan

Nov. 3, 2017

Re: [Pharo-users] Looking for game state

by Hans N Beck

Hi Stef, Not sure what you want to show: decision trees, belief network, concurrent actor model ... Iâm also interested which book you read and what are your plans :) :) Cheers Hans > Am 03.11.2017 um 11:09 schrieb Alexandre Bergel <alexandre.bergel(a)me.com>: > > Hi! > > In my lecture I use a starcraft unit, the tank. It can be in a siege mode with increased damage point, but it cannot move. There are two states therefore > > Alexandre > >> Le 3 nov. 2017 Ã 05:59, Stephane Ducasse <stepharo.self(a)gmail.com> a Ã©crit : >> >> Hi >> >> I'm reading a nice book explaining Game AI logic and it uses state >> design patterns and I would like to take it as an example for a future >> book on AI in the future >> >> They have two little actors talking via a a queued message list. There >> is one miner and its wife. >> >> Now I'm looking for a better example :) >> I was thinking about Pokemon hunting but if you have other ideas I'm >> interested. >> >> Stef >> <Screen Shot 2017-11-03 at 09.53.57.png> >> <Screen Shot 2017-11-03 at 09.57.34.png> > >

Nov. 3, 2017

Re: [Pharo-users] Writing "powerpoint" like presentations in Pharo?

by Tim Mackinnon

Ha -actually looking more closely at your photo, it looks like your are doing it in pharo and Iâm guessing are bored in a presentation (looking at the background) and recreating the slides from that presentation in Block (on the sly?)â¦nice Tim > On 3 Nov 2017, at 11:33, Tim Mackinnon <tim(a)testit.works> wrote: > > Cool - great minds think alike ;) > > In your photo - there is keynote, are you creating there and then rendering in Pharo - or are you exporting to keynote to had out afterwards? > > I was thinking of a little tool palette to let you drop some text and pick some images and store it in pages (like Stef has started doing). I wanted to be able to evaluate expressions in this text to show things in a presentation, and possibly embed methods etc. > > As everyone has said, its not rocket science but there is a bit to get right (and doing it in Bloc is actually a very good idea BTW). > > Tim > >> On 3 Nov 2017, at 11:11, stephan <stephan(a)stack.nl> wrote: >> >> On 01-11-17 19:35, Tim Mackinnon wrote: >>> Hi - has anyone made anything where you can create a full screen presentation in Pharo with slides with some large text, bullet points and embedded pictures - but then itâs a facade that lets you evaluate items in the slide or jump to any code mentioned? >> >> That is a project I've been toying with in Bloc. Next week is definitely too early. >> >> Stephan >> <https:__pbs.twimg.com_media_DI4w6UcWsAAXfbC.jpg> > >

Nov. 3, 2017

Re: [Pharo-users] Writing "powerpoint" like presentations in Pharo?

by Tim Mackinnon

Cool - great minds think alike ;) In your photo - there is keynote, are you creating there and then rendering in Pharo - or are you exporting to keynote to had out afterwards? I was thinking of a little tool palette to let you drop some text and pick some images and store it in pages (like Stef has started doing). I wanted to be able to evaluate expressions in this text to show things in a presentation, and possibly embed methods etc. As everyone has said, its not rocket science but there is a bit to get right (and doing it in Bloc is actually a very good idea BTW). Tim > On 3 Nov 2017, at 11:11, stephan <stephan(a)stack.nl> wrote: > > On 01-11-17 19:35, Tim Mackinnon wrote: >> Hi - has anyone made anything where you can create a full screen presentation in Pharo with slides with some large text, bullet points and embedded pictures - but then itâs a facade that lets you evaluate items in the slide or jump to any code mentioned? > > That is a project I've been toying with in Bloc. Next week is definitely too early. > > Stephan > <https:__pbs.twimg.com_media_DI4w6UcWsAAXfbC.jpg>

Nov. 3, 2017

Re: [Pharo-users] UFFI and Fortran

by Dimitris Chloupis

Yes Atlas , a library I made that is available via Package Browser from inside the Pharo image, makes Pharo capable of using any cpython library from inside Pharo, with Pharo syntax, live coding and debugging again inside Pharo. The Pharo syntax is limited to just calling methods and variable assignments. The library also has inlining python code (pass path code as a string from inside your pharo code) that gives access to full python capabilities (creating Python classes, list comprehensions, decorators, threading, multiprocessing etc). The advantage of using UFFI over Atlas is that it gives far better performance. Plus gives access to C libraries not wrapped for Python. The advantage of Atlas is that allows for dynamic execution of the library without the need for the creation of wrappers. Plus it allows for remote execution, meaning the python library can be in another computer or server anywhere in the world. So its much more than a FFI. Of course both approaches will require from you to map C or Python data to Pharo objects. At some point I will update Atlas to be as fast as UFFI , adding to the socket functionality also shared memory that is vastly faster. For now this is a low priority for me. On Fri, Nov 3, 2017 at 5:10 AM horrido <horrido.hobbies(a)gmail.com> wrote: > Sounds like it's possible to call into TensorFlow (Python) from Pharo. That > would give Pharo a tremendous boost for machine learning applications. > > Am I right? > > > kilon.alios wrote > > Maybe you talk about TalkFFI which aumatically wrapped C libraries for > > Pharo and i think Squeak as well but used Nativeboos, i think > > > > > http://forum.world.st/TalkFFI-automatic-FFI-generation-for-Pharo-td4662239.… > > > > On the subject of Fortran yes you can use UFFI if Fortran code is > compiled > > as a DLL (or equivelant non Windoom OSes) > > > > https://software.intel.com/en-us/node/535305 > > > > Dynamic Library format are not exclusive to C for generation , many > > languages can generate them so even though UFFI is used predominatly for > C > > any language that can generate a DLL without any name mangling should be > > accessible via UFFI. > > > > if DLL generation is not possible, then you can drop down to my solution > > of > > Shared Memory Mapped Files. Which means you make an executable in Frotran > > (or any other language) that contains the code you want to access and > > creates a shared memory region and you can access that region from Pharo > > via UFFI. > > > > This is how I built my CPPBridge project. Which one can use as a template > > for generating similar bridge for Fortran or any other language where the > > generation of DLLs is not practical or possible. > > > > The shared memory region can be used also as a means of communication > > additional to sharing live state, memory mapped files automatically save > > the live state so next time you open the file it behaves as you would > > expect a Pharo image to behave by restoring the live state. A means to > > extend Pharo image to include memory not managed by the VM. > > > > Because memory mapped files is mechanism of the OS Kernel and is also the > > mechanism used for the loading of dynamic libraries like DLLs there is > > also > > no loss of performance and is the fastest way of communication between > > languages, libraries and applications. > > > > So yes using Fortran code is possible via UFFI in more than one way. > > > > But in the end it should be noted here that because IPC mechanisms > (common > > way of using libraries from other languages) are based on core OS > > functionality like , memory managment, sockets , pipes, etc its not hard > > to > > use libraries from any language from inside any language. > > > > So Pharo can use Fortran libraries and Fortran can use Pharo libraries, > > its > > also possible to retain live coding even when executing code written in > > another language through various means. Recently I was succesful in > making > > Python into a basic live coding enviroment , meaning code that when > > changed > > in the source file it updates also existing live intances as you expect > in > > Pharo. Python also supports memory mapped files so its possible to create > > a > > joined live coding enviroment and live image that containes both Pharo > and > > Python bytecode. Of course without touching VM source code. > > > > Even though live state is not tricky to retain for compiled languages, > > live > > code can be a bit trickier to do but still not impossible or that hard as > > most would assume. > > > > Sky is the limit. > > > > Bottom line is that if you have a favorite library in any language you > can > > use it from inside Pharo with at worst a few hundrend lines of setup code > > you can create as a library and of coure reuse next time you want to use > > again a library from another language without having to write a line of > > additional code. The technology is available is just a matter of learning > > how to use it. Especially if its a very large libraries it will be > > thousands times easier than trying to replicate the functionality in > > Pharo. > > > > > > > > On Fri, Oct 27, 2017 at 6:26 PM Sean P. DeNigris < > > > sean@ > > > > > > wrote: > > > >> Ben Coman wrote > >> > it seems to hint how to do it from Pharo UFFI. > >> > >> Slightly OT: I remember years ago, someone (Dave Mason?) demoed a > library > >> which automatically created FFI wrappers for C libs. I never heard > >> anything > >> about it after that, which is sad, because I was amazed and wanted to > use > >> it! > >> > >> > >> > >> ----- > >> Cheers, > >> Sean > >> -- > >> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html > >> > >> > > > > > > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html > >

Nov. 3, 2017

Re: [Pharo-users] Writing "powerpoint" like presentations in Pharo?

by stephan

On 01-11-17 19:35, Tim Mackinnon wrote: > Hi - has anyone made anything where you can create a full screen presentation in Pharo with slides with some large text, bullet points and embedded pictures - but then itâs a facade that lets you evaluate items in the slide or jump to any code mentioned? That is a project I've been toying with in Bloc. Next week is definitely too early. Stephan

Nov. 3, 2017

Re: [Pharo-users] LiteratureResearcher - where graphs, PDFs, and BibTex happily live together

by Manuel Leuenberger

Hi Christian, For text extraction I used the PDFTextStripper from PDFBox (https://github.com/apache/pdfbox/blob/5991a69ecbcd53775f685755a399304d04acc… <https://github.com/apache/pdfbox/blob/5991a69ecbcd53775f685755a399304d04acc…>). Itâs not perfect, but good enough. Maybe this can serve as an oracle for PDFtalk on how to do it. It basically parses the PDF into a DOM of words, lines, paragraphs, and pages. Repeating myself from an earlier thread, I would be very interested in a Pharo port of PDFtalk. What I currently need use text extraction, manipulation of annotations and content streams for drawing rectangles. Cheers, Manuel > On 3 Nov 2017, at 10:15, Christian Haider <christian.haider(a)smalltalked-visuals.com> wrote: > > Yes, reading PDFs is fine with PDFtalk, but what you want is more: Text extraction (there is a chapter in the spec about this). > This feature is not yet readily available. Some ground work has been done (content analysis), but for full text extraction more work is needed. > > Cheers, > Christian > >> -----UrsprÃ¼ngliche Nachricht----- >> Von: Pharo-users [mailto:pharo-users-bounces@lists.pharo.org] Im Auftrag >> von Stephane Ducasse >> Gesendet: Freitag, 3. November 2017 09:46 >> An: Any question about pharo is welcome <pharo-users(a)lists.pharo.org> >> Betreff: Re: [Pharo-users] LiteratureResearcher - where graphs, PDFs, and >> BibTex happily live together >> >> Hi manuel >> >> thanks for the details. I think that the framework of christian haidler should >> be able to read pdf. >> >> Stef >> >> On Thu, Nov 2, 2017 at 8:33 PM, Manuel Leuenberger >> <leuenberger(a)inf.unibe.ch> wrote: >>> Hi Stef, >>> >>> The PDF integration consists of three parts: >>> >>> 1. CERMINE (https://github.com/CeON/CERMINE) is fed with the PDF and >>> outputs metadata as BibTex and a structured XML (title, authors, >>> affiliations, abstract, keyword, references, â¦). This is not perfect, >>> but way better than any other metadata extractor I could find. >>> 2. From the metadata I generate hyperlinks that are anchored in the >>> PDF by a text key. pdf-linker (https://github.com/maenu/pdf-linker) >>> then searches for the anchors in the PDF text, using heuristics, as >>> PDF has a document model that is primarily intended for rendering and >>> printing, but not for processing. The hyperlinks are then inserted >>> using the awesome Apache PDFBox (https://pdfbox.apache.org/) >>> 3. Those hyperlinks point to an URI like >>> âpharo://handle/clickReference.in.?args=1&args=2â to represent a >>> reference 1 in the paper 2. Now comes the magic part: The OS allows >>> you to register custom handlers for custom URI schemes like pharo://. >>> For that I created a simple Objective-C app that handles the event and >>> passes it over as a HTTP message to a server running in Pharo >>> (https://github.com/maenu/PharoUriScheme) The OS will even start the >>> application if it is not yet running. >>> >>> While the custom URI scheme approach is super powerful, it has >>> critical drawbacks. Any application can request to be the receiver of >>> a URI scheme, just as browser are for http://. Especially on mobile >>> devices with limited access to the OS, this opens up an attack point >>> for malware apps that replicate original apps that make use of schemes >>> like facebook:// and eavesdrop all interactions. If an original app >>> transmits any unencrypted secrets or user data encoded in those URIs, >>> malware can easily intercept it without the user noticing the leak. I >>> guess this is the reason why many PDF viewer just support the standard >>> http:// and mailto:// schemes. E.g., macOS Preview gives just an >>> audible beep when I click on a pharo:// link, Chromes viewer doesnât >>> even bother giving any feedback. Only Adobe Acrobat allows you to >>> relax security settings to make them work (How could it be someone else >> than Adobe, when itâs a security issue? ;). >>> >>> I finished basic packaging today and will continue with some READMEs >>> and a nearly-all-in-one distribution tomorrow, Iâll keep you posted in >>> this thread. >>> >>> Cheers, >>> Manuel >>> >>> On 2 Nov 2017, at 18:08, Stephane Ducasse <stepharo.self(a)gmail.com> >> wrote: >>> >>> Hi manuel >>> >>> this is super cool :) >>> Could you describe how you did the pdf integration? >>> And yes please package it :) >>> I want to try it. >>> >>> Stef >>> >>> On Wed, Nov 1, 2017 at 10:16 PM, Manuel Leuenberger >>> <leuenberger(a)inf.unibe.ch> wrote: >>> >>> Hi everyone, >>> >>> I was experimenting in the last few weeks with my take on literature >>> research. For me, the corpus of scientific papers form an >>> interconnected graph, not those plain lists and tables we keep in our >>> bibliographies. So, here is the first prototype that has Google >>> Scholar integration for search, can fetch PDFs from IEEE and ACM, >>> extracts metadata from PDFs - all this results in hyperlinked PDFs! >>> >>> See a demo here: https://youtu.be/EcK3Pt_WnEw Also slides from the >> SCG >>> seminar here: >>> http://scg.unibe.ch/download/softwarecomposition/2017-10-31- >> Leuenberge >>> r-ILE.pdf >>> >>> I plan on packaging it, so that those who are interested can check it >>> out themselves (help wanted!). Currently, it only works on macOS. >>> >>> What do you think of my approach? Which use cases should be added? >>> >>> Cheers, >>> Manuel >>> >>> >>> > > >

Nov. 3, 2017

Re: [Pharo-users] Looking for game state

by Alexandre Bergel

Hi! In my lecture I use a starcraft unit, the tank. It can be in a siege mode with increased damage point, but it cannot move. There are two states therefore Alexandre > Le 3 nov. 2017 Ã 05:59, Stephane Ducasse <stepharo.self(a)gmail.com> a Ã©crit : > > Hi > > I'm reading a nice book explaining Game AI logic and it uses state > design patterns and I would like to take it as an example for a future > book on AI in the future > > They have two little actors talking via a a queued message list. There > is one miner and its wife. > > Now I'm looking for a better example :) > I was thinking about Pokemon hunting but if you have other ideas I'm > interested. > > Stef > <Screen Shot 2017-11-03 at 09.53.57.png> > <Screen Shot 2017-11-03 at 09.57.34.png>

Nov. 3, 2017

Re: [Pharo-users] Looking for game state

by Guillermo Polito

On Fri, Nov 3, 2017 at 9:59 AM, Stephane Ducasse <stepharo.self(a)gmail.com> wrote: > Hi > > I'm reading a nice book explaining Game AI logic and it uses state > design patterns and I would like to take it as an example for a future > book on AI in the future > Which one? I'm interested :) > > They have two little actors talking via a a queued message list. There > is one miner and its wife. > > Now I'm looking for a better example :) > I was thinking about Pokemon hunting but if you have other ideas I'm > interested. > > Stef > -- Guille Polito Research Engineer Centre de Recherche en Informatique, Signal et Automatique de Lille CRIStAL - UMR 9189 French National Center for Scientific Research - *http://www.cnrs.fr <http://www.cnrs.fr>* *Web:* *http://guillep.github.io* <http://guillep.github.io> *Phone: *+33 06 52 70 66 13

Nov. 3, 2017