January 2015 - Pharo-users - lists.pharo.org

Re: [Pharo-users] gt poster

by Sven Van Caekenberghe

Thanks, Doru. (It won't be on paper though, they are already printed) > On 28 Jan 2015, at 23:29, Tudor Girba <tudor(a)tudorgirba.com> wrote: > > Hi, > > Here is a poster for GT. > > Cheers, > Doru > > > -- > www.tudorgirba.com > > "Every thing has its own flow" > <gt-poster.pdf>

Jan. 29, 2015

Re: [Pharo-users] New book for Pharo :)

by HernÃ¡n Morales Durand

2015-01-28 18:51 GMT-03:00 kilon alios <kilon.alios(a)gmail.com>: > No idea what the problem really is, and what is that "mess" that concerns > Numpy/SciPy > This is an example of how wasted they are: http://stackoverflow.com/questions/6200910/relationship-between-scipy-and-n… Cheers, HernÃ¡n

Jan. 29, 2015

Re: [Pharo-users] New book for Pharo :)

by HernÃ¡n Morales Durand

Hi Werner 2015-01-28 21:11 GMT-03:00 Werner Kassens <wkassens(a)libello.com>: > Hi HernÃ¡n, > > >We have to get better at communication. It doesn't work if all of us fork > libraries. > > i guess i disagree, the occasional fork <g> can be freshening. > > >But I don't want to be forced to load the whole SciSmalltalk to use 3 > methods in NumericalMethods. > > that's not really necessary. assuming that you want to also use the > dhb-extensions, you can eg do something like: > (ConfigurationOfSciSmalltalk project version:#stable)load: #('Math-DHB-NumericalExtensions' > 'Math-Tests-DHB-Numerical'). Thank you for the tip. But that also means now I should change my configurations to stay updated because you (doesn't matter who) just couldn't resist copying all NumericalMethods packages to your own repository. This is like if I get 5 mathematicians, fork SciSmalltalk, push cool new features, and then make all you loose them if you don't update. And I could do it for fun 1000 times. You get the idea. But I am not against SciSmalltalk, I don't like forks without a good reason. > "a MetacelloFetchingMCSpecLoader(linear load : > linear load : 0.16 [ConfigurationOfSciSmalltalk] > linear load : 1.0 [ConfigurationOfArbitraryPrecisionFloat] > load : ArbitraryPrecisionFloat-nice.38 > load : ArbitraryPrecisionFloatTests-nice.16 > load : ExtendedNumberParser-nice.1 > load : Math-DHB-Numerical-wernerkassens.30 > load : Math-Tests-DHB-Numerical-wernerkassens.9 > load : Math-DHB-NumericalExtensions-WernerKassens.5)" > this loads additionally ArbitraryPrecisionFloat, but this is, i'd say, an > unimportant bug in the config, that should get repaired occasionally. and > ArbitraryPrecisionFloat is not that big. it's not really a problem. > > >Can you import the ConfigurationOfNumericalMethod from a common > repository in SciSmalltalk? > > there could eventually be a little difficulty. you cant load both > versions. I am saying there should be one version. > of course one could work around that problem in the config, but > 1. the config of scismalltalk is already complicated enough, that hardly > anyone changing it can get things right there at their first attempt. > Then the project is badly organized? Because Metacello supposedly should help things to become easier. > 2.it would also complicate the _use_ of the config for the user, a big > drawback imo. > of course one could simply throw away the fork. but then one would need to > throw away also some other packages. > a third possibility would be to put all changes in the fork in an extra > package that can be loaded on top of the original dhb. but that looks like > a sizable enough task, that i at least will not do it. > what do you think? > What's done is done. I doubt you could retract your changes. I don't like this situation but it seems to be the Smalltalk way. HernÃ¡n > werner > >

Jan. 29, 2015

how to debug zinc server errors from tests

by Martin BÃ¤hr

hi, when debugging a zinc server with tests structured as in http://zn.stfx.eu/zn/build-and-deploy-1st-webapp/ i am wondering how to best debug errors in the server while running tests. one test makes a ZnClient connection to a testserver started from the same test. the test fails with the server returning a 500 error. next i get an opportunity to debug the test, but what i really want is to to debug the server itself. one way is to run the client request manually from the browser, while the real server is in debug mode. that works most of the time, but sometimes it doesn't because there is a difference between the test-server and the real server. i found that i can set the test server into debug mode too, but that is not very satisfying because it causes the test to hang and lock until a timeout is reached and only then the debugger pops up. i'd like the debugger pop up immediately, let me debug and fix the error, and then have the tests proceed. is there a way to do that? greetings, eMBee. -- eKita - the online platform for your entire academic life -- chief engineer eKita.co pike programmer pike.lysator.liu.se caudium.net societyserver.org secretary beijinglug.org mentor fossasia.org foresight developer foresightlinux.org realss.com unix sysadmin Martin BÃ¤hr working in china http://societyserver.org/mbaehr/

Jan. 29, 2015

smalltalk workshops (building a webserver) after code-in

by Martin BÃ¤hr

hi, Google Code-In is over (i'll probably write more about that later) and there are a few students who have started their path to smalltalk. because there was interest among the students to continue learning, we have started a series of workshops to learn the elements of building a webserver. i have created a screencast for the first topic: FileSystem you can read more about the workshop and find the screencast here: http://societyserver.org/mbaehr/training/Using-the-FileSystem-class-in-Phar… being new to smalltalk myself, there are probably some mistakes, and things that could be done better, however i believe the screencast is usable for learning. i recorded this mostly without interruption except for a few times where i was lost and had to stop and look up what i was going to do. i am open to feedback and criticism of any kind, from pointing out redundant ()s or ways to improve the code to tips for debugging and testing. the next workshop will be saturday the greetings, martin. -- eKita - the online platform for your entire academic life -- chief engineer eKita.co pike programmer pike.lysator.liu.se caudium.net societyserver.org secretary beijinglug.org mentor fossasia.org foresight developer foresightlinux.org realss.com unix sysadmin Martin BÃ¤hr working in china http://societyserver.org/mbaehr/

Jan. 29, 2015

Re: [Pharo-users] any OCR library for Pharo (Free or Commercial)

by Paul DeBruicker

I don't know for sure but I don't think so. See this thread, about halfway down, for some ideas about how to interface with 3rd party libs: http://forum.world.st/Polymorph-improvements-tp3712781.html tesseract is a 3rd partly lib that may meet your needs: http://en.wikipedia.org/wiki/Tesseract_%28software%29 Sanjay Minni wrote > Hi > > is there any OCR library which has been interfaced with Pharo > (may be Free or Commercial library licence). > > I need a robust one preferably without deployment licence fee > > Regards > Sanjay -- View this message in context: http://forum.world.st/any-OCR-library-for-Pharo-Free-or-Commercial-tp480237… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Jan. 29, 2015

any OCR library for Pharo (Free or Commercial)

by Sanjay Minni

Hi is there any OCR library which has been interfaced with Pharo (may be Free or Commercial library licence). I need a robust one preferably without deployment licence fee Regards Sanjay ----- --- Regards, Sanjay -- View this message in context: http://forum.world.st/any-OCR-library-for-Pharo-Free-or-Commercial-tp480237… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Jan. 29, 2015

Re: [Pharo-users] Waiting object

by Laura Risani

Thank you Ben, i will take a look at that loop process. On Wed, Jan 28, 2015 at 1:49 PM, Ben Coman <btc(a)openinworld.com> wrote: > > > On Wed, Jan 28, 2015 at 11:31 PM, Laura Risani <laura.risani(a)gmail.com> > wrote: > >> Hi Ben , >> #fork let me implement the overall functionality i wanted, but i had to >> introduce some minor changes into the design to reflect the concurrent >> nature of the msg. So i still feel curious about how one could implement >> this msg >> >> Waiting>> wait : seconds >> "i take the flow control during 'seconds' without halting image morphs >> and only then return to the sender " >> > > There is only one Morphic UI loop process which repetitively cycles for > Morph stepping and the main interactive UI. Use "Tools > Process Browser" > to take a look at that process (priority=40) and its stack and you'll > WorldMorph>>doOnceCycle. If you are curious, you can put a "self haltOnce" > in that method and invoke it using "System > Enable halt/inspect once" and > it will spawn that fault in that cycle off to another process you can trace > through, while the main process continues to cycle. > > However if you perform a non-concurrent #wait or busy calculation, then > the UI loop is prevented from looping at its usual speed (see > #interCyclePause). > > cheers -ben > > >> >> Best, >> Laura >> >> On Tue, Jan 27, 2015 at 7:00 PM, Ben Coman <btc(a)openinworld.com> wrote: >> >>> Hi Laura, Can you provide some more context by pasting code for how you >>> expect both your UI and calculation methods to interact? What is the >>> application? >>> >>> cheers -ben >>> >>> On Wed, Jan 28, 2015 at 5:49 AM, Laura Risani <laura.risani(a)gmail.com> >>> wrote: >>> >>>> Hi all, >>>> Thank you for your answers. >>>> >>>> But i yet can't see how to implement the method i wanted, because #fork >>>> schedules the process and immediately returns but i'd like to wait and only >>>> then return the answer. >>>> >>>> >>>> Best, >>>> Laura >>>> >>>> On Tue, Jan 27, 2015 at 3:46 PM, Laura Risani <laura.risani(a)gmail.com> >>>> wrote: >>>> >>>>> Hi all, >>>>> >>>>> I need an object/method like this one >>>>> >>>>> Waiting>> wait : seconds >>>>> "i take the flow control during 'seconds' without halting image morphs >>>>> stepping/handling (as Delay>>wait: does) and then return to the sender " >>>>> >>>>> How can i implement it? >>>>> Where can i borrow for reuse an existing one from? >>>>> >>>>> >>>>> Best, >>>>> Laura >>>>> >>>> >>>> >>> >> >

Jan. 29, 2015

Re: [Pharo-users] New book for Pharo :)

by Werner Kassens

Hi HernÃ¡n, >We have to get better at communication. It doesn't work if all of us fork libraries. i guess i disagree, the occasional fork <g> can be freshening. >But I don't want to be forced to load the whole SciSmalltalk to use 3 methods in NumericalMethods. that's not really necessary. assuming that you want to also use the dhb-extensions, you can eg do something like: (ConfigurationOfSciSmalltalk project version:#stable)load: #('Math-DHB-NumericalExtensions' 'Math-Tests-DHB-Numerical'). "a MetacelloFetchingMCSpecLoader(linear load : linear load : 0.16 [ConfigurationOfSciSmalltalk] linear load : 1.0 [ConfigurationOfArbitraryPrecisionFloat] load : ArbitraryPrecisionFloat-nice.38 load : ArbitraryPrecisionFloatTests-nice.16 load : ExtendedNumberParser-nice.1 load : Math-DHB-Numerical-wernerkassens.30 load : Math-Tests-DHB-Numerical-wernerkassens.9 load : Math-DHB-NumericalExtensions-WernerKassens.5)" this loads additionally ArbitraryPrecisionFloat, but this is, i'd say, an unimportant bug in the config, that should get repaired occasionally. and ArbitraryPrecisionFloat is not that big. it's not really a problem. >Can you import the ConfigurationOfNumericalMethod from a common repository in SciSmalltalk? there could eventually be a little difficulty. you cant load both versions. of course one could work around that problem in the config, but 1. the config of scismalltalk is already complicated enough, that hardly anyone changing it can get things right there at their first attempt. 2.it would also complicate the _use_ of the config for the user, a big drawback imo. of course one could simply throw away the fork. but then one would need to throw away also some other packages. a third possibility would be to put all changes in the fork in an extra package that can be loaded on top of the original dhb. but that looks like a sizable enough task, that i at least will not do it. what do you think? werner

Jan. 29, 2015

Re: [Pharo-users] New book for Pharo :)

by Werner Kassens

Hi StÃ©phane, thanks to Msr Besset, to you and to the other people who made this possible. it's a fascinating book. werner

Jan. 29, 2015