- Pharo-users - lists.pharo.org

Re: [Pharo-users] Lost class migrating from 3.0 to 4.0

by stepharo

Hi Hilaire > I am migrating a web application from 3.0 to 4.0. > I noted one class can't get load! It is however present in the > Squeaksource repo. you did not get a warning that the superclass is not loaded I imagine. So this is strange. I never got such problem. Yesterday I got a bug that I cannot publish on SmalltalkHub repo with my password and the one of olivier too. So mega strange. > > The class is a WAComponent, it is the entry point of the application > with all the initializations. All the libraries dependencies are > satisfied. I don't see reason why the class can't be load, and there is > no such warning. Trying to load by hand this sole class does not work > either. Uh Did you try to copy past the definition from the external package browser? > > Did any of you meet such problem with Pharo 4.0 > > Hilaire >

March 5, 2016

Re: [Pharo-users] PharoLauncher eventual slowdown

by stepharo

Hi nicolai what you use it for? I'm intrigued. Stef Le 4/3/16 18:59, Nicolai Hess a Ã©crit : > > > 2016-03-04 17:15 GMT+01:00 Ben Coman <btc(a)openinworld.com > <mailto:btc@openinworld.com>>: > > Hi Peter, I see you had this problem 12 months ago. > http://lists.pharo.org/pipermail/pharo-users_lists.pharo.org/2015-February/… > > What you can try is in development mode, closing the PharoLauncher > window, nil out class variables and garbage collect, then check what > instances remain of PharoLauncher classes. > > cheers -ben > > > > I use pharo launcer a lot (on windows) and I did not see any slow down. > But I don't use it for anything else then launching the images. > Do you notice the slow down by launching images or do you use the > PharoLauncher image for anything else? > > > On Fri, Mar 4, 2016 at 6:42 PM, Peter UhnÃ¡k <i.uhnak(a)gmail.com > <mailto:i.uhnak@gmail.com>> wrote: > > Yeah I saw that when he was in Prague (incidentally that's where > my launcher > > slowdown started :)). > > > > I've removed write access and will report back in couple of days. :) > > > > Thanks, > > Peter > > > > On Fri, Mar 4, 2016 at 11:24 AM, Damien Cassou > <damien.cassou(a)inria.fr <mailto:damien.cassou@inria.fr>> > > wrote: > >> > >> Hi Peter, > >> > >> Peter UhnÃ¡k <i.uhnak(a)gmail.com <mailto:i.uhnak@gmail.com>> writes: > >> > I've been using Pharo Launcher for quite a while and problem > that I am > >> > constantly encountering is that launching of it becomes > slower and > >> > slower. > >> > >> StÃ©phane, in CC, reported the same months ago on OS X. I don't > know if > >> StÃ©phane still experiences the problem. Could you please try to > remove > >> write access to the .image and .changes files? > >> > >> -- > >> Damien Cassou > >> http://damiencassou.seasidehosting.st > >> > >> "Success is the ability to go from one failure to another without > >> losing enthusiasm." --Winston Churchill > > > > > >

March 5, 2016

Re: [Pharo-users] PharoLauncher eventual slowdown

by stepharo

> Yeah I saw that when he was in Prague (incidentally that's where my > launcher slowdown started :)). I'm a bug attractor. I can crash yosemite in 0.5 s: drag and drop two files on the desktop and bam you get the loggin screen :) > > I've removed write access and will report back in couple of days. :) > > Thanks, > Peter > > On Fri, Mar 4, 2016 at 11:24 AM, Damien Cassou <damien.cassou(a)inria.fr > <mailto:damien.cassou@inria.fr>> wrote: > > Hi Peter, > > Peter UhnÃ¡k <i.uhnak(a)gmail.com <mailto:i.uhnak@gmail.com>> writes: > > I've been using Pharo Launcher for quite a while and problem > that I am > > constantly encountering is that launching of it becomes slower and > > slower. > > StÃ©phane, in CC, reported the same months ago on OS X. I don't know if > StÃ©phane still experiences the problem. Could you please try to remove > write access to the .image and .changes files? > > -- > Damien Cassou > http://damiencassou.seasidehosting.st > > "Success is the ability to go from one failure to another without > losing enthusiasm." --Winston Churchill > >

March 5, 2016

Re: [Pharo-users] PharoLauncher eventual slowdown

by stepharo

Same here. 3 min to launch So I cloned the laucnher from time to time and it is a mess :) Stef Le 3/3/16 21:56, Peter UhnÃ¡k a Ã©crit : > Hi, > > I've been using Pharo Launcher for quite a while and problem that I am > constantly encountering is that launching of it becomes slower and slower. > > Up until now I've solved it by writing a bash script that downloads > the launcher fresh and reconfigures it. And then I've executed the > script about once a week. > > But I am little bit fed-up by itâ¦ is this a common behavior? Or is it > constrained to my machine? > > For example, if I execute the following (so I can time it) > time /opt/pharo-vm/cog/pharo --nodisplay --textenc UTF-8 > /opt/pharo-launcher/PharoLauncher.image eval '1+1' > > (also I have right now about ~27 images in the Launcher) > > fresh download (yesterday): ~0.49s > today: 0.91s (almost double) > > and in a week it will be be maybe 10 seconds. > > I can just setup cronjob that resets pharo launcher every day, but a > systemic solution would be better. > > Thanks, > Peter

March 5, 2016

Re: [Pharo-users] Little how to

by stepharo

Tx This is a cool challenge Le 3/3/16 13:08, Sven Van Caekenberghe a Ã©crit : >> On 03 Mar 2016, at 09:23, stepharo <stepharo(a)free.fr> wrote: >> >> Hi guys >> >> for the mooc I would like have a list of how to that students should look in the system and implement. >> The idea is to show to the participants that Pharo is open and that they can find information. >> For example, >> - extracting a sprite from a png file >> - access a time service of the web > Time is soo simple that there is no real need for a true web service and such a service would be trivial anyway (yet I did not find any public/free ones). > > Here is one way to do it: > > | stream unixTime | > stream := nil. > [ > "RFC 868 TCP protocol https://en.wikipedia.org/wiki/Time_Protocol " > stream := ZdcSocketStream openConnectionToHostNamed: 'time.nist.gov' port: 37. > unixTime := (stream next: 4) asInteger ] > ensure: [ stream ifNotNil: [ [ stream close ] on: Error do: [] ] ]. > DateAndTime fromUnixTime: unixTime. > > > The real stuff is SNTP though > > http://en.wikipedia.org/wiki/Network_Time_Protocol > http://tools.ietf.org/html/rfc2030 > > which is implemented in ZTimestamp and which can do much more: > > ZTimestampSNTPClient new remoteClock. > > Sven > >> Now I would love to get your ideas and their solution. >> >> Stef >> >> >> > >

March 5, 2016

Re: [Pharo-users] Call about Numerical Methods in Pharo :)

by stepharo

Le 3/3/16 06:25, HernÃ¡n Morales Durand a Ã©crit : > Hi Stef, > > For bioinformatics research it would be **really** nice to have: > > - Tree creation algorithms: UPGMA, WPGMA. > - MCMC methods: Metropolis-adjusted Langevin algorithm (MALA and > SMMALA), Metropolis-coupled MCMC (MC3) would enable Bayesian > inferences and to work with evolution of genes. I cannot tell how > important is to have such algorithms implemented in Smalltalk. > - Mahalanobis distance for analyzing bacterial plasmids. > - Random Forest is used a lot for gene expression, protein-protein > interaction predictions, genome-wide association studies, etc . For > the argument "let's use FFI for it" please remember many of these > methods are extended, like enriched random forest, for research with > specialized data. Yes we need random forest for our untangler too. > > There are implementations of naive Bayes classifier in > NaturalSmalltalk (which could be adapted to SciPharo) > http://smalltalkhub.com/#!/~hernan/NaturalSmalltalk > <http://smalltalkhub.com/#%21/%7Ehernan/NaturalSmalltalk> Thanks! First we should clean and move forward SciPharo > > As a side note I found an interesting history report of SciPy. > From the slide 9 onwards: > > http://sssslide.com/www.slideshare.net/shoheihido/sci-pyhistory Yes this is really interesting. I was wondering what is the NumPy Array exactly page 34 Do you think that this is something like WordArray a kind of Array with typed elements? > > Presentation shows SciPy history (credited contributors with pictures, > very nice!). > As you can se they even have a Foundation NumFOCUS for raising money. > > HernÃ¡n > > 2016-03-02 10:17 GMT-03:00 stepharo <stepharo(a)free.fr > <mailto:stepharo@free.fr>>: > > Hi guys > > I met Didier Besset and we had a great hacking session and > discussions with Serge Stinckwich. > Didier would like to help Pharo and the numerical part of it. > ***Big thanks*** Didier. > > We would like to do several things: > > - Work on "Hows to" > The numerical methods in Pharo is good but the gap between > us and the math is too large :) > so the idea is to have a series of "how to ..." > - histomgram (simple, based on distribution) > > - Improve the SciPharo/NumPha (previously SciSmalltalk) library > This morning we started to implement a > ComponentPrincipalDecomposition by combining two of the > objects available in SciPharo. > Then we started to enhance the distributions to make sure > that we can plug other distribution for having > controlled random number. > > - Do a public call to know what is missing for you: this is > this mail :) > Didier would like to work on concrete cases. I love that attitude > So tell us :) > > Hernan ?? > Alex: ?? pvalue? better distribution? > Vincent: covariance? CPA? > Philippe: times series > Serge R frames? > Sami: Better random number and various distributions? > > - Organise a two day lectures with practices on concrete case > in September with a recording session. > Either at IRD Bondy or Lille. > > - Make sure that the Numerical Method book will get on lulu :) > with a better cover and title :) > > > Stef > > >

March 5, 2016

Re: [Pharo-users] Using the new OSProcess still no Stdout string

by john pfersich

Well, I have to take back the comment on command:. I have this code snippet that gets output from a command: | p d | p := (PipeableOSProcess command: 'netstat -a | grep LISTEN | grep 27017'). p keepInitialStdOutOpen: true. d := Delay forMilliseconds: 500. d wait. [Transcript show: (p next: 300); flush. p isComplete] whileFalse: [d wait]. Transcript show: 'Error output'; cr; show: (p errorUpToEnd). p closeOutput. The netstat takes forever on a Mac, which is why the delays are so long. The On Friday, March 4, 2016, john pfersich <jpfersich(a)gmail.com> wrote: > You want to use waitForCommand: instead of command:, like > > Transcript show: (PipeableOSProcess waitForCommand: 'whoami') output > > command: doesn't wait for output and is useful only for commands that > don't return anything. It's kind of useless for anything that returns > values. I haven't tried this on Pharo 5, I've gotten it to work on Pharo 4. > > > > On Friday, March 4, 2016, Dimitris Chloupis <kilon.alios(a)gmail.com > <javascript:_e(%7B%7D,'cvml','kilon.alios(a)gmail.com');>> wrote: > >> I once reported a bug for OSProcess on MacOS >> >> >> https://pharo.fogbugz.com/f/cases/16944/OSProcess-stdout-is-not-returned-ba… >> >> Still experience the same problem, is this suppose to be fixed with new >> OSProcess ? >> >> >>

March 5, 2016

Re: [Pharo-users] Using the new OSProcess still no Stdout string

by john pfersich

I just loaded the latest image and vm using curl get.pharo.org/alpha+vmLatest | bash and OSProcess and CommandShell seem to work OK. On Friday, March 4, 2016, john pfersich <jpfersich(a)gmail.com> wrote: > You want to use waitForCommand: instead of command:, like > > Transcript show: (PipeableOSProcess waitForCommand: 'whoami') output > > command: doesn't wait for output and is useful only for commands that > don't return anything. It's kind of useless for anything that returns > values. I haven't tried this on Pharo 5, I've gotten it to work on Pharo 4. > > > > On Friday, March 4, 2016, Dimitris Chloupis <kilon.alios(a)gmail.com > <javascript:_e(%7B%7D,'cvml','kilon.alios(a)gmail.com');>> wrote: > >> I once reported a bug for OSProcess on MacOS >> >> >> https://pharo.fogbugz.com/f/cases/16944/OSProcess-stdout-is-not-returned-ba… >> >> Still experience the same problem, is this suppose to be fixed with new >> OSProcess ? >> >> >>

March 5, 2016

Re: [Pharo-users] Call about Numerical Methods in Pharo :)

by stepharo

Thanks for this great list!!! Alex what would be cool is to sketch a test with some data some that like that it is a good incentive for didier. :) > Hi ! > >> - Do a public call to know what is missing for you: this is this mail :) >> Didier would like to work on concrete cases. I love that attitude >> So tell us :) > This is an excellent initiative! > I personally need the following: > - Shapiro-Wilk test to check for data normality > - Kruskal-Wallis to analyze differences in median values between samples > - Bonferroni-Dunn to support multiple comparison and controlling the group error rate > - Mann-Whitney U test is a nonparametric statistical test that operates over two samples of the same size. > > Cheers, > Alexandre >

March 5, 2016

(no subject)

by john pfersich

I tried to execute curl get.pharo.org/alpha+vm | bash I executed it 8 times and it terminated after downloading the image. I finally tried curl get.pharo.org/alpha+vmLatest | bash and it worked the first time. Is there a problem with the alpha+vm script? Trying to test OSSubprocess.

March 5, 2016