January 2016 - Pharo-users - lists.pharo.org

Pharo + git workflow
by Norbert Hartl Jan. 28, 2016

Jan. 28, 2016

I'm eager to try a new project with some git repositories. But to be honest I don't really get it. Searching the web there is lots to find but nothing actual. I don't understand if it is ok to use a ConfigurationOf or if it only works with a BaselineOf. And how do you specify the repository in a ConfigurationOf in order to be able to work locally as well as having jenkins pull everything automatically? Same goes for dependent projects. Are there any insights to this or pointers to an up-to-date documentation? thanks, Norbert

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CommandLineHandler surprises
by Jimmie Houchin Jan. 28, 2016

Jan. 28, 2016

Hello, I am reading the Deep Into Pharo book. I have been playing with the CommandLineHandler. I have been surprised by some of its behavior. Though I have used Pharo a long time. I have not played with it from the command line. I am a very long time Linux user and am very comfortable on the command line. When according to the book I execute: ./pharo Pharo.image --list It will provide me with a list of the available handlers. I did not expect it to open up an image for me. That is not what I expected or wanted. I did not intend to use an image at this time. I am on the command line and expecting to see results there. Not for a new window to pop up. As of yet I have always opened up Pharo on the command line. I have yet to use PharoLauncher, but do intend to do so soon. So I am comfortable with Pharo opening up a new window and image from the command line. However it is very unintuitive and seemingly unnecessary to open up an image for these command line handlers. I naively think they should simply return the results. Now if that requires opening a headless image for a moment and close, then fine. --list --help --version --copyright eval printVersion Some other handlers I do not know if opening an image is the correct default. I have not spent the time learning them yet. Thanks. Shalom Aleichem. Jimmie

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Pharo 5 new vm crash on window resize
by Johan Fabry Jan. 27, 2016

Jan. 27, 2016

Hi all, this just happened to me: I opened a new image (todayâs build), resized it and the VM segfaulted. I am on MacOS. crash.dmp is in attachment. I have been unable to reproduce, sadly. Is this a known issue or should I add a new bug report ? ---> Save our in-boxes! http://emailcharter.org <--- Johan Fabry - http://pleiad.cl/~jfabry PLEIAD and RyCh labs - Computer Science Department (DCC) - University of Chile

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Re: [Pharo-users] Regex usage question
by Dimitris Chloupis Jan. 26, 2016

Jan. 26, 2016

Nope you should not apologize , you are not expected to read class comments before asking questions here. You will find a dedicate chapter on regex on Deep Into Pharo which you can download as free PDFs from the Pharo website. Pharo regex is very similar to other languages , AFAIK it's nothing special. I used it for language parsing from Pharo to Python syntax. But if you really want to do some complex parsing I highly recommend powerful parser like SmaCC and PettitParser , the good news is that they use syntax very similar to regex but far more readable, flexible and powerful. I used SmaCC which comes with good documentation and ton of examples , I think PettitParser is similar story. On Tue, 26 Jan 2016 at 19:53, Cameron Sanders via Pharo-users < pharo-users(a)lists.pharo.org> wrote: > Ah! I found the RxParser class methods for syntax and usage. I missed > these previously -- my apologies. > > On Tue, Jan 26, 2016 at 12:40 PM, Cameron Sanders <camsanders(a)aol.com> > wrote: > >> Hi All. Nice work on Pharo! >> >> We are starting to use the Regex pattern matching by allowing users to >> write "rules" using patterns. For example, our data lookup processing can >> include a 'Per' rule that takes a key such as 'xPerY' and returns the value >> of (data at: #x) / (data at: #y). Until recently, all binary-operators such >> as Per were performed with a simple string matches. But in order to >> generalize, we are moving regex patterns. >> >> Can someone tell me where the language-spec is for Regex-Core that is >> included in Pharo? Is this in the style of sed, awk, or ... ? If possible, >> how do I indicated that I want several sub-string replacement sections? >> >> Thanks in advance. >> -Cam >> > >

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Regex usage question
by Cameron Sanders Jan. 26, 2016

Jan. 26, 2016

Hi All. Nice work on Pharo! We are starting to use the Regex pattern matching by allowing users to write "rules" using patterns. For example, our data lookup processing can include a 'Per' rule that takes a key such as 'xPerY' and returns the value of (data at: #x) / (data at: #y). Until recently, all binary-operators such as Per were performed with a simple string matches. But in order to generalize, we are moving regex patterns. Can someone tell me where the language-spec is for Regex-Core that is included in Pharo? Is this in the style of sed, awk, or ... ? If possible, how do I indicated that I want several sub-string replacement sections? Thanks in advance. -Cam

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Image Cleaner no longer useful?
by Maximiliano Tabacman Jan. 25, 2016

Jan. 25, 2016

Hi, and sorry if this has already been discussed. In Pharo 3, I used to be able to do: ImageCleaner cleanUpForProduction and that would correctly remove a lot of unneeded code in the image when preparing for a productive release.Then I would save the cleaned image, and since it had been cleaned, it would be smaller than the original development image (say from 60 mb to 25 mb).This process would take about 2-3 minutes. Then, in Pharo 4 it seems some changes were made here, since the same process took a lot more, like 20 minutes. When I first tried Pharo 5, I was happy to see that it was again down to 2-3 minutes. And here comes my question...Why is it that since some 2 months ago (maybe more), the Pharo 5 images once again require like 20 minutes to complete the cleanUpForProduction process? Also, and this is the most relevant to me, it no longer reduces the image size.So if I want to release a Pharo 5 version based on the latest images, I would be shipping a product that is more than twice the size of previous public versions of my software! Thanks for any insights into this. If it is a known bug, I would like to know if there is any workaround, or alternative objects that I should be using for the process.Also, if it would help for me to run any tests in particular to share and help in fixing this, please let me know.

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[ANN][Invite] Pharo Sprint 29 Jan
by marcus.denker＠inria.fr Jan. 25, 2016

Jan. 25, 2016

We will organize a Pharo sprint / Moose dojo Friday, 11th September, starting at 10:00am. (Local Time Lille). It will be at the Inria Lille, Building B, third floor (RMoD offices) and at the University of Chile, Santiago de Chile. Remotely, you can join us on Slack or the IRC channel #pharo on irc.freenode.net server. During the sprint, we will try to synchronize local and remote Pharo sprinters. As the building is not open to the public, please contact us before if you plan to come.

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OSWindowSDL2
by Edwin Ancaer Jan. 24, 2016

Jan. 24, 2016

I'm not a smalltalk expert, but from time to time I like to do some experiments. Recently, we talked about making a small 2D-Game, to do something else than a traditional CRUD database application. I downloaded pharo 4.0 for Linux (the default version). My OS version is 3.13.0-46-generic #79-Ubuntu: Then I installed SDL2 with apt-get. All seemed to he OK. I started pharo, and executed the following code in the playground: |ex | ex := SDL2Example new . ex osWindow . I got an error: Failed to find SDL2 library. , Should I have been doing some extra initialization to load the library in Pharo, or is there something else that I forgot to do? Kind regards Edwin

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4th Chapter of Updated Pharo by Example ready for review.
by stepharo Jan. 24, 2016

Jan. 24, 2016

4th Chapter of Updated Pharo by Example ready for review. https://ci.inria.fr/pharo-contribution/view/Books/job/UpdatedPharoByExample… This one was way simpler than the PharoTour and FirstAplication, so I imagine that the review will be easier too. Stef Not thinking too much, just doing.

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3rd Chapter of Updated Pharo by Example ready for review.
by stepharo Jan. 24, 2016

Jan. 24, 2016

3rd Chapter of Updated Pharo by Example ready for review. https://ci.inria.fr/pharo-contribution/view/Books/job/UpdatedPharoByExample… Stef Not thinking too much, just doing.

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