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

Updated Pharo by Example
by stepharo Jan. 18, 2016

Jan. 18, 2016

Here is the reviewed Preface of UpdatePharoByExample. https://github.com/SquareBracketAssociates/UpdatedPharoByExample for typos... stef

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Pharo Sound does not work on Pharo 4
by Dimitris Chloupis Jan. 17, 2016

Jan. 17, 2016

even though it works fine for me in Pharo 5 (with the exception I have to restart the sound player because the primitive fails at times) in Pharo 4 I have no sound and no errors. Just Silence of the Lamps. opened bug report https://pharo.fogbugz.com/f/cases/17402/Pharo-Sound-does-not-work-on-Pharo-4

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[ann] gtdebugger in pharo 5.0
by Tudor Girba Jan. 17, 2016

Jan. 17, 2016

Hi, We are about to integrate in Pharo a new member of the Glamorous Toolkit: the GTDebugger. As this is a significant change that might affect your workflow, here is some background information to help you deal with the change. First, you should know that the change is not irreversible and it is easily possible to disabled the new debugger through a setting. However, please do take the time to provide us feedback if something does not work out for you. We want to know what can be improved and we try to react as fast as we can. A practical change comes from the fact that the variables are manipulated through a GTInspector, which makes it cheaper to maintain in the longer run. While the first thing that will capture the attention is the default generic interface, the real power comes from the moldable nature of the debugger. Like all other GT tools, GTDebugger is also moldable by design. This means that we can construct custom debuggers for specific libraries at small costs (often measured in a couple of hundred lines of code). Here is an introductory overview blog post that also includes some links for further reading: http://www.humane-assessment.com/blog/gtdebugger-in-pharo/ <http://www.humane-assessment.com/blog/gtdebugger-in-pharo/> Please let us know what you think. Cheers, Doru -- www.tudorgirba.com <http://www.tudorgirba.com/> www.feenk.com "Beauty is where we see it."

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Morphic is super slow
by Dimitris Chloupis Jan. 17, 2016

Jan. 17, 2016

So I decided to find out why Nuatilus delays to syntax highlight when I open ChronosManager I open my activity monitor to be amazed by the fact that pharo was consuming 30% of one of my cores. At the time I thought it was my fault because when my GUI steps I load from a png a form that I attack to a Morph. So I optomised that part loading all the pngs before hand , creating all the forms and during steping point only to the correct form. Nope still 30% ok change step time to 1 sec Nope still 30% ok delete step and step time alltogether Nope still 30% so the only explanation left is that pharo does not like I use images , which are not that big anyway , my whole image library is just 1 mb. So how I profile this ? Is there any way to find exactly where that 30% is consumed ? I tried to profile step and it retunred back with a mere 32ms , and I suspect thats the first step that loads the images , the second step would be much faster since it will just point to correct forms. So with a step of 32ms max and stepping once per second why a 30% CPU consumption ?

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Spec: Binding widgets how to
by Offray Vladimir Luna CÃ¡rdenas Jan. 17, 2016

Jan. 17, 2016

Hi, I'm starting to migrate my grafoscopio interface from only GT to Spec-Glamorous. I have kind of a working layout as you can see: and now I want to bind the different widgets so when I select a tree node I can show/edit its title and contents. I have read the Spec documentation on how to do this [1] and the ListSelectionModel code from Spec-Examples, but seems I'm missing something. [1] http://spec.st/docs/interactions/ So, I have a GrafoscopioGUI>>initializePresenter tree whenSelectedItemChanged: [ self updateHeader ] and GrafoscopioGUI>>updateHeader "update the displayed text associated to the header" ^ nodeHeader text: tree selectedItem. but when I move on the tree, nothing happens in the header panel at the bottom. What I'm missing? Thanks, Offray

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Better version of the counter exercise...
by stepharo Jan. 17, 2016

Jan. 17, 2016

Here is a better version of the counter exercise for the mooc. Stef

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(no subject)
by john pfersich Jan. 17, 2016

Jan. 17, 2016

When I try to download the latest stable Pharo 5, I get this: curl get.pharo.org/50+vm | bash % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 2901 100 2901 0 0 4931 0 --:--:-- --:--:-- --:--:-- 4925 Downloading the latest 50 Image: http://files.pharo.org/get-files/50/pharo.zip It never finishes, and if I try to unzip the file artifacts I get: Archive: image.zip End-of-central-directory signature not found. Either this file is not a zipfile, or it constitutes one disk of a multi-part archive. In the latter case the central directory and zipfile comment will be found on the last disk(s) of this archive. unzip: cannot find zipfile directory in one of image.zip or image.zip.zip, and cannot find image.zip.ZIP, period. What am I doing wrong? I tried the download with curl and wget. I'm on Mac OSX 10.10.5 (Yosemite).

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Getting Updated Pharo By Example out the door
by stepharo Jan. 17, 2016

Jan. 17, 2016

Hi guys I will read from start to end the book and we will get it on lulu. I plan to read up to 3 chapters per week. If you want to help for real this is the time. https://ci.inria.fr/pharo-contribution/view/Books/job/UpdatedPharoByExample… I rewrote the chapter on metaclass and a couple of other points because TranslucentColor is not available anymore. I will not rewrite what I do not like (I should now have written in the first place :). So I'm not looking for the perfect solution but to get something done. - First we will host http://www.pharoByExample.org at http://books.pharo.org - Second we will create a new entry for Updated pharo by example and (a new entry for numerical method book too). - Third Read and fix Updated Need a new cover (will ask lusy) -> done Stef

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Nautilus code critic panel non functional
by Dimitris Chloupis Jan. 16, 2016

Jan. 16, 2016

Used to work ok, now with the latest pharo 5 image its just seem to scan forever with no results relevant bug report https://pharo.fogbugz.com/f/cases/17401/

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[ANN] OSSubprocess first milestone
by Mariano Martinez Peck Jan. 15, 2016

Jan. 15, 2016

Dear all, I am happy to tell you I have a first prototype of the tool for executing OS processes: https://github.com/marianopeck/OSSubprocess As I said many times, the main idea was to be as much as possible FFI-based, only for executing OS commands and, from my point of view, a better end-user API. Also, as for the first step, I had to focus on Linux/OSX. I would like to thank Pharo Consortium for the sponsor of this development effort. Here is the first milestone! There are many things on my to-do but I think the code is ready for some usage, testing, code review and feedback! All classes and all methods have comments and I have quite some unit tests. All tests are green in my OSX and a CentOS box. *Important: you CANNOT have OSProcess installed in the same image as OSSubprocess. This is because I am reusing his SIGCHLD handler and for the time being both cannot coexist. * Keep in mind that the tool may be unstable and that MAY mean a VM crash. So use with care, mostly the first time. If all tests passes, then there are much less chances of something going bad. Important disclaimer: my tool (OSSubproccess from now onward) is HIGHLY influenced by a subset of the OSProcess project. There are parts which I even simply copied and adapted them (OSSPipe, OSSAttachableStream, OSSUnixProcessExitStatus). Other parts, I took them as inspiration (the idea of ThisOSProcess representing the VM process, the child watcher, and many others). In addition, I AM STILL USING (maybe as a first step?) some of the OSProcess PLUGIN (not OSProcess image side), such as the SIGCHLD handler or the creation of pipes. In github url you have all the documentation of the project, included how to install it and use it. *Finally, if you test it in a OS different than OSX and CentOS please share with me the results (about the tests).* Tomorrow the ConfigurationOf should also appear in the Catalog of Pharo 5.0. Any feedback is appreciated. Best, -- Mariano http://marianopeck.wordpress.com

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