June 2014 - Pharo-users - lists.pharo.org

Slots
by Bob Williams June 9, 2014

June 9, 2014

Camille and Marcus, thank you for your response. I thought something was missing, so the testing of Slots will be shelved for now; however, while it is in the planning stage, I would like to add some thoughts on targets and deliverable products (applications). I agree that most devices like the iPad and iPhone would not be suitable for development, they should be targets for application development and I would expand that list to include all devices, even micro-controllers. Look at the development process for the iPad and iPhone, the programming is done on a Mac using Xcode and testing is done first on the simulator running on the Mac and latter on the actual device. I find the Xcode environment inferior to Smalltalk's and by no stretch of the imagination is Objective-C a good substitute for Smalltalk. I think that development of application programs could be done far better with Smalltalk, provided that some tools were added to Smalltalk. Why not have the view, if it can be programmed in C then it can be programmed in Smalltalk. I think that the application process should be viewed as a series of steps culminating in the production of a product for sale or distribution: develop and test the program logic, test using constraints imposed by the target device, performance testing, test on the target device, and package for sale or distribution. A good examples of the second step where the constraints of the target is imposed are the word size and floating-point precision differences found in the target. If the development of the application is on a 64-bit computer then integer and floating-point calculated must be simulated for targets with smaller word size and for 32-bit floating-point or no floating-point processor. Implicit in those steps is the notion a gradual typing, the first uses the Smalltalk model to generically test the logic of the program, while the final step would require a fully compiled executable for some of the targets. I would argue that one reason that Smalltalk was not a commercial success was that you could not provide a fully compiled executable to the customer. The tools that the Smalltalk environment provides makes it a very productive application development environment, but of what use are they to the end user of the application, say a clerk or a business executive: why should any of the development tools be in the final product? It is clear that Slots will be used in the enforcement of typing at the instance variable level, but what about temporary variables? Can a compiler (machine not bytecode) be developed if temporary variables are not typed? Then there is the question of how to handle the elements of heterogeneous collections. I have more thoughts, but the above are related to Slots. Any comments? bw

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Pillar compile.sh
by Ben Coman June 8, 2014

June 8, 2014

Hi all, ./compile.sh can be passed a parameter to compile only a specific file rather than the whole book. Now I consider this probably only occurs during development with a human executing the script (rather than some CI process which will be processing the whole book) and I'm finding it useful to automatically fire off a PDF Viewer on the generated file, as per the line below tagged "ADDED". if [[ $# -eq 1 ]]; then dir=$(dirname "$1") # e.g., Zinc pier_file=$(basename "$1") # e.g., Zinc.pier pillar_one "$1" produce_pdf "${dir}" "${pier_file}" open "${dir}"/"${pier_file}".pdf # <----ADDED else pillar_all compile_chapters compile_latex_book fi Is this something others would find useful? or can you see issues with it? Having this mod makes my working area dirty, and 'git clean' blows it away - so I'd like to integrate something like it. Now the above works for me on OSX, but for flexibility to deal with other platforms, the "open" command could be replaced with an environment variable, and do nothing if environment variable does not exist. What do you think? cheers -ben

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Slots
by Bob Williams June 8, 2014

June 8, 2014

I am trying to duplicate the typed slot example in the paper "Flexible Object Layout". I did create the classes for TypedSlot and FloatSlot, but I am trying to find the best way to set the type for class FloatSlot to the class Float. In the example in the paper it appears to be set at the time the class is created however that does not seem to be an option when using PharoClassInstaller. I was thinking about using some form of lazy initialization, but is there a better way; a method anticipated by the Pharo 3 designers? I used: PharoClassInstaller make: [ :aSCB | aSCB superclass: Slot; name: #TypedSlot; slots: #(type); category: 'BW-Testing' ]. PharoClassInstaller make: [ :aSCB | aSCB superclass: TypedSlot; name: #FloatSlot; category: 'BW-Testing' ]. bw

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[ANN] Generating beautiful html books from Pillar
by Damien Cassou June 7, 2014

June 7, 2014

Nicolas Petton and I are proud to announce the possibility to create really nice HTML books from Pillar (I must thank https://github.com/GitbookIO/gitbook as well). The first book to get this nice layout is the Pillar documentation: http://damiencassou.gitbooks.io/pillar/introduction.pier.html -- Damien Cassou http://damiencassou.seasidehosting.st "Success is the ability to go from one failure to another without losing enthusiasm." Winston Churchill

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Slowness question
by Hilaire Fernandes June 7, 2014

June 7, 2014

Hi, Programmed sketch in DrGeo can be animated, for example like the script bellow. The "canvas do:" message forks the block so user is not blocked. At #udpate message the items and views (morph) are recomputed and refreshed . Before porting DrGeo to Athens, the animation was pretty fast, now it is very slow. Any idea from where it could come from? Thanks ---8<------ |canvas s stats points| points :=Array new: 12. stats := Array new: 12 withAll: 0. canvas := DrGeoCanvas new. 2 to: 12 do: [:i | points at: i put: (canvas point: i(a)0.1) (points at: i) square; color: Color blue. s := canvas segment: i@0 to: (points at: i). s color: Color red]. canvas do: [ 1 to: 10000 do: [:i| s := 6 atRandom + 6 atRandom. stats at: s put: ((stats at: s)+1). (points at: s) name: (stats at: s) asString; moveTo: s @ ((stats at: s) / 100). canvas update]. ---8<------ -- Dr. Geo http://drgeo.eu

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MorphTree behavior changed
by Hilaire Fernandes June 6, 2014

June 6, 2014

Hi, why when morph tree send updateList there is an announcement from the model? It was not the case before. Thanks Hilaire -- Dr. Geo http://drgeo.eu

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Re: [Pharo-users] PIllar >> #visitAnnotatedParagraph:
by Ben Coman June 5, 2014

June 5, 2014

Damien Cassou wrote: > On Sun, Jun 1, 2014 at 6:10 PM, Ben Coman<btc(a)openinworld.com> wrote: >> Yes. I am doing something similar. btw, is it a strong convention that Tex commands and environments are all lowercase? That is, should I force the annotation label in "\begin{note}" to lowercase, or should I pass that through unchanged. > > > I think you should not change anything. Is it up to the writer to do > something not stupid. > >>> For Markdown, we should probably have the same solution as for HTML. >> I had a hunt around and it seems that Markdown doesn't support paragraph styles. And the workaround specified here... >> http://stackoverflow.com/questions/1058933/can-i-define-a-class-name-on-par… >> >> apparently does not work on github... >> https://github.com/github/markup > > in pillar we have both Markdown and GithubMarkdown as export options. > So we can have a solution dedicated to github if required. > > >> But Hey! Check this out... >> https://github.com/github/markup/blob/master/CONTRIBUTING.md >> >> Maybe we could add a Pillar-->HTML processor to Github? > > > There should not be any technical problem to do that. Do you want to > try? I can help if you have problems. > > >> "If your markup is in a language other than Ruby, drop a translator script in lib/github/commands which accepts input on STDIN and returns HTML on STDOUT..." >> https://github.com/github/markup/blob/master/lib/github/markups.rb >> >> >> So it seems that Text and Markdown cannot produce different formatted paragraphs. > > for text it is clear. For Markdown I'm still not sure if it is > possible or not. Maybe a<div class=<annotation>> would work. > > >> In those two cases, I still lean towards putting the annotation label in the output, but I'm happy enough to leave it out. > > > for text I think we should not change the current export. For > Markdown, I leave the decision to you. > > I've uploaded the updates to make annotations more consistent, and added the \dothis LaTeX command being used in the PharoLaserGame tutorial. source annotation test # item 1 @@note anno1 @@dothis anno2 ## item 11 @@note anno3 ## item 12 @@dothis anno4 ## item 13 --to=pillar annotation test # item 1 @@note anno1 @@dothis anno2 # ## item 11 @@note anno3 # ## item 12 @@dothis anno4 # ## item 13 Now this output is not the same and the source. Should I try to fix this the same as I did for comments. --to=html <div class="container"> annotation test <ol><li> item 1 </li></ol> anno1 anno2 <ol><li> <ol><li> item 11 </li></ol> </li></ol> anno3 <ol><li> <ol><li> item 12 </li></ol> </li></ol> anno4 <ol><li> <ol><li> item 13 </li></ol></li></ol> </div> --to=markdown annotation test 1. item 1 ^M ^M anno1^M ^M anno2^M ^M 1. 1. item 11 ^M ^M anno3^M ^M 1. 1. item 12 ^M ^M anno4^M ^M 1. 1. item 13 btw, what are all these non-break-spaces "^M ^M" for? --to=markdown \begin{document}^M^M annotation test \begin{enumerate} \item item 1 \end{enumerate} \begin{note} anno1 \end{note} \dothis{ anno2 }\begin{enumerate} \item \begin{enumerate} \item item 11 \end{enumerate} \end{enumerate} \begin{note} anno3 \end{note} \begin{enumerate} \item \begin{enumerate} \item item 12 \end{enumerate} \end{enumerate} \dothis{ anno4 }\begin{enumerate} \item \begin{enumerate} \item item 13 \end{enumerate} \end{enumerate} ^M^M\end{document}^M --to=text annotation test 1. item 1 anno1 anno2 1. 1. item 11 anno3 1. 1. item 12 anno4 1. 1. item 13 cheers -ben

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Re: [Pharo-users] Saving Seaside components to Monticello
by phil＠highoctane.be June 4, 2014

June 4, 2014

Le 4 juin 2014 21:17, "spearson" <sam(a)xofz.com> a Ã©crit : > > Hello, > I created a Monticello repository on Smalltalkhub. When I commit my > package, my Object subclasses all get saved to the repository. However, > only my WAComponent subclass class definition gets saved (instance/class > variables). The renderContentOn: and updateRoot: methods are not getting > saved to the repository. Is this because they are overridden methods and > not new methods? > > How can I save my renderContentOn: and updateRoot: methods to the > repository? > > Strange. Never had this issue with Seaside. Phil > > -- > View this message in context: http://forum.world.st/Saving-Seaside-components-to-Monticello-tp4761679.html > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > >

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Saving Seaside components to Monticello
by spearson June 4, 2014

June 4, 2014

Hello, I created a Monticello repository on Smalltalkhub. When I commit my package, my Object subclasses all get saved to the repository. However, only my WAComponent subclass class definition gets saved (instance/class variables). The renderContentOn: and updateRoot: methods are not getting saved to the repository. Is this because they are overridden methods and not new methods? How can I save my renderContentOn: and updateRoot: methods to the repository? -- View this message in context: http://forum.world.st/Saving-Seaside-components-to-Monticello-tp4761679.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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HTML5 Generation
by Larry Staton Jr. June 4, 2014

June 4, 2014

Iâm writing an implementation of Webmachine[1] in Pharo and Iâm at the point where I need to generate some resources. Webmachine does not care how you represent your resources, so Iâm looking for a way to represent my resources in text/html (or application/xml+xhtml). In Ruby, I use ROAR[2] with Webmachine to represent my resources[3]. I really like how Seaside lets you programmatically construct HTML, but Iâm not sure if I can just pull in the HTML generation and leave out the rest. Is this possible or do I have to recreate ROAR in Smalltalk (which isnât a bad idea!)? Thanks! /ls [1] http://smalltalkhub.com/#!/~statonjr/DLWebmachine [2] https://github.com/apotonick/roar [3] https://speakerdeck.com/statonjr/hypermedia-apis-with-webmachine-and-roar Larry Staton Jr. https://keybase.io/statonjr

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