September 2016 - Pharo-users

JSON-RPC implementation
by Esteban A. Maringolo Sept. 17, 2016

Sept. 17, 2016

Does anybody implemented a JSON-RPC library for pharo? I don't see any listed here <http://json-rpc.org/wiki/implementations>, but maybe somebody is keeping it secret :) Regards! Esteban A. Maringolo

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Spec - Wrap-able Label
by Brad Selfridge Sept. 17, 2016

Sept. 17, 2016

How hard would it be to create a wrap-able label model? What would one have to do to create one? ----- Brad Selfridge -- View this message in context: http://forum.world.st/Spec-Wrap-able-Label-tp4915942.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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[ANN] RProjectConnector V2.1
by Blondeau Vincent Sept. 16, 2016

Sept. 16, 2016

Hello everyone, I am glad to announce the release of version 2.1 of the RProjectConnector. The binding between Pharo and R (https://www.r-project.org/) is now translated to UFFI and so to Pharo 6.0. You can call directly your R methods from Pharo. For example, with the famous iris clustering example: iris := 'eval' asREval: {RObject findVar: 'iris'}. 'plot' asREval: {(iris at: 'Petal.Length'). (iris at: 'Petal.Width'). (#pch -> 21). (#xlab -> 'length'). (#ylab -> 'Width'). (#bg ->((iris at: 'Species') collect: [ :value | {'red'. 'green3'. 'blue'} at: value ])). (#main -> 'Edgar Anderson''s Iris Data')}. iris inspect. To use it, you should install R and copy the R libraries near the Pharo VM (see the documentation on SmalltalkHub (http://smalltalkhub.com/#!/~VincentBlondeau/RProjectConnector) for how to proceed). Don't forget to relaunch Pharo after the installation to be able to use the connector. Only basic features are implemented yet, but you can participate to its extension! Cheers, Vincent Blondeau !!!************************************************************************************* "Ce message et les pi?ces jointes sont confidentiels et r?serv?s ? l'usage exclusif de ses destinataires. Il peut ?galement ?tre prot?g? par le secret professionnel. Si vous recevez ce message par erreur, merci d'en avertir imm?diatement l'exp?diteur et de le d?truire. L'int?grit? du message ne pouvant ?tre assur?e sur Internet, la responsabilit? de Worldline ne pourra ?tre recherch?e quant au contenu de ce message. Bien que les meilleurs efforts soient faits pour maintenir cette transmission exempte de tout virus, l'exp?diteur ne donne aucune garantie ? cet ?gard et sa responsabilit? ne saurait ?tre recherch?e pour tout dommage r?sultant d'un virus transmis. This e-mail and the documents attached are confidential and intended solely for the addressee; it may also be privileged. If you receive this e-mail in error, please notify the sender immediately and destroy it. As its integrity cannot be secured on the Internet, the Worldline liability cannot be triggered for the message content. Although the sender endeavours to maintain a computer virus-free network, the sender does not warrant that this transmission is virus-free and will not be liable for any damages resulting from any virus transmitted.!!!"

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letsencrypt smalltalkhub ?
by PAUL DEBRUICKER Sept. 15, 2016

Sept. 15, 2016

Hi - Has anyone looked into adding https://letsencrypt.org/ to the servers/vms Smalltalkhub runs on so we can have https access by default?

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Is there a way to enable the arrow keys in the method list in Nautilus in Pharo5
by PAUL DEBRUICKER Sept. 15, 2016

Sept. 15, 2016

I seem to remember that you used to be able to click on a method in the method pane of a browser and then use the arrow keys to navigate up and down in that list. Is there a setting I should flip to enable that now? If not how would one go about turning that on? Thanks Paul

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Cryptography packages
by Esteban A. Maringolo Sept. 15, 2016

Sept. 15, 2016

Hi there, What are the most maintaned/popular cryptography package for Pharo? Regards! Esteban A. Maringolo

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pillar questions
by Tudor Girba Sept. 15, 2016

Sept. 15, 2016

Hi, I see that in the new book template, we have both a book.pillar that includes the chapter files, and a pillar.conf that is mostly empty. Is pillar.conf still used? If yes, what should it contain? If I embed the chapters in a book.pillar and I render the whole book, the numbering of the second chapter starts from 1 (instead of 2) when I render in html. Any idea how to do it differently? Cheers, Doru -- www.tudorgirba.com www.feenk.com "Yesterday is a fact. Tomorrow is a possibility. Today is a challenge."

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What are the best practices for an open source project with Pharo?
by julius Sept. 15, 2016

Sept. 15, 2016

I'm new to Smalltalk, I did the Inria MOOC and really like the way of how to construct applications. Still I wonder how development teams approach development with Pharo. Currently I'm thinking of implementing a small idea of mine with Pharo since Seaside felt quite nice when I experimented a bit. The project would need to be open source because I want to apply for funding at a initiative that only supports open source projects. But then I don't have the feeling that the Monticello approach is the most inviting way to get funding or contributors considering everyone is used to Github. I found now the guide to Git with Pharo by Peter Uhnak (thanks for writing that post!) so maybe this would be a good solution... Searching for best practices I read about some projects that make sure developers always get a new image every day, how could that be implemented without too much hassle of needing a server with some kind of build system. *tl;dr*: how could and should I approach the development of an open source project with Pharo, considering acceptance of Monticello usage and sharing of pharo images? -- View this message in context: http://forum.world.st/What-are-the-best-practices-for-an-open-source-projec… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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[ann] pillar support in gtinspector
by Tudor Girba Sept. 15, 2016

Sept. 15, 2016

Hi, I updated the Pillar support in GTInspector. Some of the extensions already exist in the default Pillar #development version. If you want to play with the full support, you can load it like this: Gofer new smalltalkhubUser: 'Moose' project: 'PetitParser'; package: 'PetitAnalyzer'; package: 'PetitIndent'; package: 'PetitIslands'; smalltalkhubUser: 'Moose' project: 'GToolkit'; package: 'GT-InspectorExtensions-Pillar'; load Then you can just inspect a book folder and you get this: I did not integrate this in the main Pillar yet because this is an older implementation based on a limited island parser. As now Pillar has a full parser based on PetitParser, the next step is to move the highlighting logic to use this parser instead of the island parser. From my measurements, the speed of the two parsers is about the same, so from a user perspective there will be not much changes. It pains me that we are editing Pillar in outside tools, and now we should no longer have to do that. Of course, this is not the most ideal tool support for Pillar but I think it is a reasonable start. Cheers, Doru -- www.tudorgirba.com www.feenk.com "Problem solving should be focused on describing the problem in a way that makes the solution obvious."

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Extending live coding beyond Pharo
by Dimitris Chloupis Sept. 15, 2016

Sept. 15, 2016

Live coding on Pharo is great, easy , simple and working out of the box. An extremely useful tool to be able to code an application while it runs, change and improve code with no interruptions. However there will be cases that Pharo wont be enough, that can be because pharo code is not as fast as you want it to be, or plainly you found a great library in C or C++ you wanna use from Pharo and there is literally a ton of them. However there is a catch , you kiss goodbye to live coding , you say hello to slow compiles and crashes because of bad memory management. Unfortunately that is the nature of C/C++. However live coding is gaining ground lately and more and more languages use it for super fast development. Some C++ coders have wondered whether they can bring this feature back to C++ and they have succeed. One example is Unreal game engine I am using .It can compile code on the fly and load it back even though the game is keep running. It calls this process "hot reloading". But for people that dont want to bother with Unreal there is this project http://runtimecompiledcplusplus.blogspot.gr/ The nice things about this is that not only it allows for live coding and very fast compiles but also its able to catch crashes with system exceptions, in a case of a crash the application keeps running because the crashy code is exchanged with the previous version of the code that did not crash and the crash is captured with an exception, you can use the debugger to debug it , correct the code and continue like you would with Pharo. There are disadvantages though, because RCPP makes no compromises when it comes to performance that means that it needs a very specific way of coding to accomodate for live coding, usually a main loop should exist and there is an API that must be used to track changes to the files and reload code on demand. But generally it does work very well and its also used by commercial projects all around the world. This will be a real nice addition to the toolbox of people who like to extend Pharo with C/C++ but do not want to live the comforts of live coding and have low tolerance for slow compile times and crashes.

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