- Pharo-users - lists.pharo.org

Problem compiling method source - genPushLiteral: out of range
by Patrick Scherer Aug. 18, 2017

Aug. 18, 2017

Hello everyone, I'm trying to move some of our code from VA Smalltalk over to Pharo using a self-made importer and have encountered the following issue I need help with: A few of our methods are very large in size. For example, we have a method that creates a huge Dictionary with specific keys and values on startup and stores it in a class variable for immediate access. This method works fine in VA Smalltalk, but if I attempt to compile the same source code in Pharo (programmatically or via copy paste using the interface) I'm getting '*Error: genPushLiteral: index index 256 is out of range 0 to 255*' in OpalEncoderForV3PlusClosures. I'm getting the same error for some other methods. If I understand this correctly, the method simply exceeds the maximum number of literals, but it works fine in VA Smalltalk. Is there a way to increase this limit or bypass this issue without having to rework our implementation? Offtopic: Does anybody if there is a package which adds a support layer for imported VA Smalltalk code? I know there is one for Pharo->VA on VASTGoodies but I couldn't find one for the other way around. Kind regards, Patrick Scherer

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Encoding Login information in your image (safely)
by Tim Mackinnon Aug. 18, 2017

Aug. 18, 2017

Hi - Iâm struggling to find something that I saw that discussed this issue kind of. In my image (its actually a headless one - but this could apply to a fat image too) - I build an application that needs access to a service (in this case an S3 bucket). The AWS library Iâm using (but others are similar) has an AWSLogin class singleton where I can specify a username and password. So in a playground I can do that and test it all works etc. However, for deployment its never a good idea to encode this info into your code (particularly if you use Iceberg and GitHub) - SO, I am using secret variable support in GitLab - which Iâve seen many projects do in other languages. This way, I type in those details into an encrypted place in the CI and it then exposes them as temporary variables when I build my system (so far so good). Now in my build - I run a little script like this and pass on those variables (neatly, Gitlab doesnât show their values in its logs): ./pharo Pharo.image --no-default-preferences --save --quit st config.st \ "{â$USER'. â$PWD'}" In config.st I then extract these command line parameters (the ST handler nicely exposes the extra parameter array so I didnât have to do anything custom) "Expect image to be called with params as a last arg array" config := Array readFrom: Smalltalk arguments last. user := config at: 1. pwd := config at: 2. DBConfig default accessKey: user; pKey: pwd; yourself. So it all looks pretty good so far - however it occurs to me that if you get hold of a .image and were to browse all of the Strings - e.g. ./pharo Pharo.image eval "(ByteString allInstances)â I think you would ulimtately find those strings unless the Class encrypts them in some way right? So Iâm wondering why we donât have an EncryptedString object for just this (Iâve seen lots of cryptography libraries etc), but isnât this quite a common thing to deal with? And should Pharo provide something that library writers adopt to encourage better image safety? Or am I wrong in my analysis? Tim

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[ANN] PharoLambda a demo of Pharo running on AWS Lambda
by Tim Mackinnon Aug. 17, 2017

Aug. 17, 2017

Hi - Iâve been playing around with getting Pharo to run well on AWS Lambda. Itâs early days, but I though it might be interesting to share what Iâve learned so far. Usage examples and code at https://gitlab.com/macta/PharoLambda <https://gitlab.com/macta/PharoLambda> With help from many of the folks here, Iâve been able to get a simple example to run in 500ms-1200ms with a minimal Pharo 6 image. You can easily try it out yourself. This seems slightly better than what the GoLang folks have been able to do. Tim

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Preference to for not showing hidden files in the FileBrowser?
by H. Hirzel Aug. 17, 2017

Aug. 17, 2017

Hello Is there a preference for not showing hidden files in the FileBrowser? I checked menu 'System' -> 'Settings' searching for 'hidden'. This is on Ubuntu, i.e. hidden files start with a dot. Thank you for the answer in advance Hannes

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Re: [Pharo-users] PharoJS
by andrew glynn Aug. 17, 2017

Aug. 17, 2017

I was wondering: a) I'm assuming PharoJS would be much like Amber but inside the Pharo VM. b) How much of the Amber codebase could be re-used for it? I'm interested on the one hand, mainly due to the demand for Angular code in the browser (jQuery is great in Seaside, but many clients are looking for Angular recently), and my distaste for debugging JavaScript. Amber is ok but lacks the depth of tooling in Pharo, and isn't keeping up with the (constant) breaking changes in node and NPM. (Not that I blame the developers of Amber, it's a problem with the mindset of the developers in the JavaScript ecosystem - the way that Angular2 is almost completely different from Angular is an example of the lack of interest in the existing user base). The problem I see is that PharoJS would have the same issues. As a result it would not only be a fair amount of work to accomplish, it would be far more to maintain. The Pharo ecosystem is based on an entirely opposite mindset to the JS ecosystem - a few very good frameworks and a reasonable number of very good libraries, resulting in highly maintainable code even on projects with only one or two developers. On top of that it would have to deal with the issues with JS itself that make writing decent tools virtually impossible. Andrew Glynn -----Original Message----- From: Pharo-users [mailto:pharo-users-bounces@lists.pharo.org] On Behalf Of pharo-users-request(a)lists.pharo.org Sent: Thursday, June 22, 2017 8:41 AM To: pharo-users(a)lists.pharo.org Subject: Pharo-users Digest, Vol 50, Issue 108 Send Pharo-users mailing list submissions to pharo-users(a)lists.pharo.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.pharo.org/mailman/listinfo/pharo-users_lists.pharo.org or, via email, send a message with subject or body 'help' to pharo-users-request(a)lists.pharo.org You can reach the person managing the list at pharo-users-owner(a)lists.pharo.org When replying, please edit your Subject line so it is more specific than "Re: Contents of Pharo-users digest..."

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Re: [Pharo-users] Pharo 6.0 and 6.1 64 bit freeze on MacMini
by Stephan Eggermont Aug. 16, 2017

Aug. 16, 2017

Please try starting your Pharo image with a new squeak vm. I remember Tobias posting something on a full screen bug fix about a year ago, and don't know what happened with it. It was around the same time as his hiDPI fix, which triggered some garbage collection issue at the time. Some part of that was then reverted. Stephan

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Raffle Results of "Live Programming in Smalltalk development environments survey + raffle"
by Juraj Kubelka Aug. 16, 2017

Aug. 16, 2017

Dear Smalltalkers, thank you again for participating in our survey. We are currently analyzing the results. Here, we would like to announce winners of the survey raffleâ¦ and winners are: - Craig Latta, and - Gabriel Omar Cotelli Congratulations! :-) The raffle draw was recorded and is available at: https://youtu.be/cRfPAAeF-xw <https://youtu.be/cRfPAAeF-xw> We will contact the winners in a private email in order to deliver the books to them. Regards, Juraj Kubelka, Romain Robbes, and Alexandre Bergel

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Glamour: update presenter with new text
by Hilaire Aug. 16, 2017

Aug. 16, 2017

Hi, In the method bellow, when the method is recompiled, the presenter's text is still the same (i.e. select another method, then the modified method: the former source code is still presented). How to request an update of the presenter's text with the newer method source? sourceIn: composite ^ composite text title: 'Source code' translated; display: [ :aCompiledMethod | aCompiledMethod sourceCode ]; act: [ :presentation :compiledMethod | compiledMethod methodClass compile: presentation text] on: $s entitled: 'Save' translated Thanks Hilaire -- Dr. Geo http://drgeo.eu

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S8 Smalltalk tools - Android
by Elvio Fernandez Aug. 15, 2017

Aug. 15, 2017

We've published an enviroment for social development as an Android Application! Now we have support for Object Technology on Android devices. https://play.google.com/store/apps/details?id=net.smalltalking.s8.jx8 Greetings Elvio

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[ANN] VistaCursor now scalable
by Torsten Bergmann Aug. 15, 2017

Aug. 15, 2017

Hi, Mike Davis asked about changing the cursor size as he runs Pharo with Windows 10 on a Microsoft Surface @ 2736 x 1824 dpi. He discussed on Discord and said that all of the display is well scaled, except the mouse cursor which is too small for him. As the Windows VM supports larger cursors I added some support to my loadable goodie package "VistaCursor" now. So there is now a new setting to scale the provided cursors (see screenshots). Either freshly load the package from catalog or update to "VistaCursors-TorstenBergmann.5" if you want to check this out. This might be also be useful for presentations. Have fun T.

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