January 2020 - Pharo-users - lists.pharo.org

EXIF / JPEG metadata
by Alistair Grant Nov. 30, 2025

Nov. 30, 2025

Hi Everyone, As far as I can tell, JPEGReadWriter in Pharo 7 doesn't read (or write) the image metadata, e.g. title, keywords, exposure time, etc. Is anyone aware of a package that does? Thanks! Alistair

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Re: [Pharo-users] Personal wiki / information manager
by Evan Donahue Sept. 25, 2023

Sept. 25, 2023

Seems that Pharo is a magnet for this kind of project. I've been writing one as well and using it to organize my research notes. Does anyone working on personal info mgmt tools want to talk offline? I expect we're running into some of the same issues, both conceptual and technical. Evan

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WebDav and CalDav in Pharo ?
by CÃ©drick BÃ©ler April 13, 2022

April 13, 2022

Hi all, I do some experiments with iCal. For now I serve a full calendar over HTTP. Not bad, but it is read only. Iâd like to try CalDAV. I was looking for it, and also webDAV. Gofer it smalltalkhubUser: 'UdoSchneider' project: 'FileSystemNetwork'; configuration; load. #ConfigurationOfFileSystemNetwork asClass project stableVersion load: 'Webdav' Iâve found the project of Udo, but it doesnât load on P8. I think this is due to the stream refactoring. Right now the image hung. Iâll try maybe to load it manually. But I was wondering oof there were other alternatives ? TIA, CÃ©drick

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Re: [Pharo-users] Embedding pharo in C++
by tesonep＠gmail.com April 21, 2020

April 21, 2020

Hi Roland, the function vm_main_with_parameters() starts the vm and it will not return until the image finishes. In my example, only when the SDL window is closed, the quit primitive is executed and the function ends. To do a nicer POC we need to make modifications in the image, so it handles keeping the image open. On Wed, Jan 22, 2020 at 7:08 PM Roland PlÃ¼ss via Pharo-users <pharo-users(a)lists.pharo.org> wrote: > > I gave the C-Example repository a try but I don't fully understand how > it works. Does the vm_main_with_parameters() block until the VM is quit > or some function it runs? From looking at the source code I'm not sure > what it does. > > On 1/22/20 12:17 PM, Pierce Ng wrote: > > On Wed, Jan 22, 2020 at 11:04:07AM +0100, tesonep(a)gmail.com wrote: > >> nice to hear about the Pascal experiment, > > I've published my code on GH and sent an announcement to pharo-dev. > > > > Repo is https://github.com/PierceNg/pharo-vm-embedded-pascal > > > > Pierce > > > > > > -- > Yours sincerely > PlÃ¼ss Roland > > Leader and Head Programmer > - Game: Epsylon ( http://www.indiedb.com/games/epsylon ) > - Game Engine: Drag[en]gine ( http://www.indiedb.com/engines/dragengine > , http://dragengine.rptd.ch/wiki ) > - As well as various Blender export scripts und game tools > -- Pablo Tesone. tesonep(a)gmail.com

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Latest PharoJS Success Story
by N. Bouraqadi April 3, 2020

April 3, 2020

The latest PharoJS-powered smartphone app is now live. Development has been made using Pharo. Then, javascript code is generated using PharoJS. Last, the app is built to target both iOS and Android thanks to Apache Cordova. Learn more and Download at https://nootrix.com/projects/brain-treats-app/ Noury

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Re: [Pharo-users] Generate class hierarchy from JSON Schema
by eftomi March 12, 2020

March 12, 2020

Todd, this is great, I didn't know that you are working on ActiveRecord. BTW, I have some minor additions to SQLServerPlatform (support for National Language Character Set) and OraclePlatform (Decimal data type) - is there a central git repository for Glorp so that I could PR to? Thanks and best wishes, Tomaz -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

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Spec2 demos
by Steve Quezadas March 4, 2020

March 4, 2020

Hey guys, Forgive the naive question, but does anyone know how to open the demos in Spec2? The package "Spec2-Examples" has a few example objects that I would like to toy with: SpDemo SpDemoButtonsPresenter SpCheckBoxExample "SpDemo openInWorld" is not working.

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Re: [Pharo-users] can I write this without the three if then;s
by Dennis Schetinin Feb. 15, 2020

Feb. 15, 2020

It would be an overkill to do it for this particular case, but Smalltalk makes it possible to implement a case-like construction: [ expression ] when: [ :value | condition1 ] do: [-0do :value | ... ]; when: [ :value | condition2 ] do: [ :value | ... ]; otherwiseDo: [ :value | ... ]; evaluate I am sure, something like this has been implemented already somewhere (maybe in Squeak?). Still not sure it is practical as compared to simple if-s, and for sure not widely used :) ...On the other hand, sometimes the case-like construction can be considered a more intension-revealing style. Ð¿Ñ, 27 Ð´ÐµÐº. 2019 Ð³., 22:18 Roelof Wobben via Pharo-users < pharo-users(a)lists.pharo.org>: > Hello, > > Im trying to solve a challenge from exercism where I have to calculate > the points somehow gets on a very simple darts board. > > I solved it like this : > > > scoreX: anInteger y: anInteger2 > | distance | > distance := (anInteger squared + anInteger2 squared) sqrt. > distance > 10 > ifTrue: [ ^ 0 ]. > distance > 5 > ifTrue: [ ^ 1 ]. > distance > 1 > ifTrue: [ ^ 5 ]. > ^ 10 > > > but now I use three if then and I think it's ugly code. > > Is there a way I can make it more the smalltalk way ? > > > Regards, > > Roelof > >

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Pharo image processing library
by Pablo Navarro Feb. 6, 2020

Feb. 6, 2020

Hi everyone! Iâm searching for one library for image processing in Pharo. I couldn't find anything (only wrappers) so I tried programming one for basic operations (sum, subtraction) with images using class âFormâ. What do you think about this? For providing a context, I'm studying a PhD. in image processing, but all of the operations that I do, do it in Python. I try using Pharo for more fun :D. Best Regards Pablo.

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Re: [Pharo-users] Large Image Generator
by tesonep＠gmail.com Feb. 6, 2020

Feb. 6, 2020

Hi Benoit, the main idea as always is to have better tests. We have seen that Pharo, and many users reported, that Pharo does not behaves correctly in some cases when handling large images. When I take about large images, I am talking about images with a lot of code and/or with a lot of data (yes the code for us is data... but I am just differencing because if we are testing senders / implementors we don't care about having a 10GB ByteArray). Also we have seen that for correctly testing this scenarios, we need good images, because depending the characteristics of the image it stress different parts of the system. As you correctly said we need to improve the tools (Calypso, System Navigation, Spotter, Iceberg, etc) and the infrastructure (GC, Compiler, VM in general). So we need to generate a lot of different images with different characteristics. Also, as you correctly mentioned we need to generate images with static behavior and with dynamic behavior (e.g., lots of concurrent processes). The main goal of the project is to start a recollection of existing solutions and to add new ones to generate this synthetic images. We want also to generate images that reproduce the nature of images. For example, it is not enough to generate random method selectors if we are testing the indexing of them. A good index varies its performance depending of the nature of the text. We need to generate random methods following some rules a developer whould use, for example using more a given word or using real words. So basically, we started collecting the easy algorithms to generate and we will add more, and of course, it is open to contribution from anyone and to different usage scenarios. The two I have implemented are the ones we are using this week to solve three issues: (1) improving the startup time, (2) improving the detection of deprecated methods, (3) improving the analysis of big literal methods. I have finished 1, the other two we are in working. Also, I will like to add an implementation of the work of Clement and Sophie to generate images to stress the GC. If you have ideas or things to add let's share them!! Cheers, Pablo On Wed, Jan 29, 2020 at 6:48 PM Benoit St-Jean via Pharo-users <pharo-users(a)lists.pharo.org> wrote: > > Just read that announcement > (https://pharoweekly.wordpress.com/2020/01/29/ann-large-image-generator/) > on Pharo Weekly. > > Anyone knows more about the precise goal of that project? What is the > exact purpose of those images and what are we trying to test? Garbage > collection? The VM behavior under stress? Limitations of Pharo on a > specific OS? A reference against which future versions will be > benchmarked for performance? Iceberg and code management performance? > How base classes react when they have to deal with millions of objects > (e.g. a Bag with 15 million objects, forking 15000 processes, creating > 20000 semaphores, etc) ? > > -- > ----------------- > BenoÃ®t St-Jean > Yahoo! Messenger: bstjean > Twitter: @BenLeChialeux > Pinterest: benoitstjean > Instagram: Chef_Benito > IRC: lamneth > GitHub: bstjean > Blogue: endormitoire.wordpress.com > "A standpoint is an intellectual horizon of radius zero". (A. Einstein) > > -- Pablo Tesone. tesonep(a)gmail.com

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