February 2022 - Pharo-users

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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ESUG 2022 call for presentations & Call for student volunteers
by stephane ducasse April 23, 2022

April 23, 2022

ESUG 2022 Novisad Serbia 22. â 26.8. https://esug.github.io/2022-Conference/call2022.html You can support the ESUG conference in many different ways: Sponsor the conference. New sponsoring packages are described at http://www.esug.org/supportesug/becomeasponsor/ <http://www.esug.org/supportesug/becomeasponsor/> Submit a talk, a software or a paper to one of the events. See below. Attend the conference. We'd like to beat the previous record of attendance (170 people at Amsterdam 2008)! Students can get free registration and hosting if they enroll into the the Student Volunteers program. See below. <>Developers Forum: International Smalltalk Developers Conference We are looking for YOUR experience on using Smalltalk. You will have 30 min for presentations and 45 min for hands-on tutorials. The list of topics for the normal talks and tutorials includes, but is not limited to the following: XP practices, Development tools, Experience reports Model driven development, Web development, Team management Meta-Modeling, Security, New libraries & frameworks Educational material, Embedded systems and robotics SOA and Web services, Interaction with other programming languages <>Teaching Pearls and Show us Your Business New this year!!! We added two types of sessions in addition to the regular talks and show us your projects sessions. Show your business 10 min session (Get prepared!!) Teaching pearls : we want some session on how to teach some design aspects. We want your tip and tricks to teach Smalltalk or OOP. We expect to have several 10 to 15 min sessions aggregated. <>How to submit? Make a Pull Request here https://github.com/ESUG/esug.github.io/tree/source/2022-Conference/talks Or but only if you are not connected to the worldâ¦ send an email to stephane.ducasse(a)inria.fr Title: [ESUG 2022] Please follow the template below the email will be automatically processed! Name: Email: Abstract: Bio: Call for Student Volunteers Student volunteers help keep the conference running smoothly; in return, they have free accommodations, while still having most of the time to enjoy the conference. Pay attention: the places are limited so do not wait till the last minute to apply. Conference details: Send an email to stephane.ducasse at inria.fr and serge.stinckwich at gmail.com with: title: [ESUG 2022 Student] name, gender, university/school, country, email address short description of you and why you are interested in participating For which period is accommodation covered? Accommodation is covered from Sunday 21 August until Friday 26 August 2022 (including nights from Sunday to Monday and from Thursday to Friday). Students will be hosted in student rooms. ESUG additionally covers for the lunches during the week and one dinner. Duties include handling registration as people arrive at the conference, filling coffee machines, collecting presentation slides for ESUG right after the presentation is given, being present at an information desk to answer questions, and generally being helpful. Student volunteering makes the conference better, takes a fairly small amount of time and doesn't significantly interfere with enjoying and learning from the conference. Please Note, this role requires discipline and constant attention to all attendees. Information about hotel Student Volunteer rooms are booked at (to be announced). If you are student volunteer, do not book yourself, we have arranged the booking already!

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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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Too many parenthesis - a matter of syntax
by Kasper Osterbye March 1, 2022

March 1, 2022

Cheers all I have noticed that I often ends up with quite a number of nested expressions, for example: (((json at: 'tree') select: [ :e | (e at: 'type') = âblob' ]) collect: [:e | Path from: (e at: 'path')]) select: [ :p | p segments last in: [ :name | (name endsWith: '.md') | (name endsWith: '.mic') ] ] What kind of proposals (if any) have been for a different syntax which could give a more streamlined syntax? My own thinking has been around an alternative to the cascade semicolon. What symbol to use does not matter for me, but something like json at: âtree' Âº select: [ :e | ((e at: 'type') = 'blobâ)]Âº collect: [:e | Path from: (e at: 'pathâ)]Âº select: [ :p | p segments last in: [ :name | (name endsWith: '.md') | (name endsWith: '.mic') ] ] Basically, a send the right hand expression to the result of the left hand expression. Has anyone ever tried this, or is it just one of the many small annoyances best left alone? Best, Kasper

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Image
by kikka Feb. 24, 2022

Feb. 24, 2022

Hi everybody, I have a big problem. After working on my application I closed Pharo. When I got back the shortcut wasn't working any more and I realized my image got ruined. I could recover just a very old version of my C:\Seaside-3.1-portable\Seaside-3.1-portable.app\Contents\Resources\Pharo4.0 -portable.image (no recent backup). I have seen that all the changes I have developed can be seen in C:\Seaside-3.1-portable\Seaside-3.1-portable.app\Contents\Resources\Pharo4.0 -portable.changes I was wondering if it was possible to load all the changes on the old Pharo4.0-portable.image without losing all my work. Hanks in advance for any help. Regards. Federica -- Questa e-mail Ã¨ stata controllata per individuare virus con Avast antivirus. https://www.avast.com/antivirus

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Changes to class not recorded in change.log?
by Stewart MacLean Feb. 21, 2022

Feb. 21, 2022

Hi, The worst case scenario has just happened - my image is hosed. I've managed to recover a previous set of change/image files (thanks CrashPlan!). Then I've replayed all the intervening changes - however I find that some instance variables that I had defined haven't been reflected in class shape changes. I notice all the changes for the complete change log are for Method, and Do It (image saves) Surely class shape changes should be recorded as well? Is this a bug? Cheers, Stewart Platform Mac Mini Pharo 9.0.0 Build information: Pharo-9.0.0+build.1573.sha.0e09d756fc99383cbb498565200d9e5e9841ce11 (64 Bit)

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Fwd: ESUG 2022 call for presentations And Call for student volunteers
by stephane ducasse Feb. 20, 2022

Feb. 20, 2022

A reminderâ¦ S > Begin forwarded message: > > From: "stephane.ducasse(a)free.fr" <stephane.ducasse(a)free.fr> > Subject: ESUG 2022 call for presentations And Call for student volunteers > Date: 13 January 2022 at 13:23:44 CET > > ESUG 2022 > Serbia 22. â 26.8. > > You can support the ESUG conference in many different ways: > Sponsor the conference. New sponsoring packages are described at http://www.esug.org/supportesug/becomeasponsor/ <http://www.esug.org/supportesug/becomeasponsor/> > Submit a talk, a software or a paper to one of the events. See below. > Attend the conference. We'd like to beat the previous record of attendance (170 people at Amsterdam 2008)! > Students can get free registration and hosting if they enroll into the the Student Volunteers program. See below. > <>Developers Forum: International Smalltalk Developers Conference > > We are looking for YOUR experience on using Smalltalk. You will have 30 min for presentations and 45 min for hands-on tutorials. > The list of topics for the normal talks and tutorials includes, but is not limited to the following: > XP practices, Development tools, Experience reports > Model driven development, Web development, Team management > Meta-Modeling, Security, New libraries & frameworks > Educational material, Embedded systems and robotics > SOA and Web services, Interaction with other programming languages > <>Teaching Pearls and Show us Your Business > > New this year!!! We added two types of sessions in addition to the regular talks and show us your projects sessions. > Show your business 10 min session (Get prepared!!) > Teaching pearls : we want some session on how to teach some design aspects. We want your tip and tricks to teach Smalltalk or OOP. > We expect to have several 10 to 15 min sessions aggregated. > <>How to submit? > > Make a Pull Request here https://github.com/ESUG/esug.github.io/tree/source/2022-Conference/talks > > Or but only if you are not connected to the worldâ¦ send an email to stephane.ducasse(a)inria.fr > > Title: [ESUG 2022] Please follow the template below the email will be automatically processed! > Name: > Email: > Abstract: > Bio: > > Call for Student Volunteers > Student volunteers help keep the conference running smoothly; in return, they have free accommodations, while still having most of the time to enjoy the conference. > > Pay attention: the places are limited so do not wait till the last minute to apply. > > Conference details: > Send an email to stephane.ducasse at inria.fr and serge.stinckwich at gmail.com with: > > title: [ESUG 2022 Student] > name, gender, university/school, country, email address > short description of you and why you are interested in participating > For which period is accommodation covered? Accommodation is covered from Sunday 21 August until Friday 26 August 2022 (including nights from Sunday to Monday and from Thursday to Friday). Students will be hosted in student rooms. ESUG additionally covers for the lunches during the week and one dinner. > > Duties include handling registration as people arrive at the conference, filling coffee machines, collecting presentation slides for ESUG right after the presentation is given, being present at an information desk to answer questions, and generally being helpful. Student volunteering makes the conference better, takes a fairly small amount of time and doesn't significantly interfere with enjoying and learning from the conference. Please Note, this role requires discipline and constant attention to all attendees. > > Information about hotel > Student Volunteer rooms are booked at (to be announced). If you are student volunteer, do not book yourself, we have arranged the booking already! >

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[ANN] Pharo LZ4 Tools
by Sven Van Caekenberghe Feb. 20, 2022

Feb. 20, 2022

Hi, Pharo LZ4 Tools (https://github.com/svenvc/pharo-lz4-tools) is an implementation of LZ4 compression and decompression in pure Pharo. LZ4 is a lossless compression algorithm that is focused on speed. It belongs to the LZ77 family of byte-oriented compression schemes. - https://en.wikipedia.org/wiki/LZ4_(compression_algorithm) - https://lz4.github.io/lz4/ - https://github.com/lz4/lz4 Both the frame format (https://github.com/lz4/lz4/blob/dev/doc/lz4_Frame_format.md) as well as the block format (https://github.com/lz4/lz4/blob/dev/doc/lz4_Block_format.md) are implemented. Dictionary based compression/decompression is available too. The XXHash32 algorithm is also implemented. Of course this implementation is not as fast as highly optimised native implementations, but it works quite well and is readable/understandable, if you like this kind of stuff. It can be useful to interact with other systems using LZ4. Sven

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UK Smalltalk User Group meeting - 23 February 2022
by Giovanni Corriga Feb. 19, 2022

Feb. 19, 2022

For this month's UKSTUG meeting, we'll open the floor to the whole audience and let people show what they are working on. If you have an interesting project to show, or if you'd like to get some help with some hard problem, just show up and be ready to present! This will be an online meeting from home. If you'd like to join us, please sign up in advance on the meeting's Meetup page ( https://www.meetup.com/UKSTUG/events/284113812/ ) to receive the meeting details. Donât forget to bring your laptop and drinks!

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