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

Zinc WebSocket usage
by Erik Stel June 2, 2020

June 2, 2020

Sven or anyone else with experience with ZnWebSockets, a question regarding ZnWebSocket usage. I have the following code which sort of resembles my current usage of ZnWebSockets. ZnWebSockets are used for both sending and receiving messages in a random fashion (ie, no request-response like pattern). Because the ZnWebSocket operates synchronous I fork 'handlers' which process the incoming messages. When executing the code below, the client closes the connection but will 'recognise' this itself only after a timeout (around 30 seconds by default). Is there a better way to use ZnWebSockets which does not incur this delay? My current workaround (see comment at the bottom in code below) is to send an explicit "close" ZnWebSocketFrame instead of sending #close to the ZnWebSocket. This will have the client close 'directly', after which I can close the ZnWebSocket stream explicitly. The implementation of #close for ZnWebSocket is to perform both: send close frame and close stream. The later seems to 'stall' the receive message until timing out. The synchronous handling of incoming messages might be causing this. But could not directly find why closing the stream resulted in different behaviour than when only sending the close frame. (Hope this explanation is helpful ;-). -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

2 4

Pharo 9 64 + windows 10
by Vitor Medina Cruz June 2, 2020

June 2, 2020

Hello, I tried to download Pharo 9 64bits and load latest repository on it. After loading, Iceberg says I have changes made to pharo (???) [image: image.png] But I changed nothing, I just loaded the pharo 9latest code on it using iceberg. I already tried to recalculate dirty packages. What is happening? How do I revert changes so that my image is the same as the repo? Regards, Vitor.

2 2

[ANN] JRMPC 2020 Awards Ceremony
by Richard Kenneth Eng May 31, 2020

May 31, 2020

Here it is, finally! https://smalltalk.tech.blog/2020/05/30/jrmpc-2020-awards-ceremony/ It's a nice coincidink that the launch of the awards ceremony occurred on the same day as the historic SpaceX Crew Dragon launch. https://www.space.com/elon-musk-emotional-spacex-astronaut-launch.html I share Elon Musk's elation. Anyway, I am so relieved it's over. I have never worked so hard on anything in my entire life! This marks the official end of my Smalltalk campaign. Later in the year, I may publish an online Pharo tutorial video series, and next year, I shall see if my Camp Smalltalk Supreme idea to celebrate Smalltalk's 50th birthday has any legs, but beyond that, I am done with Smalltalk. Long Live Smalltalk!

1 0

Getting Pharo running on AWS
by Mark Guzdial May 29, 2020

May 29, 2020

Hi everyone, New here, encouraged (from Discord) to try my questions here. Iâm struggling to get AWS to run in an Ubuntu AWS instance. I tried following the directions here: https://ci.inria.fr/pharo-contribution/job/EnterprisePharoBook/lastSuccessf… <https://ci.inria.fr/pharo-contribution/job/EnterprisePharoBook/lastSuccessf…> but I was getting some error about threads and configurations that I simply didnât understand. Then I tried using Pharo-snap: https://github.com/akgrant43/pharo-snap <https://github.com/akgrant43/pharo-snap> Pharo-snap made some of the config problems go away, but when I try starting Pharo on AWS, I get: ubuntu@ip-172-31-16-17:~$ ./pharo Pharo-sea-roa-sound.image Usage: [<subcommand>] [--help] [--copyright] [--version] [--list] [ --no-quit ] --help print this help message --copyright print the copyrights --version print the version for the image and the vm --list list a description of all active command line handlers --no-quit keep the image running without activating any other command line handler --deploymentPassword if a password needs to be used by the user to launch the command --readWriteAccessMode, --readOnlyAccessMode, --writeOnlyAccessMode, --disabledAccessMode specify disk access mode, read-write mode as default <subcommand> a valid subcommand in --list Preference File Modification: --preferences-file load the preferences from the given <FILE> --no-default-preferences do not load any preferences from the default locations Documentation: A PharoCommandLineHandler handles default command line arguments and options. The PharoCommandLineHandler is activated before all other handlers. It first checks if another handler is available. If so it will activate the found handler. Clearly, Iâm doing something wrong, but donât know what the next step is, since there isnât an explicit error message. Can someone point a newbie towards the appropriate next steps? Thanks! - Mark

4 13

browsing references to elements of Undeclared?
by Craig Latta May 28, 2020

May 28, 2020

Hi all-- In various Smalltalks, I'm used to being able to open an inspector on the Undeclared dictionary, then selecting an element and browsing references to it. I don't seem to see that functionality in Pharo 8. Is there an equivalent? thanks! Craig -- Craig Latta Black Page Digital Amsterdam :: San Francisco craig(a)blackpagedigital.com +31 6 2757 7177 + 1 415 287 3547

2 1

Spec2 Pharo8/9; icons
by TomaÅ¾ Turk May 28, 2020

May 28, 2020

Dear all, What would be the best Pharo version to start building a Spec2 GUI for an app - Pharo 9 which is under development but with novelties in Spec2, or Pharo 8? What's the best (easiest ...) way to import new icons into Smalltalk ui icons? Is there any special bitmap format to be considered? Thanks and best wishes, Tomaz

3 7

SIXX tab consideration
by Dario Romano Trussardi May 28, 2020

May 28, 2020

Ciao, I use sixx environment to export - import data from Pharo - Gemstone. I think it would be interesting in the creation of sixx file, to make optional the tab indentation. On my database, the file size difference is substantial: from 3MB to 2MB. Thanks for any consideration. Dario

2 1

Find/Replace class scoped
by Vitor Medina Cruz May 27, 2020

May 27, 2020

Hello, Is there a way to make find replace in a class scoped way? I can do that with finder, but I figured only with package scoping. I wanna to change the name of a variable in multiple methods, and also I would like to regex replace an expression also in multiple methods. Regards, Vitor

4 8

Name of coding pattern
by Kasper Osterbye May 27, 2020

May 27, 2020

Hi. I was looking at the zink stream, and noticed this pattern with strm tag: 'h1' do: aBlockWhichWriteTheTitle It is also used in baselines, and I have used it myself a few times. Is anyone aware of this having a name? Best, Kasper

2 1

Repost from twitter : running 1983 Smalltalk. Today
by Davide Grandi May 26, 2020

May 26, 2020

From Torsten Bergman - @TorstenAstares https://twitter.com/TorstenAstares/status/1264820045840027649 "Dan Banay just released a few days ago, on the day of the 80th anniversary of Alan Kay, a fully functional Smalltalk-80 VM capable of running the original ST-80 images as distributed by Xerox Parc in 1979 and 1980" https://github.com/dbanay/Smalltalk very very intriguing. -- Ing. Davide Grandi linkedin : http://linkedin.com/in/davidegrandi

1 0