Beginners April 2007

beginners@lists.squeakfoundation.org

43 participants
56 discussions

Re: Squeak Firefox plugin on Linux
by Andrew Dabrowski 15 Apr '07

15 Apr '07

I already had squeakvm installed. In fact I had already tried different versions of the squeak browser plugin, including the earlier squeakland_3.8-3u_all.deb and the squeak-plugin deb files from ftp.squeak.org, and I had never encountered this error before. By the way, I have tested the ftp.squeak.org version with two different browsers, and it works with Mozilla but does not work with Firefox. Any idea why that should be the case? > > You have to install the squeak-vm package before > > there should be the /usr/lib/squeak/npsqueakregister, which tries to > register > the plugin in various places. > > - Jens - > > Andrew Dabrowski schrieb: >> I tried installing your deb file but got the following error. Do I >> have to do something with the changes file before installing the deb? >> >> >> Selecting previously deselected package squeakland. >> (Reading database ... 238563 files and directories currently installed.) >> Unpacking squeakland (from .../deb/squeakland_3.8-4u_all.deb) ... >> Setting up squeakland (3.8-4u) ... >> /var/lib/dpkg/info/squeakland.postinst: 33: >> /usr/lib/squeak/npsqueakregister: not found >> dpkg: error processing squeakland (--install): >> subprocess post-installation script returned error exit status 127 >> >> >> >>> Hi, >>> >>> there was a bug in the npsqueak, try using the packages from: >>> >>> http://www.impara.de/~jens/ubuntu/ >>> >>> - Jens - >>> >>> Andrew Dabrowski schrieb: >>>> I have Ubuntu Linux and the Squeak plugin for Firefox isn't working. >>>> For example, when I go to the Etoys page at Squeakland Im told I >>>> need to download a plugin, even if I've already installed it. Does >>>> anyone know if this is the fault of Squeak, Ubuntu, Firefox, or me? >>>> ------------------------------------------------------------------------ >>>>

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connecting to file server in squeak
by Navodit Kaushik 15 Apr '07

15 Apr '07

Hi I have set up a file server using Komanche and want to connect to this server so that I can create/read/edit files on the server. Can someone advise how to go about this? I tried using ServerDirectory but am not sure how to work without any user names/passwords? Right now when I send the message "openFTPClient" it gives an error due to blank password. Any hints would be welcome. Thanks --------------------------------- Ahhh...imagining that irresistible "new car" smell? Check outnew cars at Yahoo! Autos.

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squeak plugin: Mac, limited user
by Andrew Dabrowski 14 Apr '07

14 Apr '07

Now I'm trying to install the squeak plugin on my stepson's Mac (os 10.3), with the additional problem that he has a limited account (I choose the programs he can run in the Accounts Preferences pane). I've installed the plugin on my admin account and it works fine on Safari. But when I try it on his account I keep getting "plugin needed" messages. I've tried copying the InternetPlugins folder from my account to his and changing the ownership, but no luck yet. Any of you know what the problem could be?

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Advice on tracing program logic
by andy.burnett＠knowinnovation.com 14 Apr '07

14 Apr '07

Hello I need a little help working out how to 'trace' a Squeak program. This is the problem which started me off. I wanted to insatiate a FileList - just to play around with it. I knew I could create one by using the icon in the tools flap, but I couldn't work out how to create a new instance which was visible. I tried: tmp1 := FileList open. tmp1 makeMeVisible which gave me a debug window. What I need to understand at the moment is how can I see the code which is being called when I click on the File List icon in the tools flap, because that is obviously creating an instance in the right way. I did try inspecting the icon but that didn't really give me any clues. What I am hoping is that if I can understand how an experienced squeaker would deal with this very simple case, it will help me understand how to learn squeak more generally Thanks AB

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Re: Squeak Firefox plugin on Linux
by Andrew Dabrowski 14 Apr '07

14 Apr '07

OK, I've got it working. I downgraded from the ftp.squeak.org version 3.9.7, and moved the npsqueak.so into the firefox plugins folder. Thanks for your help. > > Andrew Dabrowski schrieb: >> So which deb package has the right npsqueak.so for firefox? When I >> tried the file >> http://www.impara.de/~jens/ubuntu/squeakland_3.8-4u_all.deb >> I got errors both installing and uninstalling (it said >> npssqueakregister was missing in both cases, I had to create a dummy >> file it could delete in order to uninstall it). Maybe I can just get >> the file I need from >> http://www.impara.de/~jens/ubuntu/squeakland_3.8-4u.tar.gz? >> > > neither has it, in the squeakland image is only the platform independent > image. > > the plugin is in the squeak-vm package > > http://www.impara.de/~jens/ubuntu/squeak-vm_3.7.7-6_i386.deb > > it is the normal ubuntu package from the multiverse + the patch which > fixes the plugin bug. > > - Jens - >

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reading and writing files on remote ServerDirectory
by Navodit Kaushik 14 Apr '07

14 Apr '07

Hi I have set up a webserver on a machine using Komanche with the following code: | ma | ma := ModuleAssembly core. ma serverRoot: FileDirectory default fullName. ma documentRoot: FileDirectory default fullName. ma directoryIndex: 'index.html index.htm'. ma serveFiles. (HttpService startOn: 8080 named: 'httpd') plug: ma rootModule So now if I goto the link: http://xxx.xxx.xxx.xxx:8080 from another machine (xxx.xxx.xxx.xxx is the IP address of the server machine ) I can see the files inside the default directory on the server machine. Now suppose there is a directory called 'test' on this server and I want to create/read/write files in this directory. How should I go about this? I tried the following but this does not work ! serverD := ServerDirectory new. serverD server:'xxx.xxx.xxx.xxx:8080'. serverD getFileList I think the error is in my connecting to the server directory. Is this because I created a FileDirectory and not a ServerDirectory while setting up the webserver in the code above? Also I am not sure how to connect to the server directory. Can someone point me to any examples of how to do this or point out the error? Thanks --------------------------------- Need Mail bonding? Go to the Yahoo! Mail Q&A for great tips from Yahoo! Answers users.

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Re: Squeak Firefox plugin on Linux
by Andrew Dabrowski 14 Apr '07

14 Apr '07

So which deb package has the right npsqueak.so for firefox? When I tried the file http://www.impara.de/~jens/ubuntu/squeakland_3.8-4u_all.deb I got errors both installing and uninstalling (it said npssqueakregister was missing in both cases, I had to create a dummy file it could delete in order to uninstall it). Maybe I can just get the file I need from http://www.impara.de/~jens/ubuntu/squeakland_3.8-4u.tar.gz? > > Err, I was just trying to explain why it worked in Mozilla and > Firefox before, and now stopped working in Firefox but still works in > Mozilla. If you do not know what linking libraries like libXt means, > ignore that part. > > Replacing the old npsqueak.so with the new one should be all that is > required to make it work in Firefox again. > > - Bert - > > On Apr 13, 2007, at 0:58 , Andrew Dabrowski wrote: > >> You've lost me. The installer did put npsqueak.so into the >> plugins directory, but eToys still aren't working in Firefox. >> >> What is libXt? >> >>> That's exactly the problem - until very recently, both Mozilla >>> and Firefox linked to libXt by default. Now Firefox does not >>> anymore. So our new version links libXt directly into the squeak >>> plugin. It should be sufficient to install the new plugin, and >>> manually run npsqueakregister. Or even manually create the >>> symlinks from npsqueak.so into your browser's plugins directory >>> (that's all npsqueakregister does). >>> >>> - Bert - > > > > >

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Adding methods to Integers...
by Patrick Stein 13 Apr '07

13 Apr '07

Background: :::::::::::::::::::::: The most recent MathFactor Podcast ( http://mathfactor.uark.edu/ ) ended with a request to write a computer program that could, in principal, given enough time and memory, compute Graham's Number ( http://mathworld.wolfram.com/GrahamsNumber.html ). Smalltalk was a natural choice since it already supports LargeIntegers. Problem: ::::::::::::::: Being new to Smalltalk, my first thought was that I should make my own class as a subclass of LargePositiveInteger, put my methods there, and violá. Alas, no love. I ran into the following problems: * I couldn't find a way to give a value to myself. * I couldn't find a way to get integers to adapt to my class anyway. I ended up just adding my methods to the Integer class. But, this felt very naughty. Is it the usual approach? Thanks, Patrick Bonus Questions: ::::::::::::::::::::::::::::: [ Actually, this section should be titled, "Bonus Questions: which it turns out that I managed to answer for myself, but have left here for pedagogic reasons". ] What I really want at the moment is to know if adding methods to the Kernel classes is considered legit. But, I ran into a whole set of other questions along the way. So, I wouldn't mind a little guidance on these either. The new: method: :::::::::::::::::::::::::::::: The withAtLeastNDigits method of LargePositiveInteger does this (variable names changed for clarity): nn := self class new: nDigits. I cannot find the "new:" method in the class browser under Class, nor can I find any hint of it somehow being part of LargePositiveInteger, Integer, Number, Magnitude, Object, or ProtoObject. Actually, I just answered this one myself.... the Class class's hierarchy is Class < ClassDescription < Behavior < Object. The "new:" is in Behavior. Initialization methods?: ::::::::::::::::::::::::::::::::::::::: The only way that I can understand the "i" and "hours" methods of the Number class are if I somehow think the Complex and Duration classes have class methods in addition to their instance methods. For example, here is the "i" method of the Number class. i ^ Complex real: 0 imaginary: self That seems straightforward enough. Given a number, say "5" and pass it the "i" message. It will return a complex number with 0 for the real and 5 for the imaginary. Except, I can't where the "real: imaginary:" method is defined with the class browser. Blah, and I just answered this one, too. I hadn't twigged on the "class" button at the bottom of the class-list in the browser. Now, I see.

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Re: Squeak Firefox plugin on Linux
by Andrew Dabrowski 13 Apr '07

13 Apr '07

You've lost me. The installer did put npsqueak.so into the plugins directory, but eToys still aren't working in Firefox. What is libXt? > That's exactly the problem - until very recently, both Mozilla and > Firefox linked to libXt by default. Now Firefox does not anymore. So > our new version links libXt directly into the squeak plugin. It > should be sufficient to install the new plugin, and manually run > npsqueakregister. Or even manually create the symlinks from > npsqueak.so into your browser's plugins directory (that's all > npsqueakregister does). > > - Bert -

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Error: No content to install
by Isaac Gouy 12 Apr '07

12 Apr '07

I downloaded the Linux VM and image from these links: http://ftp.squeak.org/3.9/unix-linux/Squeak-3.9-8.i686-pc-linux-gnu.tar.gz http://ftp.squeak.org/3.9/Squeak3.9-final-7067.zip I can invoke the image without problem. When I try to pass a script file on the command line there's a "Error: No content to install". The script file 'file:test.sq' is set in the url field of HTTPDownloadRequest Error: No content to install 11 April 2007 10:32:49 am VM: unix - a SmalltalkImage Image: Squeak3.9 [latest update: #7068] SecurityManager state: Restricted: false FileAccess: true SocketAccess: true Working Dir /opt/Squeak-3.9-8 Trusted Dir /opt/Squeak-3.9-8/secure Untrusted Dir /opt/Squeak-3.9-8/My Squeak CodeLoader(Object)>>error: Receiver: a CodeLoader Arguments and temporary variables: aString: 'No content to install' Receiver's instance variables: baseURL: '' sourceFiles: an Array(a HTTPDownloadRequest) segments: nil publicKey: nil CodeLoader>>installSourceFile: Receiver: a CodeLoader Arguments and temporary variables: aStream: nil contents: nil trusted: nil Receiver's instance variables: baseURL: '' sourceFiles: an Array(a HTTPDownloadRequest) segments: nil publicKey: nil ____________________________________________________________________________________ Finding fabulous fares is fun. Let Yahoo! FareChase search your favorite travel sites to find flight and hotel bargains. http://farechase.yahoo.com/promo-generic-14795097

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Beginners April 2007