Beginners October 2008

beginners@lists.squeakfoundation.org

62 participants
79 discussions

Can I use Squeak3.10.2-7179-basic with Squeak-3.8-9 binary?
by Charles Bacon 05 Oct '08

05 Oct '08

3.8-9 is the only binary available for FreeBSD, and I could find no sources from which to build a new binary, nor for an AMD64 FreeBSD. Any hope? I find no non-binary files for 3.8-9. Chuck Bacon -- crtb%cape.com ABHOR SECRECY -- DEFEND PRIVACY

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code formatter
by Mark Volkmann 04 Oct '08

04 Oct '08

Can the code formatter be easily customized? I really don't like what it does to cascaded and keyword messages. It takes this: wax start: 'root'; attr: 'a1' value: 'v1'; close. and turns it into this: wax start: 'root'; attr: 'a1 value: 'v1'; close. If it can't leave the code the way I had it, I wish it would at least only do this: wax start: 'root'; attr: 'a1 value: 'v1'; close. BTW, I didn't ask it to run. It ran automatically when I did an instance variable rename refactoring. --- Mark Volkmann

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appending Strings
by Mark Volkmann 04 Oct '08

04 Oct '08

Is there a reason to prefer one of these approaches over the other? Maybe one is more efficient and should be preferred if doing a large number of appends. Approach #1 s := ''. s := s, 'foo'. s := s, 'bar' Approach #2 stream := WriteStream on: ''. stream nextPutAll: 'foo'. stream nextPutAll: 'bar'. s := stream contents Are there other approaches I should consider? --- Mark Volkmann

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break out of do
by Mark Volkmann 04 Oct '08

04 Oct '08

Is there a way to break out of a do:? For example, if I use do: to iterate through the characters in a string and I find a character I don't want to allow, can I break out and avoid examining the remaining characters? --- Mark Volkmann

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writing to a stream after close
by Mark Volkmann 03 Oct '08

03 Oct '08

Why is it that when I do a "print it" on all the code below, it outputs 'foobar'? Shouldn't the writing of 'bar' fail because I've closed the stream? ws := WriteStream on: ''. ws nextPutAll: 'foo'. ws close. ws nextPutAll: 'bar'. ws contents --- Mark Volkmann

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Re: Failing to install IRCe
by Andy Burnett 03 Oct '08

03 Oct '08

<< Frank said... I couldn't get Squeakmap to load IRCe, no errors just no action, but when I downloaded the mcz file (Network-IRC-fc.10.7.6.mcz) and used filelist to load it it came up fine. I was able to get onto the IRC channel with no problem. What is the 'package browser' you used to try and load IRCe? When do you get the walkback, during loading or when u go to use it? IRCe should run fine without the FFI package it only needs that for live links. >> Thanks Frank, I tried loading the Network-IRC - as you suggested - but, unfortunately, I received exactly the same error message. I have sent the debug file to Edgar to see if he can work out what is happening. Cheers AB

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Does seaside have any built in methods to tell components about their models?
by Andy Burnett 03 Oct '08

03 Oct '08

I am trying to build a simple, threaded, discussion system.

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Morphic "Tabs"
by Rob Rothwell 03 Oct '08

03 Oct '08

How hard would it be to add "tabs" to a Workspace, Browser, etc...? I know NOTHING about Morphic...I have been doing data processing with "just numbers," and any user interfaces I have written have been with Aida. However...sometimes it would just be nice to open another tab instead of another browser! Just wondering what would be involved and if I'd be up to it... Take care, Rob

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Re: Failing to install IRCe
by Andy Burnett 03 Oct '08

03 Oct '08

>> I thought I would try using the IRC channel, so I used the package >> browser to install the package. Unfortunately, I get a walk back >> window in which the system is complaining about "unable to find >> function address" and gives error code 13. >> >> I am running OSX 10.5.4 >> Firefox 3.0.3 >> Squeak 3.8.18beta3U >> Image: squeak3.10.2-7179-basic.image. >> >> The failed external call seems to be: "which firefox" >> >> Does anyone have any thoughts on how to fix this? >> >> Cheers >> AB <<Same recipe , for n time now... Go to http://www.squeaksource.com/Ladrillos.html and download FFI- Kernel-ar.7.mcz Then go to SqueakMap and download and install IRCe Edgar>> Thanks Edgar Unfortunately, I am still getting exactly the same error message. Does one have to 'reboot' the squeak image after installing the FFI-Kernel? Also, out of curiosity, why isn't this FFI package included in the standard image? I am sure there is a good reason, I just wondered what it is. Cheers AB

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'locking' an object
by Sean Allen 02 Oct '08

02 Oct '08

If you wanted to take a mutable object and make it immutable and be able to go back again to mutable, how could you do that? In particular the part that has me as a smalltalk beginner stumped is how to disallow any messages that would result in a state change while still allowing messages that only read state. Do you have to handle on a message by message basis? ( Eeek lots and lots of work ) Or is there something you could work into a superclass and use in its descendents? ( ideal for what I need. )

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Beginners October 2008