Squeak-dev July 1998

squeak-dev@lists.squeakfoundation.org

80 participants
111 discussions

Squeak 2.1 on Windows95: Serial port fails to open
by Dino Rosati 25 Jul '98

25 Jul '98

Hello, I've tried to open the serial port on my WinTel box running Win95/Squeak2.1 and get an error due to the primitive method "primClosePort:" failing. Here is the code I used to try to open comm port 2 on my machine: | com2 | com2 _ SerialPort new. com2 openPort: 2. Does anyone know what I'm doing wrong? Thanks in advance. ____ Dino Rosati <dino(a)trends.ca>

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Re: Squeak Exception Handling?
by David Farber 25 Jul '98

25 Jul '98

>>I'd like to implement the proposed Smalltalk ANSI standard exception >>protocols in Squeak. Is there an exception handling implementation for >>Squeak relatively complete? Enough so that the ANSI standard exception >>protocols could implemented using it. I used Hal Hildebrand's >>implementation when doing this for Smalltalk Express. > >In March, Dave Farber posted a Squeak version of exception handling. >(Dave: yes, it's very useful ;) Is there a more recent version?) thanks Bijan. there is not a more recent version. several reasons for this: 1) i have not received any bug reports :) 2) i got sidetracked from some stuff that had sidetracked me from some other stuff that had sidetracked me from working more on exceptions 3) i don't know that i really like PP's interface. at the very least i would what to swap do:handle: for handle:do:. i did find one bug. i had commented out one snippet of code that checked to see if the exception on the stack was the right type for the handler found. so now, the first handler found will always execute, regardless of the exception type. if any one has has any fixes, extensions, or more exception definitions, feel free to pass them along. dave -- j. david farber oo architect+mentor numenor labs incorporated in sunny boulder colorado dfarber(a)numenor.com www.numenor.com

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Re: SimpleClientSocket>>getMultilineResponseShowing:
by Maloney 24 Jul '98

24 Jul '98

>Since it seems that data may arrive in arbitrary chunks, it seems that the >line SimpleClientSocket>>getMultilineResponseShowing: > > done _ self endsWithSinglePeriodLine: chunk]. > >is a bit more reliable if written: > > done _ self endsWithSinglePeriodLine: response contents]. > >I notice this particularly when sending a LIST command to a POP socket when >there are no messages. > >Cheers, >Bob Thanks for pointing this out. -- John

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Squeak versus ANSI Smalltalk
by Maloney 24 Jul '98

24 Jul '98

Re: >What are the Squeak implementation limits listed below with ??? and did I >list any incorrect values for those I filled in specified by the proposed >Smalltalk ANSI standard: I'm sure everyone knows this, but Squeak currently makes no claim of conforming to the ANSI Smalltalk standard. While I suspect that at least one branch of Squeak developement will move in that direction, currently any resemblence between Squeak and ANSI Smalltalk is a happy accident stemming from Squeak's lineage from the orginal Xerox Smalltalk-80 rather than due to consious effort. There are any number of areas, such as filestreams and exception handling, where Squeak if probably pretty far off the mark. What this means is that some work is needed to port Smalltalk code from some other Smalltalk into Squeak. In many cases, this work is fairly mechanical. I love to see someone start a Swiki page describing those areas which are NOT so mechanical, such as exception handling. Recall that the Squeak wiki is now at: http://minnow.cc.gatech.edu/squeak.1 Please send a note to the Squeak list with the URL if you start such a page. Thanks! -- John

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Closing a socket - Mac/2.1
by Bob Arning 24 Jul '98

24 Jul '98

It seems that whenever I close a socket, Socket>>waitForDisconnectionUntil: always times out, leaving the status as ThisEndClosed. It wasn't clear to me from the C code included in the image how this was happening, but there seemed to be some work in progress in this area. For now, I have commented out the #waitForDisconnectionUntil. Does this seem reasonable? Does anyone have a better idea? Cheers, Bob

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Re: Hierarchical Tree View?
by Bob Arning 24 Jul '98

24 Jul '98

On Fri, 24 Jul 1998 07:39:02 -0400 "Pennell" <pennell(a)tiac.net> = wrote:=20 >Has anybody written a pane or morph that displays hierarchies in an = expandable/collapsable tree view? (similar to the Windows tree control) David, I have implemented something along those lines. It is available in my = email clinet, the latest version of which can be found in=20 http://www.charm.net/~arning/ While it is not yet all that I hope it will be, it might be a useful = starting point. Cheers, Bob

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Re: Squeak 2.x under WinCE2.00
by Les Tyrrell 24 Jul '98

24 Jul '98

The links I found at http://www.sugarWeb.com/Miniatures/files/WinCE/WCEHoy.htm to sqCERun.zip and scCEDev.zip do not appear to work. I have a Cassiopeia with WinCE 1.0 that I'm going to try this with- I'll let you know if that works once I have it. les

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Hierarchical Tree View?
by Pennell 24 Jul '98

24 Jul '98

<html><!DOCTYPE HTML PUBLIC "-//W3C//DTD W3 HTML//EN"> <HTML> <HEAD> <META content=text/html;charset=iso-8859-1 http-equiv=Content-Type> <META content='"MSHTML 4.72.3007.2"' name=GENERATOR> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT color=#000000 size=2>Has anybody written a pane or morph that displays hierarchies in an expandable/collapsable tree view?  (similar to the Windows tree control)</FONT></DIV> <DIV><FONT color=#000000 size=2></FONT> </DIV> <DIV><FONT size=2>-david</FONT></DIV></BODY></HTML> </html>

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Re: Hierarchical Tree View?
by stp＠limbo.create.ucsb.edu 24 Jul '98

24 Jul '98

David wrote, > Has anybody written a pane or morph that displays hierarchies in an = > expandable/collapsable tree view? (similar to the Windows tree control) My display list framework (part of the STP12 collection, see ftp://ftp.create.ucsb.edu/pub/Smalltalk/Squeak/goodies/STP12/STP12/Graphics/) has hierarchy layout managers that can generate indented list ot tree-like display lists from arbitrary hierarchical structures. I'm in the process of moving it over to Morphic. stp _ Stephen Travis Pope _ Center for Research in Electronic Art Technology (CREATE) _ Dept. of Music, Univ. of California, Santa Barbara (UCSB) _ stp(a)create.ucsb.edu, http://www.create.ucsb.edu/~stp/

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Block question
by Brian Klump 24 Jul '98

24 Jul '98

Is there a function simiar to VisualWorks valuesNowOrOnUnwindDo: for blocks? For those who haven't used VW, it simply executes no matter what happens in the block. Also, does anyone have any sort of larger docs on Squeak syntax, or or a FAQ such as "things in VW/VA/VSE/etc that aren't in Squeak under name X but a simiar func is here"? If not, mnaybe it would be a good idea for those using other environments to keep some sort of list of differences and we could find a wayto put them on the wikki server or something? Just some random mumblings...keep up the good work! Squeak rocks! -Brian Klump _________________________________________________________ DO YOU YAHOO!? Get your free @yahoo.com address at http://mail.yahoo.com

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