Self-interest November 2003

self-interest@lists.selflanguage.org

13 participants
14 discussions

OOPSLA 2003
by Steve Dekorte 16 Mar '04

16 Mar '04

Just noticed that Dave is giving what looks like a really interesting talk at OOPSLA 2003: http://oopsla.acm.org/oopsla2003/files/key-4.html Any hope for a protos workshop this year? Everything seems to be about design patterns or Agile programming. Borrrrrring. :-) Cheers, Steve OSX freeware and shareware: http://www.dekorte.com/downloads.html

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Self implementation using Smalltalk
by Leandro Quiroga 23 Dec '03

23 Dec '03

Hello, I'm studing computer science and I have to implent a self enviroment with visualworks. Do you know where can I find information?? Do you know about some implementation for Windows?? Thanks Leandro

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Self OS X jaguar
by christian.hresko 30 Nov '03

30 Nov '03

okay, i just installed jaguar, and downloaded all the latest Self 'stuff.' for the life of me i can't get self to work. this happened before. if i try to use the SelfDroplet, i get: Last login: Tue Jan 14 01:14:15 on ttyp1 cd "${SELF_WORKING_DIR}"/objects; ../vm/mac_osx/vmWelcome to Darwin! _project/build/Self.app/Contents/MacOS/Self -s "/Users/chresko/Desktop/Self/objects/Demo.snap" [chresko:~] chresko% cd "${SELF_WORKING_DIR}"/objects; ../vm/mac_osx/vm_project/build/Self.app/Contents/MacOS/Self -s "/Users/chresko/Desktop/Self/objects/Demo.snap" SELF_WORKING_DIR: Undefined variable. if i launch self from the command line, and try to do the the _RunScript deal, i get numerous errors which i don't understand. how on earth do you get self working under OS X, jaguar? if i edit the applescript by replacing SELF_WORKING_DIR with the correct directory, it still doesn't work. all of my self folders/directories are on my desktop. if someone could point the way, i'd appreciate it. thanks, christian

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Position
by helenameyer2000 26 Nov '03

26 Nov '03

How do you get the position and height of a pluggableOutliner? How can you measure if an object is outside the screen? The reason for this is that we are implementing a scrollbar to every self object. Regards Helena

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Caper needs Self Help
by Paul Chapman 26 Nov '03

26 Nov '03

My other message today reveals that I've still been unable to get Self running under Cygwin. So here are a couple of questions about Self the answers to which would help me with Caper's semantics. (1) Is there any use for an inline object-with-code? It seems to me that there isn't, because there is no selector associated with such an object, and therefore it's rather difficult to invoke the code. (2) Conversely, what happens if a keyword slot contains an object- without-code? I assume that accessing the object in such a slot by sending a keyword message to its container would return (a copy of) the object itself with the parameter slots filled in. Is that right? I'm trying to work out what the deep meaning of Self's objects-with- and-without-code is (cf Smalltalk's separation of methods and instance variables into two namespaces), in order to find the best way for Caper to distinguish between "values" (evaled at definition) and "methods" (evaled at invocation) in fields. Thanks to anyone who can help. Cheers, Paul

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Re: [self-interest] Re: blocks
by Pablo de Marcos 21 Nov '03

21 Nov '03

Steve, sorry but in the example [ add = method(n, block(x, x + n)) ] i don't understand ... Where does x live? If I invoke a = add(10) then it signified to execute a method with 1 argument (n) whose functionality is to process x+n, but where is x? Thanks... Pablo From: Steve Dekorte <steve(a)dekorte.com> Reply-To: self-interest(a)yahoogroups.com To: self-interest(a)yahoogroups.com Subject: Re: [self-interest] Re: blocks Date: Thu, 20 Nov 2003 13:30:16 -0800 On Nov 20, 2003, at 12:35 PM, Jecel Assumpcao Jr wrote: > It certainly does work, but I wouldn't call it simple. Since Self > doesn't allow non-lifo blocks, I'll rewrite your example in Smalltalk > instead: > > MyObject>>add: n > ^ [:x | x + n] > > a := myObject add: 10. > b := myObject add: 20. > > Transcript show: (a value: 10). > Transcript show: (b value: 10). I don't understand why this is simpler. Could you explain? It's not important, I'm just confused and would prefer not to be. :-) Here's a simplified Io version: add = method(n, block(x, x + n)) a = add(10) b = add(20) a(10) print b(10) print -- Steve Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ _________________________________________________________________ Charla con tus amigos en línea mediante MSN Messenger: http://messenger.latam.msn.com/

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Re: [self-interest] Re: Trouble running Self/x86
by harald＠gliebe.de 18 Nov '03

18 Nov '03

Paul, I'm afraid the cygwin version of Self is currently broken - probably because of some changes in memory allocation within cygwin.dll (cygwin 1.3.19 is the last version I'v used successfully). Unfortunatly I'm not able to spend more time on this problem at the moment. To try out Self you could try to go back 1.3.19 (I'm not sure if you can still find it). Alternatively, to try the more stable Linux version without installing Linux, is to use Knoppix, a bootable CD image with a fully configured Linux-System: http://www.knopper.net/knoppix/index-en.html Regards, Harald Paul Chapman <yahoo(a)igblan.com> schrieb am 15.04.2003, 11:42:35: > Jecel, > > > What is the "-c" option? The versions I use don't have that. > > Not sure. > > > What happens if you run Self without any snapshot at all? Do you > get to > > the VM# prompt ok? > > Didn't know you could do that. I get the same error message. I > guess it's not a snapshot problem, then. > > > I hope that someone figures out your problem so you can try Self - > it is > > certainly worth looking into even if you then decide to use > something > > else. > > I've been itching to play with it ever since first discovering it a > year ago. > > Cheers, Paul > > > > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/

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"Organizing programs without classes"
by "J. Baltasar García Perez-Schofield" 10 Nov '03

10 Nov '03

Hi, there ! I've been studying this paper in the weekend, and, although I've found many things interesting, I can't understand the example which is presented at the beginning of the paper. It's said that "polygon traits" wold hold the draw() and copy() methods, while the "prototypical polygon" would hold the parent attribute, and the "vertices" attribute (BTW, how an attribute is marked in self as a "parent" one?). My question is: How's that possible ? I mean, if the "draw" method is declared in the parent "traits", then it has no access to the vertices list, as they are declared in the "prototype". So it is impossible to write a complete "draw" method. I suppose the list of vertices is declared in the "traits" object, at least in a minimalist way, and then repeated in its full format in the prototype polygon. Or perhaps the "draw" method in the traits object is an empty one, and the method is repeated in the polygon prototype object. Salud ! ======================================= PBC - J. Baltasar García Perez-Schofield Dep. Informática, Universidad de Vigo, España (Spain)

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Kevo
by davideddyshaw 09 Nov '03

09 Nov '03

Does anybody have the Mac Kevo distribution to post or email? It was posted previously but is not archived here Many thanks if you do

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Caper: a Self-inspired language in prototype
by Paul Chapman 07 Nov '03

07 Nov '03

Members of this group may be interested in Caper, a Self-like language I am designing and currently prototyping. I have started a kind of development blog at: http://www.igblan.free-online.co.uk/igblan/caper/ Feel free to take a look and rip it apart. :) Cheers, Paul

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Self-interest November 2003