Self-interest February 2014

self-interest@lists.selflanguage.org

7 participants
10 discussions

Images (and webBrowser)
by SeanDeNigris 21 Feb '14

21 Feb '14

I want to use a jpeg as a morph - I saw references to webBrowser doing this, but I don't see it in 4.5 - is there an example anywhere of making an image morph from a local jpeg on disk? Thanks, Sean -- View this message in context: http://forum.selflanguage.org/Images-and-webBrowser-tp7572617.html Sent from the Self mailing list archive at Nabble.com.

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Use epoll instead of select on linux
by ardeujho 21 Feb '14

21 Feb '14

I've created a pull request that replaces use of 'select' with 'epoll' for Self running on Linux: https://github.com/russellallen/self/pull/32 Epoll has better performance than select when there is a large number of open files and does not have the 1,024 file descriptor limit.

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Re: [self-interest] Bold outliner items
by David Ungar 09 Feb '14

09 Feb '14

If you are interested, see the talk Harold Ossher and I gave at SPLASH this past fall. On Feb 6, 2014, at 5:39 PM, Jecel Assumpcao Jr. <jecel(a)merlintec.com> wrote: > Russell Allen wrote: > > > Slots can be marked as public or private (or unmarked). This is purely > > documentational and not enforced at all, but slots marked public get > > bolded by outlines. > > This is true in Self 4.x but wasn't the case in Self 1 and 2 where the > privacy declaration made a difference in slot lookup. A private slot > would be found be an implicit self send but not by a normal send. This > meant that "mumble" and "self mumble" might do different things (note > that they still might if 'mumble' is a temporary variable in the current > method, but that is a different issue). > > Unfortunately this privacy stuff combined with parent priorities and the > tie breaker rule to make it really hard for programmers to guess what a > piece of code would do. So it was all ripped out in Self 3 until a > proper solution could be found but the privacy declarations remained as > a kind of comment to be ignored by the VM. The proper solution was Us > (do we have a link to the relevant papers for that on the site?). > > -- Jecel > >

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Bold outliner items
by SeanDeNigris 07 Feb '14

07 Feb '14

Why are they bold? I though maybe it meant they had parent implementations or comments, but neither seemed correct… Thanks, Sean -- View this message in context: http://forum.selflanguage.org/Bold-outliner-items-tp7572606.html Sent from the Self mailing list archive at Nabble.com.

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Hosting Selflanguage.org on Self
by Russell Allen 06 Feb '14

06 Feb '14

Hi guys, I promised that I'd write up how the Self websites are being hosted. We rely on Wordpress for our blog, and Nabble for our mailing list archive. Downloads are served up from a Amazon EC2 bucket and our source files for the default World and the VM are on GitHub. However www.selflanguage.org, handbook.selflanguage.org and bibliography.selflanguage.org are all hosted ourselves. They are on a Fedora 19 VM at DigitalOcean. Each site is a Self world running a Self webserver, behind nginx. Each Self world is running in a SELinux sandbox which allows it (hopefully!) only enough permissions to run and be a server on a TCP port. Tieing all of this together is a first pass at Self-focused management software. Users can upload, run and connect to running Self worlds (command line only so far). Each world is given a port, if it runs a webserver on that port then it will be live at: snapshotname.username.messaging.io External domain names can then be aliased to these names. Eg, selflanguage.org is aliased to www.self.messaging.io (ie a snapshot called 'www' run by the 'self' user) So in essence it is a very small Self cloud. The management software at the moment is a few small python and bash scripts with < 1000 lines all up, and it doesn't scale beyond a single Linux VM. You talk to it through a small python script called 'mio' which connects via XML-RPC over https. I've put a sample session below. I plan on making a couple more fixes/enhancements then maybe opening it up to people on this mailing list to play with if anyone's interested. Russell Here is an example session: > mio list basic > mio copy basic test > mio list basic test > mio wake test > mio awake test > mio connect test Connecting... (^c to disconnect) for I386: LogVMMessages = true for I386: PrintScriptName = true for I386: Inline = true for I386: SICDeferUncommonBranches = false (not implemented) for I386: SICReplaceOnStack = false (not implemented) for I386: SaveOutgoingArgumentsOfPatchedFrames = true Welcome to the Self system! (Version 4.4) Copyright 1992-2011 AUTHORS. See the legal/LICENSE file for license information and legal/AUTHORS for authors. Type _Credits for full credits. VM version: 4.1.13 "Self 35" 3 + 4 7 "Self 36" ^C Disconnected > mio tell test save > mio sleep test > mio awake > mio list basic test > mio delete test > mio list basic

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Webserver
by Russell Allen 06 Feb '14

06 Feb '14

Hi guys, I've pushed the webserver code I've been working with to a 'webserver' branch on the Github sources. It's still bare bones and not up to any spec but at least it will work behind nginx which previous code doesn't really. As I gradually add the necessary minimum features I'll keep it updated and when its more or less conforming to at least the HTTP 1.0 spec I'll merge it into mainline. If you do file it in it creates a 'webserver' object in globals in the applications category. Cheers, Russell

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Animation
by sean＠clipperadams.com 05 Feb '14

05 Feb '14

Most of the Self's animation effects described in "Animation: From Cartoons to the User Interface" do not seem to be present in the latest version. e.g. Use of cartoon-style motion blur allows Self objects to move quickly and still maintain their comprehensibility. Self objects arrive and depart smoothly, without sudden materializations and disappearances, and they rise to the front of overlapping objects smoothly through the use of dissolve. Anticipating motion with a small contrary motion… Were these ever used in practice? If so, why were they removed? Thanks, Sean

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A few beginner questions...
by sean＠clipperadams.com 05 Feb '14

05 Feb '14

I'm really enjoying Self's IDE. My beloved Smalltalk tools feel abstract and clunky in comparison ;) A few questions: * For buttons created via menu, how do you use the "Set target" button? (I ended up setting the target by opening an outliner on the button and setting the target in the buttonActionObject) * Why does the gasTank global have methods copied from the trait? e.g. addAtom appears in both places * Is there a way to access the current world? I've been doing "desktop worlds first" * Is there an easy way to bring up an outliner on an object when one doesn't have access to a "GetIt" button - say as the result of a button click? The best I came up with is "(desktop worlds first outlinerForMirror: reflect: object) popUpInWindow" Thanks! - Sean

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Difference in command line argument order in Linux and OS X
by Russell Allen 02 Feb '14

02 Feb '14

Just in case anyone has any ideas, I get this in OS X as expected: Macintosh-2:mio russellallen$ Self -port 4000 -headless Self Virtual Machine Version 4.1.13, Thu 09 Jan 14 15:06:29 Mac OS X i386 (4.4-272-g885323f-dirty) Copyright 1989-2003: The Self Group (type _Credits for credits) for I386: LogVMMessages = true for I386: PrintScriptName = true for I386: Inline = true for I386: SICDeferUncommonBranches = false (not implemented) for I386: SICReplaceOnStack = false (not implemented) for I386: SaveOutgoingArgumentsOfPatchedFrames = true VM# _CommandLine <0>: ( | parent* = <1>. | object array: {'/Applications/Self Control.app/Contents/Resources/Self.app/Contents/MacOS/Self', '-port', '4000', '-headless'} ) but I get this in Linux (Fedora 19): [self@messaging ~]$ ./selfvm -port 4000 -headless Self Virtual Machine Version 4.1.13, Sat 01 Feb 14 08:00:32 Linux i386 (4.5.0-7-gb833000) Copyright 1989-2003: The Self Group (type _Credits for credits) for I386: LogVMMessages = true for I386: PrintScriptName = true for I386: Inline = true for I386: SICDeferUncommonBranches = false (not implemented) for I386: SICReplaceOnStack = false (not implemented) for I386: SaveOutgoingArgumentsOfPatchedFrames = true VM# _CommandLine <0>: ( | parent* = <1>. | object array: {'./selfvm', '-port', '-headless', '4000'} ) Why on earth would the order of the command line arguments vary between platforms? Or more precisely, why is Linux reordering my arguments? Russell

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Unhooking Connectors
by sean＠clipperadams.com 01 Feb '14

01 Feb '14

When you pick up the = attached to the top left of a value outliner, and drop in in the middle of nowhere, the effect is unclear. After, if you move the target, the = re-attaches. I would think that unattaching would have broken the link (nil it out). Is there a use case for leaving it hanging out? If not, it might be good to have a drop-rejected animation that brings it back to its original target unless it is dropped on a valid new target.

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Self-interest February 2014