April 2013 - Pharo-dev - lists.pharo.org

Re: [Pharo-project] Stroke of genius

by Sven Van Caekenberghe

On 15 Apr 2013, at 15:07, "Sean P. DeNigris" <sean(a)clipperadams.com> wrote: > Sven Van Caekenberghe-2 wrote >> the little fact that it is incremental - it updates and saves the same >> image based on 1 metacello configuration - is really a stroke of genius. >> It saves an enormous amount of time as in the past I always did a complete >> build from scratch. Updating servers is now really a joy. > > Sounds great! And, I don't exactly understand ;) Can you say more about that feature? Building a new image goes like this $ ./vm.sh Pharo.image save test $ ./vm.sh test.image config http://mc.stfx.eu/XXX ConfigurationOfBetaNineT3 --install=bleedingEdge --username=XXX --password=XXX The Pharo.image is 'empty' as far as your own code is concerned, the config loads lots of dependencies. A build takes 10 minutes or so. But the next time, you can do only the second part $ ./vm.sh test.image config http://mc.stfx.eu/XXX ConfigurationOfBetaNineT3 --install=bleedingEdge --username=XXX --password=XXX The test.image contains all your project specific code, and loading the config just checks all dependencies and only loads what has changed, incrementally. It only takes some 10s of seconds. It never occurred to me that this was the way to go, but the config handler does it by default. Maybe it is just me, but I had the impression that everybody (including CIs) always built from scratch (more or less, there were staged systems), while it is actually quite practical to keep on updating the same image for a much faster turn around. Sven -- Sven Van Caekenberghe http://stfx.eu Smalltalk is the Red Pill

April 15, 2013

Re: [Pharo-project] WhatsUp from: 2013-04-15 until: 2013-04-30

by Goubier Thierry

Le 15/04/2013 15:30, stephane ducasse a Ã©crit : >>> >> >> Porting SmaCC on 2.0 > nice. If you need an integration server. > >> Writing configurations for AltBrowser and Jejak. > nice too > >> Started looking at Marpa > what is it? A nice, more general way of parsing Context Free Grammars with a better algorithm not restricted to LR(k) grammars (see http://jeffreykegler.github.io/Marpa-web-site/) I'd really like to make it a pure Smalltalk parser, to be able to study the underlying algorithm. And SmaCC already has some infrastructure to handle that, like a grammar parser (as well as the Scanner infrastructure). The promise of parsing with any CFG grammar (and all LR(k) grammars in linear time) is convincing. Thierry >> Started the switch to 2.0 as professional platform. > > good. >> >>> ### What's next, until 2013-04-30 (*): >> >> Study and understand Marpa as an alternative to porting SmaCC-GLR to Pharo. >> Improve AltBrowser functionality as my only browser under Pharo 2.0. >> >> Thierry >> -- >> Thierry Goubier >> CEA list >> Laboratoire des Fondations des SystÃ¨mes Temps RÃ©el EmbarquÃ©s >> 91191 Gif sur Yvette Cedex >> France >> Phone/Fax: +33 (0) 1 69 08 32 92 / 83 95 >> > > > > -- Thierry Goubier CEA list Laboratoire des Fondations des SystÃ¨mes Temps RÃ©el EmbarquÃ©s 91191 Gif sur Yvette Cedex France Phone/Fax: +33 (0) 1 69 08 32 92 / 83 95

April 15, 2013

Re: [Pharo-project] WhatsUp from: 2013-04-15 until: 2013-04-30

by Sean P. DeNigris

Damien Pollet wrote > - continue updating coral, cleaning up configurations etc Yay! I was wondering... would you give us a quick status report? ----- Cheers, Sean -- View this message in context: http://forum.world.st/WhatsUp-from-2013-04-15-until-2013-04-30-tp4681440p46… Sent from the Pharo Smalltalk mailing list archive at Nabble.com.

April 15, 2013

Re: [Pharo-project] WhatsUp from: 2013-04-15 until: 2013-04-30

by Sean P. DeNigris

EstebanLM wrote > - fix 2.0 release (so Sean and everybody is happy :) Dynabooks make me happy. And anything we can do to make things easy, clear and enjoyable for new users -> our critical mass ->->-> Dynabook :) I fell in love with Squeak because it was the closest thing to Dynabook software I'd ever seen. I quickly foundered, confused by the 'interesting' code underneath. Pharo gave me new hope for a clean, beautiful, understandable system on which I could build my visions and dreams. With every release, I feel less of the infrastructure holding me back. With AST and the new debugger, Morphic is the only mountain I can see in my path, but the new text model should provide a nice tunnel through... at least for my tool building efforts ;) ----- Cheers, Sean -- View this message in context: http://forum.world.st/WhatsUp-from-2013-04-15-until-2013-04-30-tp4681440p46… Sent from the Pharo Smalltalk mailing list archive at Nabble.com.

April 15, 2013

Re: [Pharo-project] WhatsUp from: 2013-04-15 until: 2013-04-30

by stephane ducasse

>> > > Porting SmaCC on 2.0 nice. If you need an integration server. > Writing configurations for AltBrowser and Jejak. nice too > Started looking at Marpa what is it? > Started the switch to 2.0 as professional platform. good. > >> ### What's next, until 2013-04-30 (*): > > Study and understand Marpa as an alternative to porting SmaCC-GLR to Pharo. > Improve AltBrowser functionality as my only browser under Pharo 2.0. > > Thierry > -- > Thierry Goubier > CEA list > Laboratoire des Fondations des SystÃ¨mes Temps RÃ©el EmbarquÃ©s > 91191 Gif sur Yvette Cedex > France > Phone/Fax: +33 (0) 1 69 08 32 92 / 83 95 >

April 15, 2013

Re: [Pharo-project] WhatsUp from: 2013-04-15 until: 2013-04-30

by Sean P. DeNigris

EstebanLM wrote > - fix 2.0 release (so Sean and everybody is happy :) :) ----- Cheers, Sean -- View this message in context: http://forum.world.st/WhatsUp-from-2013-04-15-until-2013-04-30-tp4681440p46… Sent from the Pharo Smalltalk mailing list archive at Nabble.com.

April 15, 2013

Re: [Pharo-project] WhatsUp from: 2013-04-15 until: 2013-04-30

by Sean P. DeNigris

Marcus Denker-4 wrote > - Opal integration > - AST interpreter integration Exciting! ----- Cheers, Sean -- View this message in context: http://forum.world.st/WhatsUp-from-2013-04-15-until-2013-04-30-tp4681440p46… Sent from the Pharo Smalltalk mailing list archive at Nabble.com.

April 15, 2013

Re: [Pharo-project] DateAndTime bug: we should do something about it

by Igor Stasenko

On 15 April 2013 12:14, Henrik Johansen <henrik.s.johansen(a)veloxit.no> wrote: > > On Apr 13, 2013, at 12:16 AM, Igor Stasenko wrote: > >> >> But that's fine.. now look at >> >> secondsWhenClockTicks >> >> "waits for the moment when a new second begins" >> >> | lastSecond | >> >> lastSecond := self primSecondsClock. >> [ lastSecond = self primSecondsClock ] whileTrue: [ (Delay >> forMilliseconds: 1) wait ]. >> >> ^ lastSecond + 1 >> >> that is complete nonsense. Sorry. >> >> This code relying on primSecondsClock resolution, which is..... (drum >> roll..... ) >> 1 second.. >> >> then it is combined with millisecondClockValue , as you see later to get >> system time with millisecond precision.. >> >> I am not genius in math and physics.. but even i understand that if >> you measurement has error X >> you cannot get more precision than X, even if you combine it with >> another measurement with higher precision. >> >> (But i can be wrong with that.. if so, please explain why) > > Because, as Levente said in code, resolution != accuracy. > When you measure a single sample, sure, that value has an error of max resolution / 2. > But when you measure when that value _changes_, you have an error of the underlying accuracy / 2. > Clock s value: 1 2 > resolution: |_______|_______| > accuracy: ||||||||||||||||||||||||||||||||||| > ^ > Here's to hoping the above ascii art(?) worked! > > So no, that method is not complete nonsense. > Okay. Now i rewriting the code which uses new primitive (primUTCMicrosecondClock), and then we will no longer need this startup logic nor wrap around check & other gory details... just use a primitive. > Cheers, > Henry -- Best regards, Igor Stasenko.

April 15, 2013

Re: [Pharo-project] WhatsUp from: 2013-04-15 until: 2013-04-30

by Damien Pollet

On 15 April 2013 07:00, <seaside(a)rmod.lille.inria.fr> wrote: > ### Here's what I've been up to since the last WhatsUp: > - loaded Coral into Pharo 3.0 (with Camillo) - little fixes to vm download scripts (curl/wget) > ### What's next, until 2013-04-30 (*): > - continue updating coral, cleaning up configurations etc -- Damien Pollet type less, do more [ | ] http://people.untyped.org/damien.pollet

April 15, 2013

Re: [Pharo-project] Videos: FileSystem-Git

by Sean P. DeNigris

Stephan Eggermont wrote > FileSystem-Git > https://www.youtube.com/watch?v=4qld2mDIbg4 Thank you Stephan! Will these be eventually matched up to the screencast (I thought I read that somewhere), or is this the final product ( which is already great :) )? ----- Cheers, Sean -- View this message in context: http://forum.world.st/Videos-FileSystem-Git-tp4681318p4681543.html Sent from the Pharo Smalltalk mailing list archive at Nabble.com.

April 15, 2013