August 2014 - Pharo-dev - lists.pharo.org

Re: [Pharo-dev] Looking for PhD students

by Natalia Tymchuk

Hello, Michele. I still want to get PhD position and I'm working on the idea you suggested me. Also I'm not sure if you know, but Voronyj diagram project won at Roassal Contest and I made the presentation about it on ESUG. In Cambridge I spoke with some people and got a few ideas, what to do next. You can look at the site: http://natalia.tymchuk.me/RTVoronyjDiagram/ the video for Contest: http://youtu.be/SlJptrlBbho the videos from presentation: https://www.youtube.com/watch?v=IUpndOXOsnY&list=UUO-vBhaKVZf0al-ISMMPvRw https://www.youtube.com/watch?v=XsF3YaC1m_w&list=UUO-vBhaKVZf0al-ISMMPvRw (I just realised, that I didn't mention you during the presentation. I'm really sorry about it, I was very nervous and didn't say the half from what I planed. But when I was speaking with people personaly I always said that it was your idea.) So, please let me know what do you think about me and my chances. Best regards, Natalia On Aug 27, 2014, at 10:40 AM, Michele Lanza <michele.lanza(a)usi.ch> wrote: > Dear all, > this is an informal call for PhD students. Iâm Michele Lanza, head of the REVEAL research group from the University of Lugano in Switzerland, active in Smalltalk since many years (16 to be precise). The group, which you might know from tools like CodeCity, SpyWare, Softwarenaut, SPO, etc. and its involvement in Moose and Pharo in general, currently features 4 PhD students and 1 postdoc. 3 PhD students program with and in Pharo, namely Yuriy Tymchuk, Roberto Minelli, and Tommaso dal Sasso, who recently attended ESUG. > Iâm looking for one or maybe even two PhD students. Topics with me are normally open and agreed upon by both sides, as long as itâs fun and relevant. I have some funky open topics. The only requirements are an open mind, good OO skills, the willingness to learn and to work hard. > > Drop me a line if youâre interested or know anyone whoâs interested. > > Thanks > > Michele > > BTW, I could say things about the nice climate in Lugano, the relatively good salary conditions, the generous available funding for traveling and hardware, etc. but if you come only for that you better stay away from me :-)

Aug. 27, 2014

Re: [Pharo-dev] athens wrapper for (Form-)Canvas

by Igor Stasenko

On 27 August 2014 09:42, stepharo <stepharo(a)free.fr> wrote: > Igor > > we should integrate TxText as soon as the new integration handle > configurations (normally next week). > So can you get prepared? > > I can make configuration with latest versions.. but that won't make things more 'prepared' in aspect that i am still did not took time to think about high-level API , so there's almost none at the moment.. and it is still a big question to me, how it should look like. i need a list of requirements from perspective of text editor widget, to at least know what API should be there.. because if people start using it without API, then it will be hard to do any changes later, once people integrate it into own projects.. i just don't want the complexity overflow us, we should keep things simple enough, hiding implementation details behind. We should discuss that.. because yeah.. you can create morph, place it on screen.. but that don't makes it easy or convenient to use. Stef > > > On 26/8/14 17:43, Igor Stasenko wrote: > > > > > On 26 August 2014 00:24, Nicolai Hess <nicolaihess(a)web.de> wrote: > >> I tried an alternative approach for rendering Morphs on athens without >> implementing drawOnAthensCanvas for every morph: >> >> 13866 <https://pharo.fogbugz.com/default.asp?13866> >> AthensFormCanvasWrapper >> >> still struggling with the text rendering. Yet I am not sure what is the >> better approach. >> > > A new text model, which i am working on :) > > >> >> Nicolai >> > > > > -- > Best regards, > Igor Stasenko. > > > -- Best regards, Igor Stasenko.

Aug. 27, 2014

Glorp Login>>#encodingStrategy

by Sven Van Caekenberghe

It seems that Glorp Login>>#encodingStrategy is not used by the NativePostgresDriver yet it is required to set it to a non nil value to get things working. This feels like a hack or something unfinished. Sven

Aug. 27, 2014

Re: [Pharo-dev] Substitution of ' to " in TextEditor>>shiftEnclose

by Nicolas Cellier

I encountered this in Squeak too, because French keyboard is not better than german one :( Nicolas Cellier uploaded a new version of ST80 to project The Trunk: http://source.squeak.org/trunk/ST80-nice.136.mcz ==================== Summary ==================== Name: ST80-nice.136 Author: nice Time: 4 August 2011, 10:43:00.836 am UUID: 6f8b2f4c-8c8c-48a8-ba32- bb5b37d827d0 Ancestors: ST80-ul.135 #shiftEnclose: is hardcoding the keyboard layout, which is not compatible with foreign keyboards and modern VM, and prevents correct enclosing to work. This version rather use a normal #enclose: A (ParagraphEditor initialize) postscrip is necessary. =============== Diff against ST80-ul.135 =============== 2014-08-27 17:11 GMT+02:00 Max Bareis <max.bareis(a)me.com>: > > > > > > I am curious, because this substitution does not make any sense to > > me. The keyCharacter is always the "real" character ( $( instead > > of $9 ). Also it seems that this substitution reduces the keyboard > > to the en-Layout, therefore breaks the separation of concerns. > > > > > > > > I hope this gets resolved, as it is really annoying with a german > > Keyboard. > > > > And look at the issues: > > 11436 <https://pharo.fogbugz.com/default.asp?11436> and > > 4646 <https://pharo.fogbugz.com/default.asp?4646> > > > >Should the core team take action? > > > >Stef > > For me, there is no urgency. I sent it to the mailing list, because I used > the wrong words for the issue search and didn't find any issue. As it is > already on the issue list and I have a workaround (replacing the method in > my download bash file for zeroconf) it is ok. > > Max > > > > > > > -- > View this message in context: > http://forum.world.st/Substitution-of-to-in-TextEditor-shiftEnclose-tp47750… > Sent from the Pharo Smalltalk Developers mailing list archive at > Nabble.com. > >

Aug. 27, 2014

Re: [Pharo-dev] Substitution of ' to " in TextEditor>>shiftEnclose

by Max Bareis

> > I am curious, because this substitution does not make any sense to > me. The keyCharacter is always the "real" character ( $( instead > of $9 ). Also it seems that this substitution reduces the keyboard > to the en-Layout, therefore breaks the separation of concerns. > > > > I hope this gets resolved, as it is really annoying with a german > Keyboard. > > And look at the issues: > 11436 <https://pharo.fogbugz.com/default.asp?11436> and > 4646 <https://pharo.fogbugz.com/default.asp?4646> > >Should the core team take action? > >Stef For me, there is no urgency. I sent it to the mailing list, because I used the wrong words for the issue search and didn't find any issue. As it is already on the issue list and I have a workaround (replacing the method in my download bash file for zeroconf) it is ok. Max -- View this message in context: http://forum.world.st/Substitution-of-to-in-TextEditor-shiftEnclose-tp47750… Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.

Aug. 27, 2014

Re: [Pharo-dev] Fwd: A UTC based implementation of DateAndTime

by Sven Van Caekenberghe

Sure, I am not suggesting to add anything, I was just commenting on the fact that Date does indeed sometimes act a bit unexpected. On 27 Aug 2014, at 16:56, stepharo <stepharo(a)free.fr> wrote: > Sven > long time ago I was believing that this is important to have a nice and rich model for the core but on dates/calendars it is complex so > what I would do is to have a small and working code for Date/ and make sure that more complex model can be loaded by people. > > Stef > > On 27/8/14 12:02, Sven Van Caekenberghe wrote: >> Pharo's DateAndTime is not the same as Squeak's. >> >> We are properly UTC based/aware, see #secondsSinceMidnightUTC and #julianDayNumberUTC. >> >> It is indeed perfectly possible to represent time using one number, but it will not be a SmallInteger. And depending on precision is will be a very large number. The split julian day number - seconds since midnight feels quite logical and practical to me. >> >> But yes, the 'date' concept is often confusing and difficult to handle in the light of timezones. To me, an old school, abstract Date object year/month/day would make sense. But then again, there are so many calendar systems, chronology is quite complicated. >> >> BasicJulianDate ? >> >> On 27 Aug 2014, at 01:10, Sean P. DeNigris <sean(a)clipperadams.com> wrote: >> >>> From >>> http://forum.world.st/What-s-up-on-build-squeak-org-tp4760266p4760319.html : >>> >>> >>> David T. Lewis wrote >>>> I have been working on a variation of class DateAndTime that replaces its >>>> instance variables (seconds offset jdn nanos) with two instance variables, >>>> utcMicroseconds to represent microseconds elapsed since the Posix epoch, >>>> and >>>> localOffsetSeconds to represent the local time zone offset. When >>>> instantiating >>>> the time now, A single call primitiveUtcWithOffset is used to obtain these >>>> two values atomically as reported by the underlying platform. >>>> >>>> There are several advantages to this representation of DateAndTime, the >>>> most >>>> important of which is that its magnitude is unambiguous regardless of >>>> daylight >>>> savings transitions in local time zones. >>>> >>>> This is my attempt to address some historical baggage in Squeak. The VM >>>> reports time related to the local time zone, and the image attempts to >>>> convert to UTC (sometimes incorrectly). A UTC based representation makes >>>> the >>>> implementation of time zone tables more straightforward (see for example >>>> the Olson time zone tables in TimeZoneDatabase on SqueakMap). >>>> >>>> I am attaching the source code as a SAR file that can be loaded into a >>>> fully >>>> updated Squeak trunk image. The conversion process is slow, so be patient >>>> if you load it. >>>> >>>> This can be run on either an intepreter VM or Cog, but if you use Cog, >>>> please >>>> use a version dated June 2013 or later (the VM in the Squeak 4.5 >>>> all-in-one >>>> is fine). >>>> >>>> I am also attaching a copy of LXTestDateAndTimePerformance, which can be >>>> used to compare the performance of some basic DateAndTime functions. >>>> >>>> Performance of the UTC based DateAndTime is generally favorable compared >>>> to >>>> the original. Here is what I see on my system (smaller numbers are >>>> better). >>>> >>>> LXTestDateAndTimePerformance test results using the original Squeak >>>> DateAndTime >>>> on an interpreter VM: >>>> { >>>> #testNow->10143 . >>>> #testEquals->30986 . >>>> #testGreaterThan->80199 . >>>> #testLessThan->75912 . >>>> #testPrintString->10429 . >>>> #testStringAsDateAndTime->44657 >>>> } >>>> >>>> LXTestDateAndTimePerformance test results using the new UTC based >>>> DateAndTime >>>> on an interpreter VM: >>>> { >>>> #testNow->6423 . >>>> #testEquals->31625 . >>>> #testGreaterThan->22999 . >>>> #testLessThan->18514 . >>>> #testPrintString->12502 . >>>> #testStringAsDateAndTime->32912 >>>> } >>>> >>>> (CC to Brent Pinkney, author of the excellent Squeak Chronology package) >>>> >>>> Dave >>>> >>>> >>>> >>>> >>>> >>>> UtcDateAndTime-dtl.sar (40K) >>>> <http://forum.world.st/attachment/4760319/0/UtcDateAndTime-dtl.sar> >>>> LXTestDateAndTimePerformance.st (2K) >>>> <http://forum.world.st/attachment/4760319/1/LXTestDateAndTimePerformance.st> >>> >>> >>> >>> >>> ----- >>> Cheers, >>> Sean >>> -- >>> View this message in context: http://forum.world.st/Fwd-A-UTC-based-implementation-of-DateAndTime-tp47749… >>> Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com. >>> >> >> >> > >

Aug. 27, 2014

Re: [Pharo-dev] Pharo Development Robustness (was: Why Bloc?)

by stepharo

Hi sean Thanks for this mail!!!! About bloc --------- I discussed with alain about this point at ESUG. Alain would like to finish the handlers and a couple of other points, clean everything and release a first version. The problem is that alain is often doing trial and changes. Here is where I think you can help: - turn some of the example for the layouts into tests - start to clean/revisit some basic morphs so that we can turn them into bloc counterparts easily. - I started to look at buttonMorph* - I started to rewrite MenuMorph because it is full of old code. I would like to remove the direct manipulation because it adds a lot of problems. If you want to join let me know. About TxText ------------ - Igor added morph - we should make sure that the configuration is loading in 40 -now mocketry is loading in 40 so the configuration of TxText should be working. - we should check the current use of TextMorph and friends and use TxText Stef On 27/8/14 01:48, Sean P. DeNigris wrote: > The most important items on our IU Experience agenda - Tx and Bloc - are > totally reliant on two (brilliant, talented...) programmers while the rest > of the community hopes and waits. In no way to I lack appreciation for Alain > and Igor's efforts, but this does not seem like a robust or efficient use of > our manpower... So, I guess what I'm really asking for both projects is - > how can we help? > > > > ----- > Cheers, > Sean > -- > View this message in context:http://forum.world.st/Pharo-Development-Robustness-was-Why-Bloc-tp4774980.html > Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com. > >

Aug. 27, 2014

Re: [Pharo-dev] Substitution of ' to " in TextEditor>>shiftEnclose

by stepharo

> > is a bug or a feature. For german keyboards it causes that > pressing the single Apostroph (which is reached via shift-#) is > substituted to ". So enclosing a textblock and pressing ' leads to > comments around the block, which is really annoying. > > I am curious, because this substitution does not make any sense to > me. The keyCharacter is always the "real" character ( $( instead > of $9 ). Also it seems that this substitution reduces the keyboard > to the en-Layout, therefore breaks the separation of concerns. > > Is there any reason, why this substitution takes place? > > Regards > > Max > > > > I hope this gets resolved, as it is really annoying with a german > Keyboard. > > And look at the issues: > 11436 <https://pharo.fogbugz.com/default.asp?11436> and > 4646 <https://pharo.fogbugz.com/default.asp?4646> > Should the core team take action? Stef > > Nicolai

Aug. 27, 2014

Re: [Pharo-dev] Fwd: A UTC based implementation of DateAndTime

by stepharo

Sven long time ago I was believing that this is important to have a nice and rich model for the core but on dates/calendars it is complex so what I would do is to have a small and working code for Date/ and make sure that more complex model can be loaded by people. Stef On 27/8/14 12:02, Sven Van Caekenberghe wrote: > Pharo's DateAndTime is not the same as Squeak's. > > We are properly UTC based/aware, see #secondsSinceMidnightUTC and #julianDayNumberUTC. > > It is indeed perfectly possible to represent time using one number, but it will not be a SmallInteger. And depending on precision is will be a very large number. The split julian day number - seconds since midnight feels quite logical and practical to me. > > But yes, the 'date' concept is often confusing and difficult to handle in the light of timezones. To me, an old school, abstract Date object year/month/day would make sense. But then again, there are so many calendar systems, chronology is quite complicated. > > BasicJulianDate ? > > On 27 Aug 2014, at 01:10, Sean P. DeNigris <sean(a)clipperadams.com> wrote: > >> From >> http://forum.world.st/What-s-up-on-build-squeak-org-tp4760266p4760319.html : >> >> >> David T. Lewis wrote >>> I have been working on a variation of class DateAndTime that replaces its >>> instance variables (seconds offset jdn nanos) with two instance variables, >>> utcMicroseconds to represent microseconds elapsed since the Posix epoch, >>> and >>> localOffsetSeconds to represent the local time zone offset. When >>> instantiating >>> the time now, A single call primitiveUtcWithOffset is used to obtain these >>> two values atomically as reported by the underlying platform. >>> >>> There are several advantages to this representation of DateAndTime, the >>> most >>> important of which is that its magnitude is unambiguous regardless of >>> daylight >>> savings transitions in local time zones. >>> >>> This is my attempt to address some historical baggage in Squeak. The VM >>> reports time related to the local time zone, and the image attempts to >>> convert to UTC (sometimes incorrectly). A UTC based representation makes >>> the >>> implementation of time zone tables more straightforward (see for example >>> the Olson time zone tables in TimeZoneDatabase on SqueakMap). >>> >>> I am attaching the source code as a SAR file that can be loaded into a >>> fully >>> updated Squeak trunk image. The conversion process is slow, so be patient >>> if you load it. >>> >>> This can be run on either an intepreter VM or Cog, but if you use Cog, >>> please >>> use a version dated June 2013 or later (the VM in the Squeak 4.5 >>> all-in-one >>> is fine). >>> >>> I am also attaching a copy of LXTestDateAndTimePerformance, which can be >>> used to compare the performance of some basic DateAndTime functions. >>> >>> Performance of the UTC based DateAndTime is generally favorable compared >>> to >>> the original. Here is what I see on my system (smaller numbers are >>> better). >>> >>> LXTestDateAndTimePerformance test results using the original Squeak >>> DateAndTime >>> on an interpreter VM: >>> { >>> #testNow->10143 . >>> #testEquals->30986 . >>> #testGreaterThan->80199 . >>> #testLessThan->75912 . >>> #testPrintString->10429 . >>> #testStringAsDateAndTime->44657 >>> } >>> >>> LXTestDateAndTimePerformance test results using the new UTC based >>> DateAndTime >>> on an interpreter VM: >>> { >>> #testNow->6423 . >>> #testEquals->31625 . >>> #testGreaterThan->22999 . >>> #testLessThan->18514 . >>> #testPrintString->12502 . >>> #testStringAsDateAndTime->32912 >>> } >>> >>> (CC to Brent Pinkney, author of the excellent Squeak Chronology package) >>> >>> Dave >>> >>> >>> >>> >>> >>> UtcDateAndTime-dtl.sar (40K) >>> <http://forum.world.st/attachment/4760319/0/UtcDateAndTime-dtl.sar> >>> LXTestDateAndTimePerformance.st (2K) >>> <http://forum.world.st/attachment/4760319/1/LXTestDateAndTimePerformance.st> >> >> >> >> >> ----- >> Cheers, >> Sean >> -- >> View this message in context: http://forum.world.st/Fwd-A-UTC-based-implementation-of-DateAndTime-tp47749… >> Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com. >> > > >

Aug. 27, 2014

Re: [Pharo-dev] Sprint 29/8 still planned?

by Esteban Lorenzano

So, what is scheduled is an RMoD sprintâ¦ which is kind of a small one. Of course, everybody is invited to assist (like a public one), but it has some constraints: - there will not be a lot of people. - it will happen in the afternoon (not the full day) :) Esteban On 27 Aug 2014, at 15:53, Marcus Denker <marcus.denker(a)inria.fr> wrote: > I will checkâ¦ I thnk so, but I will check to make sure. > > On 27 Aug 2014, at 11:12, phil(a)highoctane.be wrote: > >> Is there a sprint in Lille as announced a while ago? >> >> I'd be delighted to join :-) >> >> Phil > >

Aug. 27, 2014