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

Re: [Pharo-dev] [Pharo4] First Class Global Variables

by Marcus Denker

On 03 Jul 2014, at 17:51, Marcus Denker <marcus.denker(a)inria.fr> wrote: > Hi, > > If we have meta-object describing (and thus having the power to change the semantics of) instance variables, > we need the same for Globals. > > I think the easiest is to just re-use the object hat is already there: the âbindingâ, that is, the association from > the dictionary where the global lives (e.g. the classPool for class vars, Smalltalk globals for true globals, and so on). > > SystemVersion bindingOf: âCurrent' > > The VM just cares that it is an assoiation (actually, it just care that there are two fields, but the rest of the image cares > about value and keyâ¦) > > -> we can make a subclass of Association > -> we can have the compiler forward code generation to the object that describes the global > -> we can add a nice MOP API: #read and #write: (instead of #value and #value:) > -> Programmers can subclass the GlobalVariable and change #read and #write like they want (or override > the code gen methods) as in Slots. > I have added a first GlobalVar hierarchyâ¦ it has already the code generation methods but Opal is not yet forwarding code generation (and the compiler does not yet compile bindings with the subclass). Marcus

July 4, 2014

Re: [Pharo-dev] [Pharo4] First Class Global Variables

by Marcus Denker

On 04 Jul 2014, at 08:21, Denis Kudriashov <dionisiydk(a)gmail.com> wrote: > Hi > > Classes are global variables too. How it related here? Yes, they are defined by the âSmalltalk globalsâ dictionary. To read a Global the method has the binding (the association from that global dictionary) in itâs literal frame and uses the âpush/pop LiteralVaribleâ bytecode which pushes (or stores into) the value of the binding. > And what about environments to support some kind of namespaces? Do you have plan for this? > We need them but I need to first finish other things... Marcus

July 4, 2014

Re: [Pharo-dev] [Pharo4] First Class Global Variables

by Denis Kudriashov

Hi Classes are global variables too. How it related here? And what about environments to support some kind of namespaces? Do you have plan for this? Best regards Denis 2014-07-03 19:51 GMT+04:00 Marcus Denker <marcus.denker(a)inria.fr>: > Hi, > > If we have meta-object describing (and thus having the power to change the > semantics of) instance variables, > we need the same for Globals. > > I think the easiest is to just re-use the object hat is already there: the > âbindingâ, that is, the association from > the dictionary where the global lives (e.g. the classPool for class vars, > Smalltalk globals for true globals, and so on). > > SystemVersion bindingOf: âCurrent' > > The VM just cares that it is an assoiation (actually, it just care that > there are two fields, but the rest of the image cares > about value and keyâ¦) > > -> we can make a subclass of Association > -> we can have the compiler forward code generation to the object that > describes the global > -> we can add a nice MOP API: #read and #write: (instead of #value and > #value:) > -> Programmers can subclass the GlobalVariable and change #read and #write > like they want (or override > the code gen methods) as in Slots. > > The only drawback is that you can not add an instance variables, I think, > to checkâ¦ maybe it even works? > If not, there are ways around that e.g. using some fancy Slot that does > not need an ivar but uses a weak dictionary > in a class variable, for example). > > Thus: it would be fairly easy to have the class vars be as flexible as the > slotsâ¦ and then e.g. you will be able > to put breakpoints and watchers on class vars. You could even define > globals with special behaviour the same > way as you do with Slots. > > Marcus > > >

July 4, 2014

Re: [Pharo-dev] 13422 broken and fogbugz is down

by Marcus Denker

On 04 Jul 2014, at 07:25, stepharo <stepharo(a)free.fr> wrote: > Does anybody know why fogbugz is down? > they had a problem, it was fixed around 11h morning yesterday. > On 3/7/14 16:45, Stephan Eggermont wrote: >> The fix for 13422 has broken the moose build. >> Checking if a pharo change breaks other builds would be appreciated. >> It is essential to check for changes in all other builds, as we don't run all >> tests in all builds. >> >> Thank you, >> Stephan >> > >

July 4, 2014

Re: [Pharo-dev] 13422 broken and fogbugz is down

by stepharo

ok it is up for me On 4/7/14 07:25, stepharo wrote: > Does anybody know why fogbugz is down? > > On 3/7/14 16:45, Stephan Eggermont wrote: >> The fix for 13422 has broken the moose build. >> Checking if a pharo change breaks other builds would be appreciated. >> It is essential to check for changes in all other builds, as we don't >> run all >> tests in all builds. >> >> Thank you, >> Stephan >> > > >

July 4, 2014

Re: [Pharo-dev] 13422 broken and fogbugz is down

by stepharo

Does anybody know why fogbugz is down? On 3/7/14 16:45, Stephan Eggermont wrote: > The fix for 13422 has broken the moose build. > Checking if a pharo change breaks other builds would be appreciated. > It is essential to check for changes in all other builds, as we don't run all > tests in all builds. > > Thank you, > Stephan >

July 4, 2014

Re: [Pharo-dev] 13422 broken and fogbugz is down

by stepharo

>> The fix for 13422 has broken the moose build. > https://pharo.fogbugz.com/f/cases/13422 > > >> Checking if a pharo change breaks other builds would be appreciated. >> It is essential to check for changes in all other builds, as we don't run all >> tests in all builds. This requires engineering time. Sorry we cannot if people do not help. We did our best to get funds and we fail. We requested an engineer two years in a row. > Doing so âby handâ is impossible. Sorry. > > Your help setting up the build server to do so would be appreciated. > But even than, we can not wait multiple hours for every tiny changeâ¦ so it would > need to be done in a way that it is *fast*. Exactly. > > (right now I do not even have time to get the infrastructure working again that > just runs all image tests on all submitted code). > > Marcus >

July 4, 2014

Re: [Pharo-dev] [Pharo4] First Class Global Variables

by stepharo

Sounds good. Could you read the paper guille sent to esug on the analysis use of sharedpools because having first class instance variables can really help us to make the system more explicit. Right now we have tons of different caches way to expression session reinitialization recreation on load (fuel and other). Stef On 3/7/14 17:51, Marcus Denker wrote: > Hi, > > If we have meta-object describing (and thus having the power to change the semantics of) instance variables, > we need the same for Globals. > > I think the easiest is to just re-use the object hat is already there: the âbindingâ, that is, the association from > the dictionary where the global lives (e.g. the classPool for class vars, Smalltalk globals for true globals, and so on). > > SystemVersion bindingOf: âCurrent' > > The VM just cares that it is an assoiation (actually, it just care that there are two fields, but the rest of the image cares > about value and keyâ¦) > > -> we can make a subclass of Association > -> we can have the compiler forward code generation to the object that describes the global > -> we can add a nice MOP API: #read and #write: (instead of #value and #value:) > -> Programmers can subclass the GlobalVariable and change #read and #write like they want (or override > the code gen methods) as in Slots. > > The only drawback is that you can not add an instance variables, I think, to checkâ¦ maybe it even works? > If not, there are ways around that e.g. using some fancy Slot that does not need an ivar but uses a weak dictionary > in a class variable, for example). > > Thus: it would be fairly easy to have the class vars be as flexible as the slotsâ¦ and then e.g. you will be able > to put breakpoints and watchers on class vars. You could even define globals with special behaviour the same > way as you do with Slots. > > Marcus > > >

July 4, 2014

Re: [Pharo-dev] Article Statistics

by Tudor Girba

+1 Dori On Fri, Jul 4, 2014 at 12:49 AM, Sebastian Sastre < sebastian(a)flowingconcept.com> wrote: > is a hit > > youâre making me feel proud of having shared that in reddit/programming :) > > thanks for sharing Sven, your work deserves that and more > > and congrats again for such a great work > > (that easily becomes a chapter of your book) > > > > > On Jul 3, 2014, at 7:45 AM, Sven Van Caekenberghe <sven(a)stfx.eu> wrote: > > Hi, > > I would like to share the statistics of the article that I published last > week > > Rediscovering the UX of the legendary HP-35 Scientific Pocket Calculator > > A tutorial on Pharo, test and specification based immersive programming > > > https://medium.com/@svenvc/rediscovering-the-ux-of-the-legendary-hp-35-scie… > > I have no good references to compare these statistics with, but I think > that the numbers are quite good for our community > > <Screen Shot 2014-07-03 at 10.47.34.png> > And these are the top referees > > <Screen Shot 2014-07-03 at 12.39.02.png> > > Thanks to everybody who shared the article around, who voted for it in > various places, who recommended it, tweeted it, who wrote nice comments. > > Thanks also to everybody in the community for making Pharo possible ! > > Sven > > > -- www.tudorgirba.com "Every thing has its own flow"

July 4, 2014

Re: [Pharo-dev] Article Statistics

by Sebastian Sastre

is a hit youâre making me feel proud of having shared that in reddit/programming :) thanks for sharing Sven, your work deserves that and more and congrats again for such a great work (that easily becomes a chapter of your book) On Jul 3, 2014, at 7:45 AM, Sven Van Caekenberghe <sven(a)stfx.eu> wrote: > Hi, > > I would like to share the statistics of the article that I published last week > > Rediscovering the UX of the legendary HP-35 Scientific Pocket Calculator > > A tutorial on Pharo, test and specification based immersive programming > > https://medium.com/@svenvc/rediscovering-the-ux-of-the-legendary-hp-35-scie… > > I have no good references to compare these statistics with, but I think that the numbers are quite good for our community > > <Screen Shot 2014-07-03 at 10.47.34.png> > And these are the top referees > > <Screen Shot 2014-07-03 at 12.39.02.png> > > Thanks to everybody who shared the article around, who voted for it in various places, who recommended it, tweeted it, who wrote nice comments. > > Thanks also to everybody in the community for making Pharo possible ! > > Sven

July 3, 2014