April 2017 - Pharo-users - lists.pharo.org

Re: [Pharo-users] Gathering statistics on messages sent to an object

by Denis Kudriashov

Hi Alistair. Do you know that you are able to count any message send? (not only external). For this you need prevent meta recursion. Now inside message processing you do: aMessage sendTo: anObject which produces another intercepting message #perform:withArguments which repeats original message send. Fortunately Ghost handles such kind of meta recursion and there is no infinite loop here: any self-sends are ignored in such cases. If you want intercept any message try following code: ExternalSendTrace>>send: aMessage to: anObject | method | announcer announce: (ExternalSendAnnouncement message: aMessage trace: self). method := anObject class lookupSelector: aMessage selector. ^GHMetaMessages executeWith: anObject andArguments: aMessage arguments method: method In that case we lookup and execute method by using mirror primitive which not sends any message to object. For example: rect := 10@30 corner: 100@300. trace := ExternalSendStats logStatsFor: rect. rect area. trace stats. "a Dictionary(#area->1 #height->1 #width->1 )" Best regards, Denis 2017-04-24 14:43 GMT+02:00 Alistair Grant <akgrant0710(a)gmail.com>: > If you subscribe to pharo-dev you will have seen that I've been looking > at the primitives used in DiskStore. > > As part of that investigation I wanted to get an idea of which messages > are typically sent to DiskStore and how often. > > Denis Kudriashov provided a neat package that implements a "halt on > next object call". I've been wanting to play with the package for a > while and decided this was a good opportunity. > > I've extended that package to keep count of how many times messages are > sent to a target object, e.g.: > > > > | point trace | > > point := 2@3. > trace := ExternalSendStats logStatsFor: point. > point > x; > y; > angle; > x. > trace stats. > "a Dictionary( > #angle->1 > #x->2 > #y->1 )" > > > > The package is probably too simplistic, and there's bound to be other > ways to do this, but it met my immediate needs and gave me a chance to > try out the Ghost package. I'll extend it if and when I need to. > > Many thanks to Denis for making the Ghost package available, and > hopefully this is useful for someone, or at least triggers some new > ideas. > > Denis' original article is at: http://dionisiydk.blogspot.cz/ > 2016/04/halt-next-object-call.html > > The extensions can be installed with: > > Metacello new > baseline: 'AkgGhost'; > repository: 'github://akgrant43/akg-ghost:master/mc'; > load > > > > Cheers, > Alistair > >

April 24, 2017

Re: [Pharo-users] PMMatrix vs Matrix

by Stephane Ducasse

yes we should! On Mon, Apr 24, 2017 at 2:15 PM, Serge Stinckwich < serge.stinckwich(a)gmail.com> wrote: > Yes this what I was going to answer as well. Matrix in Pharo does not > implement the usual mathematical operators like PMMatrix. > Maybe should be rename as Array2D in order to avoid confusion in the > future. > > Regards, > > On Mon, Apr 24, 2017 at 1:54 PM, Stephane Ducasse > <stepharo.self(a)gmail.com> wrote: > > the matrix class is not really a matrix more a 2dArray > > no eigen values and the rest > > > > stef > > > > On Mon, Apr 24, 2017 at 12:04 PM, frankl1_miky < > mike1corporation(a)gmail.com> > > wrote: > >> > >> Hi, > >> Polymath come with PMMatrix class . what is the difference between > this > >> class and the native Matrix class. > >> > >> > >> > >> -- > >> View this message in context: > >> http://forum.world.st/PMMatrix-vs-Matrix-tp4943819.html > >> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > >> > > > > > > -- > Serge Stinckwich > UCN & UMI UMMISCO 209 (IRD/UPMC) > Every DSL ends up being Smalltalk > http://www.doesnotunderstand.org/ > >

April 24, 2017

Pharodays early rate deadline

by Stephane Ducasse

Hi the deadline to register to pharodays is approaching. After 29 of April you will pay more and we will not secure room for the diner. Please register Stef

April 24, 2017

Gathering statistics on messages sent to an object

by Alistair Grant

If you subscribe to pharo-dev you will have seen that I've been looking at the primitives used in DiskStore. As part of that investigation I wanted to get an idea of which messages are typically sent to DiskStore and how often. Denis Kudriashov provided a neat package that implements a "halt on next object call". I've been wanting to play with the package for a while and decided this was a good opportunity. I've extended that package to keep count of how many times messages are sent to a target object, e.g.: | point trace | point := 2@3. trace := ExternalSendStats logStatsFor: point. point x; y; angle; x. trace stats. "a Dictionary( #angle->1 #x->2 #y->1 )" The package is probably too simplistic, and there's bound to be other ways to do this, but it met my immediate needs and gave me a chance to try out the Ghost package. I'll extend it if and when I need to. Many thanks to Denis for making the Ghost package available, and hopefully this is useful for someone, or at least triggers some new ideas. Denis' original article is at: http://dionisiydk.blogspot.cz/2016/04/halt-next-object-call.html The extensions can be installed with: Metacello new baseline: 'AkgGhost'; repository: 'github://akgrant43/akg-ghost:master/mc'; load Cheers, Alistair

April 24, 2017

Re: [Pharo-users] PMMatrix vs Matrix

by Serge Stinckwich

Yes this what I was going to answer as well. Matrix in Pharo does not implement the usual mathematical operators like PMMatrix. Maybe should be rename as Array2D in order to avoid confusion in the future. Regards, On Mon, Apr 24, 2017 at 1:54 PM, Stephane Ducasse <stepharo.self(a)gmail.com> wrote: > the matrix class is not really a matrix more a 2dArray > no eigen values and the rest > > stef > > On Mon, Apr 24, 2017 at 12:04 PM, frankl1_miky <mike1corporation(a)gmail.com> > wrote: >> >> Hi, >> Polymath come with PMMatrix class . what is the difference between this >> class and the native Matrix class. >> >> >> >> -- >> View this message in context: >> http://forum.world.st/PMMatrix-vs-Matrix-tp4943819.html >> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >> > -- Serge Stinckwich UCN & UMI UMMISCO 209 (IRD/UPMC) Every DSL ends up being Smalltalk http://www.doesnotunderstand.org/

April 24, 2017

Re: [Pharo-users] PMMatrix vs Matrix

by Stephane Ducasse

the matrix class is not really a matrix more a 2dArray no eigen values and the rest stef On Mon, Apr 24, 2017 at 12:04 PM, frankl1_miky <mike1corporation(a)gmail.com> wrote: > Hi, > Polymath come with PMMatrix class . what is the difference between this > class and the native Matrix class. > > > > -- > View this message in context: http://forum.world.st/ > PMMatrix-vs-Matrix-tp4943819.html > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > >

April 24, 2017

Re: [Pharo-users] [Ann] Pharo Sprint App to improve coordination during Pharo Sprints

by Alexandre Bergel

Oh! Juraj, wasnât it supposed to be packaged in the last version? Alexandre > On Apr 24, 2017, at 10:29 AM, Esteban Lorenzano <estebanlm(a)gmail.com> wrote: > > Hi, > >> On 24 Apr 2017, at 09:04, Alexandre Bergel <alexandre.bergel(a)me.com> wrote: >> >> Hi! >> >> One very important aspect of Jurajâs work, is that _participants at a sprint should use the sprint tool_. It comes with the latest Pharo image (i.e. what has to be used in a sprint). > > no it doesnât :) > (and it wont, at least this version) > > but yes, everybody should use it ;) > > >> >> So, letâs use it on Friday! > > +1 > > Esteban > >> >> Cheers, >> Alexandre >> >> >>> On Apr 24, 2017, at 8:05 AM, K K Subbu <kksubbu.ml(a)gmail.com> wrote: >>> >>> On Sunday 23 April 2017 08:43 PM, Juraj Kubelka wrote: >>> >>>> As the Pharo Sprint is organized in several places around the world, we >>>> miss the connection with other guys. For that reason we decided to move >>>> the physical whiteboard to the internet and developed Pharo Sprint App. >>> >>> Excellent idea and a very useful tool! It took me just a few minutes to download it and post my first fix through it. >>> >>> What would be workflow for using this app? Is this only for Pharo Sprint participants or can others also use it? >>> >>> I faced a minor problem in the UI. The top half of login/password text input fields got clipped by title bar, when I opened it up first. Later the Update/Logout buttons also have their top border clipped off. >>> >>> Regards .. Subbu >>> >> >> -- >> _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: >> Alexandre Bergel http://www.bergel.eu >> ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. >> >> >> >> > > -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

April 24, 2017

PMMatrix vs Matrix

by frankl1_miky

Hi, Polymath come with PMMatrix class . what is the difference between this class and the native Matrix class. -- View this message in context: http://forum.world.st/PMMatrix-vs-Matrix-tp4943819.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

April 24, 2017

Re: [Pharo-users] [Ann] Pharo Sprint App to improve coordination during Pharo Sprints

by Esteban Lorenzano

Hi, > On 24 Apr 2017, at 09:04, Alexandre Bergel <alexandre.bergel(a)me.com> wrote: > > Hi! > > One very important aspect of Jurajâs work, is that _participants at a sprint should use the sprint tool_. It comes with the latest Pharo image (i.e. what has to be used in a sprint). no it doesnât :) (and it wont, at least this version) but yes, everybody should use it ;) > > So, letâs use it on Friday! +1 Esteban > > Cheers, > Alexandre > > >> On Apr 24, 2017, at 8:05 AM, K K Subbu <kksubbu.ml(a)gmail.com> wrote: >> >> On Sunday 23 April 2017 08:43 PM, Juraj Kubelka wrote: >> >>> As the Pharo Sprint is organized in several places around the world, we >>> miss the connection with other guys. For that reason we decided to move >>> the physical whiteboard to the internet and developed Pharo Sprint App. >> >> Excellent idea and a very useful tool! It took me just a few minutes to download it and post my first fix through it. >> >> What would be workflow for using this app? Is this only for Pharo Sprint participants or can others also use it? >> >> I faced a minor problem in the UI. The top half of login/password text input fields got clipped by title bar, when I opened it up first. Later the Update/Logout buttons also have their top border clipped off. >> >> Regards .. Subbu >> > > -- > _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: > Alexandre Bergel http://www.bergel.eu > ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. > > > >

April 24, 2017

Re: [Pharo-users] [Ann] Pharo Sprint App to improve coordination during Pharo Sprints

by Guillermo Polito

Nice :) Thanx Juraj On Mon, Apr 24, 2017 at 9:04 AM, Alexandre Bergel <alexandre.bergel(a)me.com> wrote: > Hi! > > One very important aspect of Jurajâs work, is that _participants at a > sprint should use the sprint tool_. It comes with the latest Pharo image > (i.e. what has to be used in a sprint). > > So, letâs use it on Friday! > > Cheers, > Alexandre > > > > On Apr 24, 2017, at 8:05 AM, K K Subbu <kksubbu.ml(a)gmail.com> wrote: > > > > On Sunday 23 April 2017 08:43 PM, Juraj Kubelka wrote: > > > >> As the Pharo Sprint is organized in several places around the world, we > >> miss the connection with other guys. For that reason we decided to move > >> the physical whiteboard to the internet and developed Pharo Sprint App. > > > > Excellent idea and a very useful tool! It took me just a few minutes to > download it and post my first fix through it. > > > > What would be workflow for using this app? Is this only for Pharo Sprint > participants or can others also use it? > > > > I faced a minor problem in the UI. The top half of login/password text > input fields got clipped by title bar, when I opened it up first. Later the > Update/Logout buttons also have their top border clipped off. > > > > Regards .. Subbu > > > > -- > _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: > Alexandre Bergel http://www.bergel.eu > ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. > > > > >

April 24, 2017