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

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

by Alexandre Bergel

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

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

by K K Subbu

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

April 24, 2017

Re: [Pharo-users] Neural Networks in Pharo

by Oleks

Hello, Thanks a lot for your advice! It was very helpful and educating (for example, I thought that we store biases in the weight matrix and prepend 1 to input to make it faster, but now I see why it's actually slower that way). I've implemented a multi-layer neural network as a linked list of layers that propagate the input and error from one to another, similar to the Chain of Responsibility pattern. Also, now I represent biases as separate vectors. The LearningAlgorithm is a separate class with Backpropagation as its subclass (though at this point the network can only learn through backpropagation, but I'm planning to change that). I'm trying to figure out how the activation and cost functions should be connected. For example, cross-entropy works best with logistic sigmoid activation etc. I would like to give the user a freedom to use whatever he wants (plug in whatever you like and see what happens), but it can be very inefficient (because some time-consuming parts of activation and cost derivatives cancel out each other). Also, there is an interface for setting the learning rate for the whole network, which can be used to choose the learning rate prior to learning, as well as to change the learning rate after each iteration. I am planning to implement some optimization algorithms that would automize the process of choosing a learning rate (adagrad for example), but this would require a bit different design (maybe I will implement the Optimizer, as you suggested). I'm attaching two images with UML diagrams, describing my current implementation. Could you please tell me what you think about this design? The first image is a class diagram that shows the whole architecture, and the second one is a sequence diagram of backpropagation. mlnn.png <http://forum.world.st/file/n4943698/mlnn.png> backprop.png <http://forum.world.st/file/n4943698/backprop.png> Sincerely yours, Oleksandr -- View this message in context: http://forum.world.st/Neural-Networks-in-Pharo-tp4941271p4943698.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

April 23, 2017

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

by Thierry Goubier

Hi Juraj, a superb idea! A fluent interface to the Pharo sprint. Thierry Le 23/04/2017 Ã 17:13, Juraj Kubelka a Ã©crit : > Hi, > > We are happy to announce a new application called Pharo Sprint App. The > main idea of the application comes from the whiteboard that have been > used during Pharo Sprints and was also adopted in Chile. > > > 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. > > > *How does it work?* Participants choose a case from the âproposed' or > âallâ list. Once they are done, they move it to the âdoneâ list. We > believe that the application will encourage other people, especially > newcomers, to join us during the events and have a fun, together with > other developers. > > *How To Use It?* > â¢ Download the latest image from Bintray > <https://bintray.com/jurajkubelka/PharoSprint/build/_latestVersion#files> > â¢ Execute the image, using the corresponding VM for Pharo 6 > â¢ Run the application from World Menu / Communication / Pharo Sprint > â¢ Login, using your FogBugz account, wait a bit, then choose a case and > have a happy programming :-) > > Everybody participating in the sprints should use the Pharo Sprint image. > > The upcoming event is on Friday April > 28: https://association.pharo.org/event-2492488 > > The application is deployed in Pharo 6 (32 and 64bits). More details are > available at: https://github.com/JurajKubelka/PharoSprint > > I will appreciate any feedback. > > Have a fun! :-) > Juraj >

April 23, 2017

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

by Offray Vladimir Luna CÃ¡rdenas

Congrats Juraj. Pretty useful for the community. This idea of inside image tools talking with community channels is starting to take form. Cheers, Offray On 23/04/17 11:51, Juraj Kubelka wrote: > Yes, it is connected to FogBugz and it leaves message in FogBugz and > also in Discord: > > image1.PNG > > image2.PNG > > > Juraj > > -- > Juraj Kubelka > > El 23-04-2017, a las 13:32, Stephane Ducasse <stepharo.self(a)gmail.com > <mailto:stepharo.self@gmail.com>> escribiÃ³: > >> do you mark the cases that are taken by someone? >> >> >> >> On Sun, Apr 23, 2017 at 6:27 PM, Stephane Ducasse >> <stepharo.self(a)gmail.com <mailto:stepharo.self@gmail.com>> wrote: >> >> This is supercool :) >> Do you connect to fogbugz to grab the tasks? >> >> Stef >> >> On Sun, Apr 23, 2017 at 5:13 PM, Juraj Kubelka >> <juraj.kubelka(a)icloud.com <mailto:juraj.kubelka@icloud.com>> wrote: >> >> Hi, >> >> We are happy to announce a new application called Pharo >> Sprint App. The main idea of the application comes from the >> whiteboard that have been used during Pharo Sprints and was >> also adopted in Chile. >> >> >> 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. >> >> >> *How does it work?* Participants choose a case from the >> âproposed' or âallâ list. Once they are done, they move it to >> the âdoneâ list. We believe that the application will >> encourage other people, especially newcomers, to join us >> during the events and have a fun, together with other >> developers. >> >> *How To Use It?* >> â¢ Download the latest image from Bintray >> <https://bintray.com/jurajkubelka/PharoSprint/build/_latestVersion#files> >> â¢ Execute the image, using the corresponding VM for Pharo 6 >> â¢ Run the application from World Menu / Communication / Pharo >> Sprint >> â¢ Login, using your FogBugz account, wait a bit, then choose >> a case and have a happy programming :-) >> >> Everybody participating in the sprints should use the Pharo >> Sprint image. >> >> The upcoming event is on Friday April 28: >> https://association.pharo.org/event-2492488 >> <https://association.pharo.org/event-2492488> >> >> The application is deployed in Pharo 6 (32 and 64bits). More >> details are available at: >> https://github.com/JurajKubelka/PharoSprint >> <https://github.com/JurajKubelka/PharoSprint> >> >> I will appreciate any feedback. >> >> Have a fun! :-) >> Juraj >> >> >>

April 23, 2017

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

by Sven Van Caekenberghe

Impressive work indeed. I guess Marcus will be happy, you save him a lot of work being 'master of ceremony' at Sprints. > On 23 Apr 2017, at 19:24, Tudor Girba <tudor(a)tudorgirba.com> wrote: > > Great work, Juraj! > > Doru > > >> On Apr 23, 2017, at 5:13 PM, Juraj Kubelka <juraj.kubelka(a)icloud.com> wrote: >> >> Hi, >> >> We are happy to announce a new application called Pharo Sprint App. The main idea of the application comes from the whiteboard that have been used during Pharo Sprints and was also adopted in Chile. >> >> <Copia de whiteboard.jpeg> >> >> 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. >> >> <main-window.png> >> >> How does it work? Participants choose a case from the âproposed' or âallâ list. Once they are done, they move it to the âdoneâ list. We believe that the application will encourage other people, especially newcomers, to join us during the events and have a fun, together with other developers. >> >> How To Use It? >> â¢ Download the latest image from Bintray >> â¢ Execute the image, using the corresponding VM for Pharo 6 >> â¢ Run the application from World Menu / Communication / Pharo Sprint >> â¢ Login, using your FogBugz account, wait a bit, then choose a case and have a happy programming :-) >> >> Everybody participating in the sprints should use the Pharo Sprint image. >> >> The upcoming event is on Friday April 28: https://association.pharo.org/event-2492488 >> >> The application is deployed in Pharo 6 (32 and 64bits). More details are available at: https://github.com/JurajKubelka/PharoSprint >> >> I will appreciate any feedback. >> >> Have a fun! :-) >> Juraj >> > > -- > www.tudorgirba.com > www.feenk.com > > "We can create beautiful models in a vacuum. > But, to get them effective we have to deal with the inconvenience of reality." > >

April 23, 2017

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

by Ben Coman

On Sun, Apr 23, 2017 at 11:13 PM, Juraj Kubelka <juraj.kubelka(a)icloud.com> wrote: > Hi, > > We are happy to announce a new application called Pharo Sprint App. The > main idea of the application comes from the whiteboard that have been used > during Pharo Sprints and was also adopted in Chile. > > > 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. > > > *How does it work?* Participants choose a case from the âproposed' or > âallâ list. Once they are done, they move it to the âdoneâ list. We believe > that the application will encourage other people, especially newcomers, to > join us during the events and have a fun, together with other developers. > > *How To Use It?* > â¢ Download the latest image from Bintray > <https://bintray.com/jurajkubelka/PharoSprint/build/_latestVersion#files> > â¢ Execute the image, using the corresponding VM for Pharo 6 > â¢ Run the application from World Menu / Communication / Pharo Sprint > â¢ Login, using your FogBugz account, wait a bit, then choose a case and > have a happy programming :-) > > Everybody participating in the sprints should use the Pharo Sprint image. > > The upcoming event is on Friday April 28: https://association.pharo. > org/event-2492488 > > The application is deployed in Pharo 6 (32 and 64bits). More details are > available at: https://github.com/JurajKubelka/PharoSprint > > I will appreciate any feedback. > > Have a fun! :-) > Juraj > > Thanks Juraj. This is great. I saw your testing in the discord chat and was curious. This reminds me, one thing I've wanted to do for a long time is type an Issue number into PharoLauncher and have it download latest Image, get the issue title from Fogbugz to rename the Image, start the image with a script to open Inbox ready on the Issue. If I ever do get to it, mixing in your sprint app might be cool. cheers -ben

April 23, 2017

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

by Juraj Kubelka

Hi, > El 23-04-2017, a las 14:37, "phil(a)highoctane.be" <phil(a)highoctane.be> escribiÃ³: > > Please put that on the Pharo site (how to contribute section) so that we do not have to hunt this email down. You are right, put it on Pharo site is on my todo list. Juraj > > Phil > >> On Sun, Apr 23, 2017 at 7:24 PM, Tudor Girba <tudor(a)tudorgirba.com> wrote: >> Great work, Juraj! >> >> Doru >> >> >> > On Apr 23, 2017, at 5:13 PM, Juraj Kubelka <juraj.kubelka(a)icloud.com> wrote: >> > >> > Hi, >> > >> > We are happy to announce a new application called Pharo Sprint App. The main idea of the application comes from the whiteboard that have been used during Pharo Sprints and was also adopted in Chile. >> > >> > <Copia de whiteboard.jpeg> >> > >> > 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. >> > >> > <main-window.png> >> > >> > How does it work? Participants choose a case from the âproposed' or âallâ list. Once they are done, they move it to the âdoneâ list. We believe that the application will encourage other people, especially newcomers, to join us during the events and have a fun, together with other developers. >> > >> > How To Use It? >> > â¢ Download the latest image from Bintray >> > â¢ Execute the image, using the corresponding VM for Pharo 6 >> > â¢ Run the application from World Menu / Communication / Pharo Sprint >> > â¢ Login, using your FogBugz account, wait a bit, then choose a case and have a happy programming :-) >> > >> > Everybody participating in the sprints should use the Pharo Sprint image. >> > >> > The upcoming event is on Friday April 28: https://association.pharo.org/event-2492488 >> > >> > The application is deployed in Pharo 6 (32 and 64bits). More details are available at: https://github.com/JurajKubelka/PharoSprint >> > >> > I will appreciate any feedback. >> > >> > Have a fun! :-) >> > Juraj >> > >> >> -- >> www.tudorgirba.com >> www.feenk.com >> >> "We can create beautiful models in a vacuum. >> But, to get them effective we have to deal with the inconvenience of reality." >> >> >> >

April 23, 2017

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

by phil＠highoctane.be

Please put that on the Pharo site (how to contribute section) so that we do not have to hunt this email down. Phil On Sun, Apr 23, 2017 at 7:24 PM, Tudor Girba <tudor(a)tudorgirba.com> wrote: > Great work, Juraj! > > Doru > > > > On Apr 23, 2017, at 5:13 PM, Juraj Kubelka <juraj.kubelka(a)icloud.com> > wrote: > > > > Hi, > > > > We are happy to announce a new application called Pharo Sprint App. The > main idea of the application comes from the whiteboard that have been used > during Pharo Sprints and was also adopted in Chile. > > > > <Copia de whiteboard.jpeg> > > > > 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. > > > > <main-window.png> > > > > How does it work? Participants choose a case from the âproposed' or > âallâ list. Once they are done, they move it to the âdoneâ list. We believe > that the application will encourage other people, especially newcomers, to > join us during the events and have a fun, together with other developers. > > > > How To Use It? > > â¢ Download the latest image from Bintray > > â¢ Execute the image, using the corresponding VM for Pharo 6 > > â¢ Run the application from World Menu / Communication / Pharo > Sprint > > â¢ Login, using your FogBugz account, wait a bit, then choose a > case and have a happy programming :-) > > > > Everybody participating in the sprints should use the Pharo Sprint image. > > > > The upcoming event is on Friday April 28: https://association.pharo.org/ > event-2492488 > > > > The application is deployed in Pharo 6 (32 and 64bits). More details are > available at: https://github.com/JurajKubelka/PharoSprint > > > > I will appreciate any feedback. > > > > Have a fun! :-) > > Juraj > > > > -- > www.tudorgirba.com > www.feenk.com > > "We can create beautiful models in a vacuum. > But, to get them effective we have to deal with the inconvenience of > reality." > > > >

April 23, 2017

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

by Tudor Girba

Great work, Juraj! Doru > On Apr 23, 2017, at 5:13 PM, Juraj Kubelka <juraj.kubelka(a)icloud.com> wrote: > > Hi, > > We are happy to announce a new application called Pharo Sprint App. The main idea of the application comes from the whiteboard that have been used during Pharo Sprints and was also adopted in Chile. > > <Copia de whiteboard.jpeg> > > 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. > > <main-window.png> > > How does it work? Participants choose a case from the âproposed' or âallâ list. Once they are done, they move it to the âdoneâ list. We believe that the application will encourage other people, especially newcomers, to join us during the events and have a fun, together with other developers. > > How To Use It? > â¢ Download the latest image from Bintray > â¢ Execute the image, using the corresponding VM for Pharo 6 > â¢ Run the application from World Menu / Communication / Pharo Sprint > â¢ Login, using your FogBugz account, wait a bit, then choose a case and have a happy programming :-) > > Everybody participating in the sprints should use the Pharo Sprint image. > > The upcoming event is on Friday April 28: https://association.pharo.org/event-2492488 > > The application is deployed in Pharo 6 (32 and 64bits). More details are available at: https://github.com/JurajKubelka/PharoSprint > > I will appreciate any feedback. > > Have a fun! :-) > Juraj > -- www.tudorgirba.com www.feenk.com "We can create beautiful models in a vacuum. But, to get them effective we have to deal with the inconvenience of reality."

April 23, 2017

Re: [Pharo-users] Octal multiplication

by raffaello.giulietti＠lifeware.ch

On 23/04/17 15:13, nacho wrote: > Hello, > This could sound like a dumb question, it may be. > If I print: > 8r3 * 8r3 I get 9. > It seems that Pharo converts first to decimal and then performs the > multiplication. How do I get the result in octal which should be 8r11? > Thanks! > Hi Nacho There is no such thing as an "octal multiplication". Smalltalk has a notion of numerical literals, like 28, 10r28, 8r34 or 16r1C. They all represent the same number, namely the abstract notion of twenty-eight. But it not correct to say that Smalltalk first converts to decimal. The internal representation of an integer value in Smalltalk is, in fact, binary, but this should be mostly transparent to most usages. Smalltalk code does not care whether twenty-eight appears as octal or whatever in source code. Something similar holds in C, C++, Java, Lisp, Python, Haskell or any other of thousands of programming languages out there. If you are used to one of these, you should not be surprised by the behavior of Smalltalk. When a numerical result is printed, it is usually written as decimal number by default (in Smalltalk as well as in many other languages). As Peter points out, you must be explicit if you need a different representation. Greetings Raffaello

April 23, 2017

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

by Juraj Kubelka

Yes, it is connected to FogBugz and it leaves message in FogBugz and also in Discord: Juraj -- Juraj Kubelka > El 23-04-2017, a las 13:32, Stephane Ducasse <stepharo.self(a)gmail.com> escribiÃ³: > > do you mark the cases that are taken by someone? > > > >> On Sun, Apr 23, 2017 at 6:27 PM, Stephane Ducasse <stepharo.self(a)gmail.com> wrote: >> This is supercool :) >> Do you connect to fogbugz to grab the tasks? >> >> Stef >> >>> On Sun, Apr 23, 2017 at 5:13 PM, Juraj Kubelka <juraj.kubelka(a)icloud.com> wrote: >>> Hi, >>> >>> We are happy to announce a new application called Pharo Sprint App. The main idea of the application comes from the whiteboard that have been used during Pharo Sprints and was also adopted in Chile. >>> >>> >>> >>> 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. >>> >>> >>> >>> How does it work? Participants choose a case from the âproposed' or âallâ list. Once they are done, they move it to the âdoneâ list. We believe that the application will encourage other people, especially newcomers, to join us during the events and have a fun, together with other developers. >>> >>> How To Use It? >>> â¢ Download the latest image from Bintray >>> â¢ Execute the image, using the corresponding VM for Pharo 6 >>> â¢ Run the application from World Menu / Communication / Pharo Sprint >>> â¢ Login, using your FogBugz account, wait a bit, then choose a case and have a happy programming :-) >>> >>> Everybody participating in the sprints should use the Pharo Sprint image. >>> >>> The upcoming event is on Friday April 28: https://association.pharo.org/event-2492488 >>> >>> The application is deployed in Pharo 6 (32 and 64bits). More details are available at: https://github.com/JurajKubelka/PharoSprint >>> >>> I will appreciate any feedback. >>> >>> Have a fun! :-) >>> Juraj >>> >> >

April 23, 2017

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

by Stephane Ducasse

do you mark the cases that are taken by someone? On Sun, Apr 23, 2017 at 6:27 PM, Stephane Ducasse <stepharo.self(a)gmail.com> wrote: > This is supercool :) > Do you connect to fogbugz to grab the tasks? > > Stef > > On Sun, Apr 23, 2017 at 5:13 PM, Juraj Kubelka <juraj.kubelka(a)icloud.com> > wrote: > >> Hi, >> >> We are happy to announce a new application called Pharo Sprint App. The >> main idea of the application comes from the whiteboard that have been used >> during Pharo Sprints and was also adopted in Chile. >> >> >> 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. >> >> >> *How does it work?* Participants choose a case from the âproposed' or >> âallâ list. Once they are done, they move it to the âdoneâ list. We believe >> that the application will encourage other people, especially newcomers, to >> join us during the events and have a fun, together with other developers. >> >> *How To Use It?* >> â¢ Download the latest image from Bintray >> <https://bintray.com/jurajkubelka/PharoSprint/build/_latestVersion#files> >> â¢ Execute the image, using the corresponding VM for Pharo 6 >> â¢ Run the application from World Menu / Communication / Pharo Sprint >> â¢ Login, using your FogBugz account, wait a bit, then choose a case and >> have a happy programming :-) >> >> Everybody participating in the sprints should use the Pharo Sprint image. >> >> The upcoming event is on Friday April 28: https://association.pharo. >> org/event-2492488 >> >> The application is deployed in Pharo 6 (32 and 64bits). More details are >> available at: https://github.com/JurajKubelka/PharoSprint >> >> I will appreciate any feedback. >> >> Have a fun! :-) >> Juraj >> >> >

April 23, 2017

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

by Stephane Ducasse

This is supercool :) Do you connect to fogbugz to grab the tasks? Stef On Sun, Apr 23, 2017 at 5:13 PM, Juraj Kubelka <juraj.kubelka(a)icloud.com> wrote: > Hi, > > We are happy to announce a new application called Pharo Sprint App. The > main idea of the application comes from the whiteboard that have been used > during Pharo Sprints and was also adopted in Chile. > > > 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. > > > *How does it work?* Participants choose a case from the âproposed' or > âallâ list. Once they are done, they move it to the âdoneâ list. We believe > that the application will encourage other people, especially newcomers, to > join us during the events and have a fun, together with other developers. > > *How To Use It?* > â¢ Download the latest image from Bintray > <https://bintray.com/jurajkubelka/PharoSprint/build/_latestVersion#files> > â¢ Execute the image, using the corresponding VM for Pharo 6 > â¢ Run the application from World Menu / Communication / Pharo Sprint > â¢ Login, using your FogBugz account, wait a bit, then choose a case and > have a happy programming :-) > > Everybody participating in the sprints should use the Pharo Sprint image. > > The upcoming event is on Friday April 28: https://association.pharo. > org/event-2492488 > > The application is deployed in Pharo 6 (32 and 64bits). More details are > available at: https://github.com/JurajKubelka/PharoSprint > > I will appreciate any feedback. > > Have a fun! :-) > Juraj > >

April 23, 2017

Re: [Pharo-users] PostgreSQL and Pharo 6

by Dimitris Chloupis

You say its not an SSL problem and then you say I should not use SSL and it will work :D yes I know it would work without SSL but I want to use SSL. Hence my problem. SSL support is pretty standards nowdays anyway. On Sat, Apr 22, 2017 at 11:13 PM olivier auverlot < olivier.auverlot(a)gmail.com> wrote: > Hi Dimitris, > > It's not a SSL problem. Normaly, you can use PostgreSQL without SSL. The > error message says that you must add your client device in the pg_hba.conf > file. This file lists all the devices that are authorized to connect to the > PostgreSQL server. > > https://www.postgresql.org/docs/9.1/static/auth-pg-hba-conf.html > > At work, I use the postgreSQL V2 protocol without problem with Pharo but I > have not yet tested with Pharo 6. With Garage, it's a cool solution to > build database applications. > > Best regards > Olivier :) > > 2017-04-18 9:07 GMT+02:00 Dimitris Chloupis <kilon.alios(a)gmail.com>: > >> I adjusted it for my database and gives me error >> >> EFATAL: no pg_hba.conf entry for host "", user "", database "", SSL off >> >> any way to resolved this ? >> >> On Tue, Apr 18, 2017 at 1:24 AM Benoit St-Jean <bstjean(a)yahoo.com> wrote: >> >>> Try this: >>> >>> | sql conn connectionSpec result | >>> sql := 'SELECT * FROM search_terms'. >>> conn := GAConnection new. >>> connectionSpec := GAConnectionArgs >>> hostname: 'localhost' >>> portno: 5432 >>> databaseName: 'sodbxtest' >>> userName: 'sodbxtest' >>> password: 'sodbxtest'. >>> conn connectionArgs: connectionSpec. >>> >>> "Connect to the server" >>> result := conn startup. >>> (result errorResponse isKindOf: GAErrorResponse) ifTrue: [ self halt ]. >>> >>> "Execute your SQL stuff" >>> result := conn execute: sql. >>> (result errorResponse isKindOf: GAErrorResponse) ifTrue: [ self halt ] >>> ifFalse: [result inspect]. >>> >>> "Disconnect from the server" >>> conn close. >>> >>> >>> ----------------- >>> BenoÃ®t St-Jean >>> Yahoo! Messenger: bstjean >>> Twitter: @BenLeChialeux >>> Pinterest: benoitstjean >>> Instagram: Chef_Benito >>> IRC: lamneth >>> Blogue: endormitoire.wordpress.com >>> "A standpoint is an intellectual horizon of radius zero". (A. Einstein) >>> >>> >>> ------------------------------ >>> *From:* Dimitris Chloupis <kilon.alios(a)gmail.com> >>> *To:* Benoit St-Jean <bstjean(a)yahoo.com>; Any question about pharo is >>> welcome <pharo-users(a)lists.pharo.org> >>> *Sent:* Monday, April 17, 2017 5:24 PM >>> >>> *Subject:* Re: [Pharo-users] PostgreSQL and Pharo 6 >>> >>> Following the instructions here >>> >>> http://guillep.github.io/DBXTalk/garage/installation.html >>> >>> I did >>> >>> Gofer it >>> smalltalkhubUser: 'DBXTalk' project: 'Garage'; >>> configurationOf: 'Garage'; >>> load. >>> >>> >>> (ConfigurationOfGarage project version: '0.5') >>> load: 'postgresV2'. >>> >>> And it did install >>> >>> >>> On Tue, 18 Apr 2017 at 00:02, Benoit St-Jean <bstjean(a)yahoo.com> wrote: >>> >>> Tell me which exact package you loaded (or even better, the exact to >>> load it) and I will test some code against my PostgreSQL server... >>> >>> >>> ----------------- >>> BenoÃ®t St-Jean >>> Yahoo! Messenger: bstjean >>> Twitter: @BenLeChialeux >>> Pinterest: benoitstjean >>> Instagram: Chef_Benito >>> IRC: lamneth >>> Blogue: endormitoire.wordpress.com >>> "A standpoint is an intellectual horizon of radius zero". (A. Einstein) >>> >>> >>> ------------------------------ >>> *From:* Dimitris Chloupis <kilon.alios(a)gmail.com> >>> *To:* Benoit St-Jean <bstjean(a)yahoo.com>; Any question about pharo is >>> welcome <pharo-users(a)lists.pharo.org> >>> *Sent:* Monday, April 17, 2017 4:55 PM >>> >>> *Subject:* Re: [Pharo-users] PostgreSQL and Pharo 6 >>> >>> no conn connect does not work because GAConnection has no such method. >>> #connect exist in GAPostgresDrive but even if I go that route I get >>> error #OptionAt:IfAbsent: was sent to nil . With this code >>> >>> conn2 := GAPostgresDriver new . >>> conn2 host: 'ec2-**-***-***-185.eu-west-1.compute.amazonaws.com' >>> port: '****' >>> database:'*******' >>> user: '*****' >>> password:''***'. >>> conn2 connect. >>> >>> Is there sample code that connects to online databases ? >>> >>> >>> >>> On Mon, Apr 17, 2017 at 11:18 PM Benoit St-Jean <bstjean(a)yahoo.com> >>> wrote: >>> >>> You have to #connect before executing SQL statements! >>> >>> Something like (in your code): >>> >>> conn connect. >>> >>> ----------------- >>> BenoÃ®t St-Jean >>> Yahoo! Messenger: bstjean >>> Twitter: @BenLeChialeux >>> Pinterest: benoitstjean >>> Instagram: Chef_Benito >>> IRC: lamneth >>> Blogue: endormitoire.wordpress.com >>> "A standpoint is an intellectual horizon of radius zero". (A. Einstein) >>> >>> >>> ------------------------------ >>> *From:* Dimitris Chloupis <kilon.alios(a)gmail.com> >>> *To:* Benoit St-Jean <bstjean(a)yahoo.com>; Any question about pharo is >>> welcome <pharo-users(a)lists.pharo.org> >>> *Sent:* Monday, April 17, 2017 3:54 PM >>> *Subject:* Re: [Pharo-users] PostgreSQL and Pharo 6 >>> >>> Installing from Catalog Browser fails >>> >>> I installed it via the the website instructions, it installs fine >>> >>> But if I use it this way >>> >>> conn := GAConnection new. >>> ca := GAConnectionArgs hostname: 'ec2-**-***-***- >>> 185.eu-west-1.compute.amazonaws.com' >>> portno: '****' >>> databaseName:'*******' >>> userName: '*****' >>> password:''***'. >>> conn connectionArgs: ca. >>> conn execute: 'select * from search_terms'. >>> >>> it fails with no connection, is there anything else i need to do ? >>> is there a guide for how to use this ? >>> >>> >>> >>> On Mon, Apr 17, 2017 at 7:30 PM Dimitris Chloupis <kilon.alios(a)gmail.com> >>> wrote: >>> >>> thank you Benoit >>> >>> On Mon, Apr 17, 2017 at 4:23 AM Benoit St-Jean via Pharo-users < >>> pharo-users(a)lists.pharo.org> wrote: >>> >>> ODBC worked fine as well if you don't need native driver access >>> >>> ----------------- >>> BenoÃ®t St-Jean >>> Yahoo! Messenger: bstjean >>> Twitter: @BenLeChialeux >>> Pinterest: benoitstjean >>> Instagram: Chef_Benito >>> IRC: lamneth >>> Blogue: endormitoire.wordpress.com >>> "A standpoint is an intellectual horizon of radius zero". (A. Einstein) >>> >>> >>> ------------------------------ >>> *From:* Dimitris Chloupis <kilon.alios(a)gmail.com> >>> *To:* Any question about pharo is welcome <pharo-users(a)lists.pharo.org> >>> *Sent:* Sunday, April 16, 2017 4:37 AM >>> *Subject:* [Pharo-users] PostgreSQL and Pharo 6 >>> >>> Hey guys , I play with PostgreSQL and I really like it, sorry Esteban :D >>> >>> I am using Python for it but I would like to give access also to Pharo >>> to my database. I was informed that Garage has a driver for PostgreSQL , is >>> there any other candidate ? Any advice ? >>> >>> >>> >>> >>> >>> >>> >>> >>> >

April 23, 2017

[Ann] Pharo Sprint App to improve coordination during Pharo Sprints

by Juraj Kubelka

Hi, We are happy to announce a new application called Pharo Sprint App. The main idea of the application comes from the whiteboard that have been used during Pharo Sprints and was also adopted in Chile. 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. How does it work? Participants choose a case from the âproposed' or âallâ list. Once they are done, they move it to the âdoneâ list. We believe that the application will encourage other people, especially newcomers, to join us during the events and have a fun, together with other developers. How To Use It? â¢ Download the latest image from Bintray <https://bintray.com/jurajkubelka/PharoSprint/build/_latestVersion#files> â¢ Execute the image, using the corresponding VM for Pharo 6 â¢ Run the application from World Menu / Communication / Pharo Sprint â¢ Login, using your FogBugz account, wait a bit, then choose a case and have a happy programming :-) Everybody participating in the sprints should use the Pharo Sprint image. The upcoming event is on Friday April 28: https://association.pharo.org/event-2492488 <https://association.pharo.org/event-2492488> The application is deployed in Pharo 6 (32 and 64bits). More details are available at: https://github.com/JurajKubelka/PharoSprint <https://github.com/JurajKubelka/PharoSprint> I will appreciate any feedback. Have a fun! :-) Juraj

April 23, 2017

Re: [Pharo-users] Octal multiplication

by Peter Uhnak

On Sun, Apr 23, 2017 at 06:13:42AM -0700, nacho wrote: > Hello, > This could sound like a dumb question, it may be. > If I print: > 8r3 * 8r3 I get 9. > It seems that Pharo converts first to decimal and then performs the > multiplication. How do I get the result in octal which should be 8r11? #printStringRadix: base (8r3 * 8r3) printStringRadix: 8 "-> 8r11" for hex there's also #hex 12 hex "-> 16rC" Peter > Thanks! > > > > > ----- > Nacho > Smalltalker apprentice. > Buenos Aires, Argentina. > -- > View this message in context: http://forum.world.st/Octal-multiplication-tp4943364.html > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >

April 23, 2017

Octal multiplication

by nacho

Hello, This could sound like a dumb question, it may be. If I print: 8r3 * 8r3 I get 9. It seems that Pharo converts first to decimal and then performs the multiplication. How do I get the result in octal which should be 8r11? Thanks! ----- Nacho Smalltalker apprentice. Buenos Aires, Argentina. -- View this message in context: http://forum.world.st/Octal-multiplication-tp4943364.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

April 23, 2017

Re: [Pharo-users] PostgreSQL and Pharo 6

by olivier auverlot

Hi Dimitris, It's not a SSL problem. Normaly, you can use PostgreSQL without SSL. The error message says that you must add your client device in the pg_hba.conf file. This file lists all the devices that are authorized to connect to the PostgreSQL server. https://www.postgresql.org/docs/9.1/static/auth-pg-hba-conf.html At work, I use the postgreSQL V2 protocol without problem with Pharo but I have not yet tested with Pharo 6. With Garage, it's a cool solution to build database applications. Best regards Olivier :) 2017-04-18 9:07 GMT+02:00 Dimitris Chloupis <kilon.alios(a)gmail.com>: > I adjusted it for my database and gives me error > > EFATAL: no pg_hba.conf entry for host "", user "", database "", SSL off > > any way to resolved this ? > > On Tue, Apr 18, 2017 at 1:24 AM Benoit St-Jean <bstjean(a)yahoo.com> wrote: > >> Try this: >> >> | sql conn connectionSpec result | >> sql := 'SELECT * FROM search_terms'. >> conn := GAConnection new. >> connectionSpec := GAConnectionArgs >> hostname: 'localhost' >> portno: 5432 >> databaseName: 'sodbxtest' >> userName: 'sodbxtest' >> password: 'sodbxtest'. >> conn connectionArgs: connectionSpec. >> >> "Connect to the server" >> result := conn startup. >> (result errorResponse isKindOf: GAErrorResponse) ifTrue: [ self halt ]. >> >> "Execute your SQL stuff" >> result := conn execute: sql. >> (result errorResponse isKindOf: GAErrorResponse) ifTrue: [ self halt ] >> ifFalse: [result inspect]. >> >> "Disconnect from the server" >> conn close. >> >> >> ----------------- >> BenoÃ®t St-Jean >> Yahoo! Messenger: bstjean >> Twitter: @BenLeChialeux >> Pinterest: benoitstjean >> Instagram: Chef_Benito >> IRC: lamneth >> Blogue: endormitoire.wordpress.com >> "A standpoint is an intellectual horizon of radius zero". (A. Einstein) >> >> >> ------------------------------ >> *From:* Dimitris Chloupis <kilon.alios(a)gmail.com> >> *To:* Benoit St-Jean <bstjean(a)yahoo.com>; Any question about pharo is >> welcome <pharo-users(a)lists.pharo.org> >> *Sent:* Monday, April 17, 2017 5:24 PM >> >> *Subject:* Re: [Pharo-users] PostgreSQL and Pharo 6 >> >> Following the instructions here >> >> http://guillep.github.io/DBXTalk/garage/installation.html >> >> I did >> >> Gofer it >> smalltalkhubUser: 'DBXTalk' project: 'Garage'; >> configurationOf: 'Garage'; >> load. >> >> >> (ConfigurationOfGarage project version: '0.5') >> load: 'postgresV2'. >> >> And it did install >> >> >> On Tue, 18 Apr 2017 at 00:02, Benoit St-Jean <bstjean(a)yahoo.com> wrote: >> >> Tell me which exact package you loaded (or even better, the exact to load >> it) and I will test some code against my PostgreSQL server... >> >> >> ----------------- >> BenoÃ®t St-Jean >> Yahoo! Messenger: bstjean >> Twitter: @BenLeChialeux >> Pinterest: benoitstjean >> Instagram: Chef_Benito >> IRC: lamneth >> Blogue: endormitoire.wordpress.com >> "A standpoint is an intellectual horizon of radius zero". (A. Einstein) >> >> >> ------------------------------ >> *From:* Dimitris Chloupis <kilon.alios(a)gmail.com> >> *To:* Benoit St-Jean <bstjean(a)yahoo.com>; Any question about pharo is >> welcome <pharo-users(a)lists.pharo.org> >> *Sent:* Monday, April 17, 2017 4:55 PM >> >> *Subject:* Re: [Pharo-users] PostgreSQL and Pharo 6 >> >> no conn connect does not work because GAConnection has no such method. >> #connect exist in GAPostgresDrive but even if I go that route I get error >> #OptionAt:IfAbsent: was sent to nil . With this code >> >> conn2 := GAPostgresDriver new . >> conn2 host: 'ec2-**-***-***-185.eu-west-1.compute.amazonaws.com' >> port: '****' >> database:'*******' >> user: '*****' >> password:''***'. >> conn2 connect. >> >> Is there sample code that connects to online databases ? >> >> >> >> On Mon, Apr 17, 2017 at 11:18 PM Benoit St-Jean <bstjean(a)yahoo.com> >> wrote: >> >> You have to #connect before executing SQL statements! >> >> Something like (in your code): >> >> conn connect. >> >> ----------------- >> BenoÃ®t St-Jean >> Yahoo! Messenger: bstjean >> Twitter: @BenLeChialeux >> Pinterest: benoitstjean >> Instagram: Chef_Benito >> IRC: lamneth >> Blogue: endormitoire.wordpress.com >> "A standpoint is an intellectual horizon of radius zero". (A. Einstein) >> >> >> ------------------------------ >> *From:* Dimitris Chloupis <kilon.alios(a)gmail.com> >> *To:* Benoit St-Jean <bstjean(a)yahoo.com>; Any question about pharo is >> welcome <pharo-users(a)lists.pharo.org> >> *Sent:* Monday, April 17, 2017 3:54 PM >> *Subject:* Re: [Pharo-users] PostgreSQL and Pharo 6 >> >> Installing from Catalog Browser fails >> >> I installed it via the the website instructions, it installs fine >> >> But if I use it this way >> >> conn := GAConnection new. >> ca := GAConnectionArgs hostname: 'ec2-**-***-***-185.eu-west-1. >> compute.amazonaws.com' >> portno: '****' >> databaseName:'*******' >> userName: '*****' >> password:''***'. >> conn connectionArgs: ca. >> conn execute: 'select * from search_terms'. >> >> it fails with no connection, is there anything else i need to do ? >> is there a guide for how to use this ? >> >> >> >> On Mon, Apr 17, 2017 at 7:30 PM Dimitris Chloupis <kilon.alios(a)gmail.com> >> wrote: >> >> thank you Benoit >> >> On Mon, Apr 17, 2017 at 4:23 AM Benoit St-Jean via Pharo-users < >> pharo-users(a)lists.pharo.org> wrote: >> >> ODBC worked fine as well if you don't need native driver access >> >> ----------------- >> BenoÃ®t St-Jean >> Yahoo! Messenger: bstjean >> Twitter: @BenLeChialeux >> Pinterest: benoitstjean >> Instagram: Chef_Benito >> IRC: lamneth >> Blogue: endormitoire.wordpress.com >> "A standpoint is an intellectual horizon of radius zero". (A. Einstein) >> >> >> ------------------------------ >> *From:* Dimitris Chloupis <kilon.alios(a)gmail.com> >> *To:* Any question about pharo is welcome <pharo-users(a)lists.pharo.org> >> *Sent:* Sunday, April 16, 2017 4:37 AM >> *Subject:* [Pharo-users] PostgreSQL and Pharo 6 >> >> Hey guys , I play with PostgreSQL and I really like it, sorry Esteban :D >> >> I am using Python for it but I would like to give access also to Pharo to >> my database. I was informed that Garage has a driver for PostgreSQL , is >> there any other candidate ? Any advice ? >> >> >> >> >> >> >> >> >>

April 22, 2017

Re: [Pharo-users] [ANN] Prometheas : a Pharo wiki database

by Dimitris Chloupis

On Fri, Apr 21, 2017 at 5:12 PM Offray Vladimir Luna CÃ¡rdenas < offray.luna(a)mutabit.com> wrote: > Chat channels seem like good places to build that database. I find them > distracting I try to be on them for short focused periods of time. But > I'll try to remember to ask questions to the lighthouse bot and see if I > can add new definitions. > > Cheers, > > Offray > Actually I meant giving me the description here is fine too. Just a few lines that I can then add to the bot myself, you do not need to be in Discord or use the bot. I just need content so I wont have to search every definition. "Nice effort! The key has to be one word term? For example I would like to add !docadd Pharo Sprint âand the explanation of what it is and how someone can participate.â sure, I can add only !docadd Sprint. Thanks!" its possible if you pass it as string so your example wont work but this will !docadd "Pharo Sprint" âand the explanation of what it is and how someone can participate.â currently the only way to match is by !doc "pharo sprint" but I like idea so I will fix it to no longer search multiple terms and instead search one that may be multiple words separated by space so expect in a couple of hours that this will work too !doc pharo sprint I plan also to add regex type search so you wont have to worry about exact match but I have to think this through because I want to avoid returning multiple results in order not to flood the channels.

April 21, 2017

Re: [Pharo-users] [ANN] Prometheas : a Pharo wiki database

by Juraj Kubelka

Nice effort! The key has to be one word term? For example I would like to add !docadd Pharo Sprint âand the explanation of what it is and how someone can participate.â sure, I can add only !docadd Sprint. Thanks! Juraj > El 21-04-2017, a las 07:24, Dimitris Chloupis <kilon.alios(a)gmail.com> escribiÃ³: > > > Hey guys I need your help with building the database, I am sure many of you can share small definitions > > the syntax is quite simple > !docadd term "Term is a term and this is its content of definition .More info can be found at http://www.term.com <http://www.term.com/>" > > for example > > !docadd Nireas "Nireas is a customised blue theme that comes with a gui that allows to change most colors in the theme. More info can be found at https://github.com/kilon/Nireas <https://github.com/kilon/Nireas>" > > the case on the term does not matter all terms are converted to lower case for ease of use. > > The definition must not be longer than 5 lines. > > I plan also to add a section for script examples but I have not added that feature yet, so avoid using quotation marks , single or double inside your definition , only regular character and full stops and parentheses. > > So if you feel like helping, it easy, fast and it will benefit beginners because I plan to add this database inside Pharo. My plan was to add it to playground but I decided to add it to GTSPotter which makes more sense. > > Thanks for any help on advance.

April 21, 2017

Re: [Pharo-users] [ANN] Prometheas : a Pharo wiki database

by Offray Vladimir Luna CÃ¡rdenas

Chat channels seem like good places to build that database. I find them distracting I try to be on them for short focused periods of time. But I'll try to remember to ask questions to the lighthouse bot and see if I can add new definitions. Cheers, Offray On 21/04/17 05:24, Dimitris Chloupis wrote: > > Hey guys I need your help with building the database, I am sure many > of you can share small definitions > > the syntax is quite simple > !docadd term "Term is a term and this is its content of definition > .More info can be found at http://www.term.com" > > for example > > !docadd Nireas "Nireas is a customised blue theme that comes with a > gui that allows to change most colors in the theme. More info can be > found at https://github.com/kilon/Nireas" > > the case on the term does not matter all terms are converted to lower > case for ease of use. > > The definition must not be longer than 5 lines. > > I plan also to add a section for script examples but I have not added > that feature yet, so avoid using quotation marks , single or double > inside your definition , only regular character and full stops and > parentheses. > > So if you feel like helping, it easy, fast and it will benefit > beginners because I plan to add this database inside Pharo. My plan > was to add it to playground but I decided to add it to GTSPotter which > makes more sense. > > Thanks for any help on advance.

April 21, 2017

Re: [Pharo-users] example in FFI manual not worked

by Yuriy Babah

Thank Ben. 2017-04-20 12:49 GMT+04:00 Ben Coman <btc(a)openinworld.com>: > Okay that helps a lot. You've done two things wrong. > > 1. You actually did.... > ExternalStructure subclass: #MyStructure > not > FFIExternalStructure subclass: #MyStructure > > This is what caused the error, since if you compare > the class-side methods (by clicking the <Class> button) > of ExternalStructure and FFIExternalStructure > you'll see only the latter has method #rebuildFieldAccessors. > > > 2. You didn't click the <Class> button before adding method #fieldsDesc. > This would trip you up after you fix the above. > "MyStructure rebuildFieldAccessors" would no longer produce an error > but *nothing* would happen when you evaluate it. > When you add #fieldsDesc to the class-side, switch back to the > instance-side > to observe what happens when you evaluate "MyStructure > rebuildFieldAccessors". > > You'll know you are looking at the class-side when you see the class's > class-side definition > MyStructure class > instanceVariableNames: '' > > rather than the class's instance-side definition... > FFIExternalStructure subclass: #MyStructure > instanceVariableNames: '' > classVariableNames: '' > package: 'FFIDemo' > > Pay attention that the documentation says > MyStructure class>>#fieldsDesc > rather than > MyStructure>>#fieldsDesc > > The former is a method on the class-side > and the latter is a method on the instance-side. > > A weak analogy is that you can think of class-side methods > as the methods of MyStructure factory that produces the the Mystructure > objects. > > Actually I can see how "MyStructure class>>#fieldsDesc" can be > ambiguous to newcomers. > Your mind has not yet been conditioned to catch on that detail and and > glosses over it unconsciously thinking "yes, I know MyStructure is a > class. I'm adding a method to it". > This is something that often catches newcomers. I remember getting > caught on it myself. > > Makes me wonder if documentation instead using "MyStructure > classside>>#fieldsDesc" > is more intention revealing, and making the browser button match this > as <Class Side> > would make working with instance/class-side more obvious to newcomers. > > cheers -ben > > On Thu, Apr 20, 2017 at 1:52 PM, Yuriy Babah <babah.yuriy06(a)gmail.com> > wrote: > > > > I have recorded screencast abaut this my operations with Pharo. > > > > https://drive.google.com/open?id=0B_0p5J9SNPlBOHduQlIxdHI0bk0 > > > > But sometimes I'm moved forvard to operations: > > > > MyStructure rebuildFieldAccessors. -> DoIt -> Ok > > > > myStruct := MyStructure externalNew. -> DoIt -> Ok > > > > myStruct := id: 42. -> MessageDoesUnderstood. > > > > I'm doesn't understand in which cases i got to this moment. > > > > I'm associete that with that what i have a several copy's Pharo. > > And somebody affect to other. > > > > 2017-04-19 18:46 GMT+04:00 Ben Coman <btc(a)openinworld.com>: > >> > >> Hi Yuriy, > >> > >> Hope I can help. I tried your example in build 60463 and its works > fine. So lets break it down. > >> > >> On Wed, Apr 19, 2017 at 8:46 PM, Yuriy Babah <babah.yuriy06(a)gmail.com> > wrote: > >>> > >>> Hello everyone, > >>> > >>> I'm new to Pharo and have tried do example with structure in Unified > FFI manual. > >>> > >>> FFIExternalStructure subclass: #MyStructure > >>> instanceVariableNames: '' > >>> classVariableNames: '' > >>> package: 'FFIDemo' > >> > >> > >> You opened a System Browser and entered and accepted the above first on > its own, > >> such that the new package & class were added and the new class selected. > >> > >> Then you clicked on the <Class> button, such that the "no messages" > text in the third pane changed from > >> normal font to bold font. Then clicked on "no messages" to display the > method template.... > >> messageSelectorAndArgumentNames > >> "comment stating purpose of message" > >> | temporary variable names | > >> statements > >> > >> And replaced that text with the text below from "fieldsDesc" onwards, > >> the Accepted that. > >> > >>> > >>> MyStructure class>>#fieldsDesc > >>> ^ #( > >>> uint8 id; > >>> char * struct_name; > >>> uint name_length; > >>> ) > >>> > >> > >> Then separately you evaluated(doIt) the following... > >> > >>> > >>> MyStructure rebuildFieldAccessors > >> > >> > >> > >>> > >>> . -> DoIt -> MessageNotUnderstood > >>> > >>> What's i do wrong? > >> > >> > >> Does a debug window appear? What is the exact text of the title bar, > >> which details which message is not understood by which class. > >> This provides an important hint to what is wrong. > >> > >> Further help might need a live chat. I'll be in discord for a couple of > hours, but ask anyone there... > >> https://discord.gg/KCKQSSt > >> > >> cheers -ben > >> > >>> I do it in > >>> Pharo5 and 6, widows and os x. > >>> Sorry for my english, it's not my native language. > >>> > >> > >> Your english is not too bad :) > >> > >> cheers -ben > > > > > >

April 21, 2017

Re: [Pharo-users] [ANN] Prometheas : a Pharo wiki database

by Dimitris Chloupis

Hey guys I need your help with building the database, I am sure many of you can share small definitions the syntax is quite simple !docadd term "Term is a term and this is its content of definition .More info can be found at http://www.term.com" for example !docadd Nireas "Nireas is a customised blue theme that comes with a gui that allows to change most colors in the theme. More info can be found at https://github.com/kilon/Nireas" the case on the term does not matter all terms are converted to lower case for ease of use. The definition must not be longer than 5 lines. I plan also to add a section for script examples but I have not added that feature yet, so avoid using quotation marks , single or double inside your definition , only regular character and full stops and parentheses. So if you feel like helping, it easy, fast and it will benefit beginners because I plan to add this database inside Pharo. My plan was to add it to playground but I decided to add it to GTSPotter which makes more sense. Thanks for any help on advance.

April 21, 2017

Re: [Pharo-users] example in FFI manual not worked

by Ben Coman

Okay that helps a lot. You've done two things wrong. 1. You actually did.... ExternalStructure subclass: #MyStructure not FFIExternalStructure subclass: #MyStructure This is what caused the error, since if you compare the class-side methods (by clicking the <Class> button) of ExternalStructure and FFIExternalStructure you'll see only the latter has method #rebuildFieldAccessors. 2. You didn't click the <Class> button before adding method #fieldsDesc. This would trip you up after you fix the above. "MyStructure rebuildFieldAccessors" would no longer produce an error but *nothing* would happen when you evaluate it. When you add #fieldsDesc to the class-side, switch back to the instance-side to observe what happens when you evaluate "MyStructure rebuildFieldAccessors". You'll know you are looking at the class-side when you see the class's class-side definition MyStructure class instanceVariableNames: '' rather than the class's instance-side definition... FFIExternalStructure subclass: #MyStructure instanceVariableNames: '' classVariableNames: '' package: 'FFIDemo' Pay attention that the documentation says MyStructure class>>#fieldsDesc rather than MyStructure>>#fieldsDesc The former is a method on the class-side and the latter is a method on the instance-side. A weak analogy is that you can think of class-side methods as the methods of MyStructure factory that produces the the Mystructure objects. Actually I can see how "MyStructure class>>#fieldsDesc" can be ambiguous to newcomers. Your mind has not yet been conditioned to catch on that detail and and glosses over it unconsciously thinking "yes, I know MyStructure is a class. I'm adding a method to it". This is something that often catches newcomers. I remember getting caught on it myself. Makes me wonder if documentation instead using "MyStructure classside>>#fieldsDesc" is more intention revealing, and making the browser button match this as <Class Side> would make working with instance/class-side more obvious to newcomers. cheers -ben On Thu, Apr 20, 2017 at 1:52 PM, Yuriy Babah <babah.yuriy06(a)gmail.com> wrote: > > I have recorded screencast abaut this my operations with Pharo. > > https://drive.google.com/open?id=0B_0p5J9SNPlBOHduQlIxdHI0bk0 > > But sometimes I'm moved forvard to operations: > > MyStructure rebuildFieldAccessors. -> DoIt -> Ok > > myStruct := MyStructure externalNew. -> DoIt -> Ok > > myStruct := id: 42. -> MessageDoesUnderstood. > > I'm doesn't understand in which cases i got to this moment. > > I'm associete that with that what i have a several copy's Pharo. > And somebody affect to other. > > 2017-04-19 18:46 GMT+04:00 Ben Coman <btc(a)openinworld.com>: >> >> Hi Yuriy, >> >> Hope I can help. I tried your example in build 60463 and its works fine. So lets break it down. >> >> On Wed, Apr 19, 2017 at 8:46 PM, Yuriy Babah <babah.yuriy06(a)gmail.com> wrote: >>> >>> Hello everyone, >>> >>> I'm new to Pharo and have tried do example with structure in Unified FFI manual. >>> >>> FFIExternalStructure subclass: #MyStructure >>> instanceVariableNames: '' >>> classVariableNames: '' >>> package: 'FFIDemo' >> >> >> You opened a System Browser and entered and accepted the above first on its own, >> such that the new package & class were added and the new class selected. >> >> Then you clicked on the <Class> button, such that the "no messages" text in the third pane changed from >> normal font to bold font. Then clicked on "no messages" to display the method template.... >> messageSelectorAndArgumentNames >> "comment stating purpose of message" >> | temporary variable names | >> statements >> >> And replaced that text with the text below from "fieldsDesc" onwards, >> the Accepted that. >> >>> >>> MyStructure class>>#fieldsDesc >>> ^ #( >>> uint8 id; >>> char * struct_name; >>> uint name_length; >>> ) >>> >> >> Then separately you evaluated(doIt) the following... >> >>> >>> MyStructure rebuildFieldAccessors >> >> >> >>> >>> . -> DoIt -> MessageNotUnderstood >>> >>> What's i do wrong? >> >> >> Does a debug window appear? What is the exact text of the title bar, >> which details which message is not understood by which class. >> This provides an important hint to what is wrong. >> >> Further help might need a live chat. I'll be in discord for a couple of hours, but ask anyone there... >> https://discord.gg/KCKQSSt >> >> cheers -ben >> >>> I do it in >>> Pharo5 and 6, widows and os x. >>> Sorry for my english, it's not my native language. >>> >> >> Your english is not too bad :) >> >> cheers -ben > >

April 20, 2017