- Pharo-users - lists.pharo.org

Re: [Pharo-users] Why single inheritance?

by Laura Risani

Thank you all for your insights, they were very educational to me. On Thu, Jan 29, 2015 at 5:49 AM, Ben Coman <btc(a)openinworld.com> wrote: > http://www.visoracle.com/squeak/faq/traits-vs.html > > On Wed, Jan 28, 2015 at 11:41 PM, Laura Risani <laura.risani(a)gmail.com> > wrote: > >> Hi all, >> >> What is the explanation why Smalltalk designers preferred single >> inheritance+traits to multiple inheritance? Why is the former better than >> the latter? >> Do traits let you share state also or only behavior? >> >> Best, >> Laura >> > >

Jan. 30, 2015

students looking for projects?

by Martin BÃ¤hr

Excerpts from Sven Van Caekenberghe's message of 2015-01-29 22:57:57 +0100: > There are some students here in Lille that were looking for a cool project, > and this is one of the two subjects that I suggested to them. you have students looking for projects? there are a bunch of smalltalk related projects on labs.fossasia.org that i am mentoring. not sure if they count as cool though... greetings, martin. -- eKita - the online platform for your entire academic life -- chief engineer eKita.co pike programmer pike.lysator.liu.se caudium.net societyserver.org secretary beijinglug.org mentor fossasia.org foresight developer foresightlinux.org realss.com unix sysadmin Martin BÃ¤hr working in china http://societyserver.org/mbaehr/

Jan. 30, 2015

Re: [Pharo-users] Implementing text navigation shortcuts

by Laura Risani

Hi Nicolai, Thank for your answer, it was excellent! It is nice to know that the editing functions are MVC way separated. :) On Thu, Jan 29, 2015 at 8:48 PM, Nicolai Hess <nicolaihess(a)web.de> wrote: > > 2015-01-29 23:06 GMT+01:00 Laura Risani <laura.risani(a)gmail.com>: > >> Hi all, >> >> I like to implement a keyboard shortcut for, while editing any text, move >> the text pointer to the next position after $: . >> >> Seems that the base of all text editing is the class >> #TextMorphForEditView. I see there there is an instance variable for the >> text. My problem is i can not find a method that tells/sets the current >> position in the text of the text pointer. >> >> I've tried going through the list of methods of #TextMorphForEditView and >> its superclasses. Also through the one of senders of #arrowRight trying to >> find the instantiation of #KMKeyCombination needed to implement the >> existing shortcut "ctrl + right arrow" which jumps to the next position >> after an space, but i found nothing. >> >> Best, >> Laura >> > > Hello Laura, > > not all editing functions are actually in the TextMorph > (TextMorphForEditView ...) classes or the Text class, instead they > delegated this to an editor > class (Editor/SimpleEditor/SmalltalkEditor...). > And - yes that is bad - not all keyboard shortcuts go through > KMKeyCombination and KMKeymap. > The SmalltalkEditor class defines its own shortcut handler. > For exampe: cmd+shift+a -> #argAdvance: > This method searches for the next $: followed by a space and place the > caret after the space. > > nicolai > >

Jan. 30, 2015

Re: [Pharo-users] Autoformatting extisting packages

by Paul DeBruicker

If you want to reformat all the methods in a class/package/image, I don't know how to be helpful. If you never want to see unformatted code in a browse follow the instructions I sent you in response to your question about tools. Using the "pretty print" and "format on accept" settings will ensure that the code you see is always formatted to your specifications in the Settings browser using the RBConfigurableFormatter. Hope this helps Paul laura wrote > Hi all, > > How do i apply autoformatting to existing packages? I've read somewhere > that this functionality used to be at the refactoring menu, but i can't > find it, don't know if it has been renamed or moved. > > Best, > Laura -- View this message in context: http://forum.world.st/Autoformatting-extisting-packages-tp4802539p4802561.h… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Jan. 30, 2015

Re: [Pharo-users] Code completion differences at browser and workspace

by Nicolai Hess

2015-01-29 22:06 GMT+01:00 Laura Risani <laura.risani(a)gmail.com>: > Hi all, > > I've noticed that the code completition tool shows a different list if > brought up at a workspace or at a system browser. Particulary workspace's > completition list is broader than browser's one. > > For instance if while writting a method i have already accepted other > method names but haven't yet defined them in any class, these selectors are > shown in worskpace's completition but don't in browser's. So while at the > system browser i have to waste keystrokes bringing up the manually the > other completition tool and search in that list the selector i want. > > So, question : how do i make the completition tool show at system browser > the same list that it would show at a workspace? > > Best, > Laura > There is one difference between the Workspace and the SystemBrowser. In the SystemBrowers, the one method that you are editing belongs to one (known) class and if you start typing "self" the code completion can guess which methods of that class (or superclasses) can be called. In the Workspace you don't have this (class-) context. But the code completion is smart enough to guess the actual type in some situations, for example in a Workspace: |m| m:= new Morph. m handleKey at this point, the code completion context knows, that "m" is a Morph and therefore only shows the methods from the class Morph, starting with "handleKey". This completion menu should be the same, as if you start with self handleKey in the SystemBrowser, while editing a method of the class Morph. nicolai

Jan. 30, 2015

Re: [Pharo-users] Implementing text navigation shortcuts

by Nicolai Hess

2015-01-29 23:06 GMT+01:00 Laura Risani <laura.risani(a)gmail.com>: > Hi all, > > I like to implement a keyboard shortcut for, while editing any text, move > the text pointer to the next position after $: . > > Seems that the base of all text editing is the class > #TextMorphForEditView. I see there there is an instance variable for the > text. My problem is i can not find a method that tells/sets the current > position in the text of the text pointer. > > I've tried going through the list of methods of #TextMorphForEditView and > its superclasses. Also through the one of senders of #arrowRight trying to > find the instantiation of #KMKeyCombination needed to implement the > existing shortcut "ctrl + right arrow" which jumps to the next position > after an space, but i found nothing. > > Best, > Laura > Hello Laura, not all editing functions are actually in the TextMorph (TextMorphForEditView ...) classes or the Text class, instead they delegated this to an editor class (Editor/SimpleEditor/SmalltalkEditor...). And - yes that is bad - not all keyboard shortcuts go through KMKeyCombination and KMKeymap. The SmalltalkEditor class defines its own shortcut handler. For exampe: cmd+shift+a -> #argAdvance: This method searches for the next $: followed by a space and place the caret after the space. nicolai

Jan. 29, 2015

Re: [Pharo-users] HTTP Token Based authentication server?

by Esteban A. Maringolo

2015-01-29 18:57 GMT-03:00 Sven Van Caekenberghe <sven(a)stfx.eu>: > > > On 28 Jan 2015, at 14:29, Esteban A. Maringolo <emaringolo(a)gmail.com> > wrote: > > > > Is it there any implementation for token based authentication over HTTP? > > > > I know there is a OAuth client, but do we have an OAuth server? > > There are some students here in Lille that were looking for a cool > project, and this is one of the two subjects that I suggested to them. > > > I'm migrating the authentication of our mobile apps from standard HTTP > digest (user/pass base64 encoded) to token based auth, and could find very > useful to have something already done to use or to build on top of. > I could use/test this! By know I'm simply generating a token using to lookup a valid session. Regards! Esteban A. Maringolo

Jan. 29, 2015

Implementing text navigation shortcuts

by Laura Risani

Hi all, I like to implement a keyboard shortcut for, while editing any text, move the text pointer to the next position after $: . Seems that the base of all text editing is the class #TextMorphForEditView. I see there there is an instance variable for the text. My problem is i can not find a method that tells/sets the current position in the text of the text pointer. I've tried going through the list of methods of #TextMorphForEditView and its superclasses. Also through the one of senders of #arrowRight trying to find the instantiation of #KMKeyCombination needed to implement the existing shortcut "ctrl + right arrow" which jumps to the next position after an space, but i found nothing. Best, Laura

Jan. 29, 2015

Re: [Pharo-users] HTTP Token Based authentication server?

by Sven Van Caekenberghe

> On 28 Jan 2015, at 14:29, Esteban A. Maringolo <emaringolo(a)gmail.com> wrote: > > Is it there any implementation for token based authentication over HTTP? > > I know there is a OAuth client, but do we have an OAuth server? There are some students here in Lille that were looking for a cool project, and this is one of the two subjects that I suggested to them. > I'm migrating the authentication of our mobile apps from standard HTTP digest (user/pass base64 encoded) to token based auth, and could find very useful to have something already done to use or to build on top of. > > Regards! > > Esteban A. Maringolo

Jan. 29, 2015

Re: [Pharo-users] [Pharo-dev] [ANN] PUnQLite NoSQL database project updated

by Tudor Girba

Hi Torsten, This sounds very interesting. I tried to play with it on Mac, but I got a bit stuck. Here is what I did: - I downloaded the UnQLite sources from: http://unqlite.org/db/unqlite-db-20130825-116.zip - In that folder I did: gcc -m32 -c unqlite.c gcc -m32 -dynamiclib -o unqlite.dylib unqlite.o - I then copied the unqlite.dylib file in the plugins folder: Pharo.app/Contents/MacOS/Plugins - I started a Pharo 4 image with the corresponding VM - I loaded the stable version of PUnQLite from the ConfigurationBrowser - I executed without errors the code you mentioned: |db| db := PqDatabase open: 'comments.db'. db disableAutoCommit. db transact: [ Object subclasses do: [:cls | | key | key := cls asString. db at: key put: cls comment ] ]. db close. ==> However I do not get a comments.db file/folder, and the Database Browser does not show anything. Am I doing something wrong? Cheers, Doru On Thu, Jan 29, 2015 at 9:20 AM, Torsten Bergmann <astares(a)gmx.de> wrote: > Hi, > > are you in need for really simple out of image persistency? > > If you like to use a small RDBMS solution with Pharo then there is the > embeddable SQLite > shared library and NBSQLite3 project [1] to access it. Combine it with > Glorp [2] and you do > not have to fight too much with SQL. > > On the other end of persistency world there are the so called "NoSQL > databases" and beside > Mongo and all the others that require special setup etc. there is this > wonderful small UnQLite > embeddable database [3] that similar to SQlite world only requires a > simple library. > > Thanks to Masashi Umezawa there is a nice wrapper for Pharo already to > access this > tiny embeddable NoSQL database called "PUnQLite" [4] and [5], also > including access to > the Jx9 machinery of UnQLite. It is really cool that he made this > available. > > This week I updated "PUnQLite" a little bit: > - refactored the Native boost wrapper for UnQLite (using shared pools, > ...) > - documented classes > - added a help topic > - fixed a bug in cursors when accessing the keys in an empty database > - and finally added a small spec based tool to work with a database > file (see attached screenshot) > One can use it to open an unqlite database, show the key value pairs > and remove or add entries. > > If you are in latest Pharo 4 already you can load all of that right from > the config browser. Be aware > that you need the external unqlite shared library which is downloaded and > extracted into a folder > "pharo-vm" when loading the config. > > For instance on Windows it automagically downloads a file > "pharo-vm/unqlite.dll" below your > image directory and you just have to copy this shared library file to the > folder where your > VM (Pharo.exe) resides. Havent tried on other OS platforms. > > From the Pharo side using the UnQLite database basically works like having > some kind > "external dictionary" in a database file. Just run that in a workspace: > > |db| > db := PqDatabase open: 'comments.db'. > db disableAutoCommit. > db transact: [ > Object subclasses do: [:cls | | key | > key := cls asString. > db at: key put: cls comment ] > ]. > db close. > > Then open the "Database Browser" from the world menu and open the > "comments.db" file. > You can browse the keys and values, remove entries or add new. A filter > for the keys > is also included. Nothing fancy but hope you like it or find it usable. > > Couldnt make it to PharoConf 2015 but I hope all participants enjoy their > time there. > Keep the others updated by using the #pharodays2015 on Twitter. Have fun! > > Bye > T. > > > [1] > http://lists.pharo.org/pipermail/pharo-dev_lists.pharo.org/2015-January/104… > [2] > http://lists.pharo.org/pipermail/pharo-users_lists.pharo.org/2015-January/0… > [3] http://unqlite.org/ > [4] https://github.com/mumez/PunQLite > [5] http://smalltalkhub.com/#!/~MasashiUmezawa/PunQLite -- www.tudorgirba.com "Every thing has its own flow"

Jan. 29, 2015