July 2015 - Pharo-users - lists.pharo.org

Re: [Pharo-users] Kivy

by Glenn CavarlÃ©

Kivy embed a Python interpreter in a native mobile app. All is developed in Python in association with their own declarative language : the kivy language. To do the same thing with Smalltalk, i think you have CogDroid or PharoDroid that embed a smalltalk vm in a native mobile app. When Bloc Widgets will be available, it should be easy to provide a "wonderful" mobile-specific widget layer. You can already do things like that with Bloc : <http://forum.world.st/file/n4835762/BwtMobile.png> (I'm using it as a simulator for mobile apps developed in Pharo) In another way, I'm working on a mobile development environment based on Pharo (part of my phd thesis). The goal is to use Pharo such as a modeling, development and validation environment in order to finally generate fully native mobile applications for several platforms. So, i hope that Pharo will become mobile soon ! ;) Regards, Glenn. ----- Glenn CavarlÃ© -- View this message in context: http://forum.world.st/Kivy-tp4835739p4835762.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

July 4, 2015

Re: [Pharo-users] an elegant way to return a result

by stepharo

Le 3/7/15 12:17, Peter UhnÃ¡k a Ã©crit : > > By the way, I've always used return statements in blocks to > "break" out of loops since i didn't find any "break" method in > Pharo. Is that bad too ? > > > It's still the same thing. Could you provide an example where you do > such a thing? When I started with Smalltalk I had also this habit of > forcing loops everywhere and breaking them, and only later I realized > that it is very often much better expressed as collections with > do:/select:/collect:/... yes but internally this is what they do > > Peter

July 4, 2015

Re: [Pharo-users] an elegant way to return a result

by stepharo

Le 3/7/15 11:53, Matthieu Lacaton a Ã©crit : > Well, thanks for the documentation, the first article was quite > interesting and I'm gonna get this book asap :) > > When you execute a block (far away from the place it was created), > it acts as an exception, it stops the execution of currently > executed methods and > return to its home context (method that led to the creation of the > block) Read deep into Pharo because this is a great chapter. > So people should avoid to put return statement into a block since > a block returns already the value of its last expression. > > > So for me > arg: [ ^ ... ] > > is a big warning. > > > Thanks for the explanation, I need to read this chapter, right :p > > By the way, I've always used return statements in blocks to "break" > out of loops since i didn't find any "break" method in Pharo. Is that > bad too ? no this correct. ifTrue: [^ self and other] is a natural pattern I tend to do ^ ,.,.,. ifTrue: ifFalse: instead of ,mm.,. ifTrue: ^ ifFalse: ^ because I prefer and in VW this is was creating easier to optimise blocks Now the wrong pattern is hhhh foo: [^ self] where foo: is not a defined control flow because here you really mean. I want to get back here. and this is different from hhhh foo: [ self ] > > 2015-07-03 10:11 GMT+02:00 Peter UhnÃ¡k <i.uhnak(a)gmail.com > <mailto:i.uhnak@gmail.com>>: > > by the way > > nextOrNextAfterNext := stream next ifNil: [stream next]. > > > I would argue that almost every person who would read this would > think it's a bug and it should be ifNotNil: > > Also there would be no point in saving it to a variable if you > will just return. > ^ stream next ifNil: [ stream next ] > >

July 4, 2015

Re: [Pharo-users] an elegant way to return a result

by stepharo

Le 3/7/15 09:09, jtuchel(a)objektfabrik.de a Ã©crit : > Stef, > > So we're finding more and more problems in just a single line of code ;-) > > Do you see advantages in this piece of code? Would it be friendlier to > the Compiler/VM or a programmer in your opinion? yes :) > > > |nextOrNextAfterNext| > > nextOrNextAfterNext := stream next ifNil: [stream next]. > ^nextOrNextAfterNext > > Joachim > > > > Am 02.07.15 um 23:23 schrieb stepharo: >> Hi matthieu >> >> on my side: >> >> stream next ifNil: [^stream next]. >> >> When you execute a block (far away from the place it was created), it >> acts as an exception, it stops the execution of currently executed >> methods and >> return to its home context (method that led to the creation of the >> block) Read deep into Pharo because this is a great chapter. >> So people should avoid to put return statement into a block since a >> block returns already the value of its last expression. >> >> So for me >> arg: [ ^ ... ] >> >> is a big warning. >> >> Stef >> >> >> >> Le 1/7/15 23:55, Matthieu Lacaton a Ã©crit : >>> >>> This whole conversation really makes me want to ask: How do you know >>> if some code is bad, good or completely ugly ? I've not been >>> programming for long but I've already heard sentences like this: >>> "Damn this piece of code is so bad !" so often that I am really >>> wondering. What are the rules ? Performant code makes total sense >>> but it seems there is something else. >>> >>> Le 1 juil. 2015 23:36, "stepharo" <stepharo(a)free.fr >>> <mailto:stepharo@free.fr>> a Ã©crit : >>> >>> I know :D >>> >>> Le 1/7/15 15:19, jtuchel(a)objektfabrik.de >>> <mailto:jtuchel@objektfabrik.de> a Ã©crit : >>> >>> Stef, >>> >>> you're shooting the wrong man! ;-) The crime was committed >>> in your team ;-)))) >>> >>> See you in Brescia >>> >>> Joachim >>> >>> Am 30.06.15 um 19:19 schrieb stepharo: >>> >>> >>> >>> Le 30/6/15 14:39, jtuchel(a)objektfabrik.de >>> <mailto:jtuchel@objektfabrik.de> a Ã©crit : >>> >>> Ah, Okay, you are mentioning the one and only one >>> case in which this could make sense.... ;-) >>> >>> Something like >>> >>> stream next ifNil: [^stream next]. >>> >>> >>> so ugly. >>> Please we should not teach how to do exception with >>> blocks :) >>> >>> >>> So there may be cases where the two sends do not >>> return the same result. But that is, of course, not >>> what the OP suggested. Nevertheless, I was too fast >>> in criticizing ;-) >>> >>> I would consider code like that "less easy" to >>> maintain, however. >>> >>> Nice thinking Kata ;-) >>> >>> Joachim >>> >>> >>> >>> Am 30.06.15 um 14:22 schrieb Esteban Lorenzano: >>> >>> ah yeah :) >>> >>> I assumed >>> >>> first "something aMsg" ~= second "something aMsgâ >>> >>> In case is the same, the correct way is as you say: >>> >>> ^ something aMsg ifNil: [ anotherResult ] >>> >>> (sorry, he :P) >>> >>> On 30 Jun 2015, at 13:43, >>> jtuchel(a)objektfabrik.de >>> <mailto:jtuchel@objektfabrik.de> wrote: >>> >>> Am 30.06.15 um 13:40 schrieb Peter UhnÃ¡k: >>> >>> Make sense if there's code in between. >>> >>> not sure what you're saying. I mean, sending >>> the message twice makes sense if you already >>> know the outcome? Hmmm... >>> >>> something aMsg ifNil:[ ^ something aMsg >>> ]. "yay for guards!" >>> "much more code" >>> ^ aNotherResult >>> >>> Peter >>> >>> >>> -- >>> ----------------------------------------------------------------------- >>> >>> Objektfabrik Joachim Tuchel >>> mailto:jtuchel@objektfabrik.de >>> <mailto:jtuchel@objektfabrik.de> >>> Fliederweg 1 http://www.objektfabrik.de >>> D-71640 Ludwigsburg >>> http://joachimtuchel.wordpress.com >>> Telefon: +49 7141 56 10 86 0 >>> <tel:%2B49%207141%2056%2010%2086%200> >>> Fax: +49 7141 56 10 86 1 >>> <tel:%2B49%207141%2056%2010%2086%201> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >> > > > -- > ----------------------------------------------------------------------- > Objektfabrik Joachim Tuchelmailto:jtuchel@objektfabrik.de > Fliederweg 1http://www.objektfabrik.de > D-71640 Ludwigsburghttp://joachimtuchel.wordpress.com > Telefon: +49 7141 56 10 86 0 Fax: +49 7141 56 10 86 1 >

July 4, 2015

Re: [Pharo-users] Kivy

by stepharo

For the information we are working on touch and OSWindow improvements. Alain is imporving Bloc the future graphic layer of Pharo, people from bern are working on new widgets. We are working on cleaning widgets. Now we also accept help. Stef Le 4/7/15 15:36, Hilaire a Ã©crit : > For the record, a friend told me about this > https://en.wikipedia.org/wiki/Kivy > > Will it be cool to have something like that? > > Hilaire >

July 4, 2015

Re: [Pharo-users] Kivy

by Hilaire

All. Without forgetting multiplateform. I mean when you have such a framework, people get attracted, although Kivy was likely developed the other way: developed for Python because Python is well know and widely used. I am curious to know how Kivy was developed in the first place: a small community effort, a corporation in house developed tool, funding... Hilaire Le 04/07/2015 15:49, Peter UhnÃ¡k a Ã©crit : > By "something like that" you mean what? More widgets? yaml-like DSL? > Touch? > > > Peter > > On Sat, Jul 4, 2015 at 3:36 PM, Hilaire > <hilaire(a)drgeo.eu <mailto:hilaire@drgeo.eu>> wrote: > > For the record, a friend told me about this > https://en.wikipedia.org/wiki/Kivy > > Will it be cool to have something like that? > > Hilaire > > -- > Dr. Geo > http://drgeo.eu > http://google.com/+DrgeoEu > > > > -- Dr. Geo http://drgeo.eu http://google.com/+DrgeoEu

July 4, 2015

Re: [Pharo-users] Kivy

by Peter UhnÃ¡k

By "something like that" you mean what? More widgets? yaml-like DSL? Touch? Peter On Sat, Jul 4, 2015 at 3:36 PM, Hilaire <hilaire(a)drgeo.eu> wrote: > For the record, a friend told me about this > https://en.wikipedia.org/wiki/Kivy > > Will it be cool to have something like that? > > Hilaire > > -- > Dr. Geo > http://drgeo.eu > http://google.com/+DrgeoEu > > > >

July 4, 2015

Kivy

by Hilaire

For the record, a friend told me about this https://en.wikipedia.org/wiki/Kivy Will it be cool to have something like that? Hilaire -- Dr. Geo http://drgeo.eu http://google.com/+DrgeoEu

July 4, 2015

Re: [Pharo-users] An Ubuntu-inspired theme for Pharo

by Marcus Denker

Nice! > On 03 Jul 2015, at 22:15, Merwan Ouddane <merwanouddane(a)gmail.com> wrote: > > Nice :) > > I have joined a screenshot > > On 03/07/2015 21:19, Esteban Lorenzano wrote: >> Pretty cool :) >> >> (Btw, I'm slowly working in a real theme manager... With remote themes so everybody will be able to contribute their themes without overbloath the image) >>

July 4, 2015

Re: [Pharo-users] An Ubuntu-inspired theme for Pharo

by stepharo

Thanks Glenn. this is quite nice :) Stef Le 3/7/15 20:47, Glenn CavarlÃ© a Ã©crit : > Hi all, > If anyone is interested, i made a small theme inspired by the Ubuntu > Ambiance theme : > http://smalltalkhub.com/#!/~GlennCavarle/PharoBuntuTheme > <http://smalltalkhub.com/#!/~GlennCavarle/PharoBuntuTheme> > > It is yet under development and if somebody is motivated to contribute, he > is welcome ! > (I don't have much time to refine it...) > > Regards, > Glenn. > > <http://forum.world.st/file/n4835632/PharoBuntuTheme.png> > > > > ----- > Glenn CavarlÃ© > -- > View this message in context: http://forum.world.st/An-Ubuntu-inspired-theme-for-Pharo-tp4835632.html > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > > >

July 4, 2015