July 2010 - Pharo-users - lists.pharo.org

Re: [Pharo-users] Couple of newbie questions

by Mariano Martinez Peck

Grrrr I know you were going to bother with that ;) I couldn't scape jahahaha ok...here it is: http://book.pharo-project.org/book/FAQ/ BUT I HATE MY STYLE. I cannot put a nice CSS or display of the page. If someone can help me, please....it is ugly. In addition, I didn't add it to http://www.pharo-project.org/documentation/faq because I think they are different kinds of FAQ. what do you think? I still hope someone has time to migrate the techincal stufff from SCG to the new book. It would be awesome. http://scg.unibe.ch/wiki/faq/pharo Cheers Mariano On Sat, Jul 31, 2010 at 6:35 PM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr > wrote: > mariano > > we should turn that into an FAQ and add it to the collabactive book? > > Stef > > On Jul 24, 2010, at 8:09 PM, Mariano Martinez Peck wrote: > > > > > > > On Sat, Jul 24, 2010 at 2:29 PM, Thomas Worthington < > thomas(a)2worthingtons.net> wrote: > > Hi everyone, > > > > > > Hi and welcome! > > > > Two questions: > > > > 1) How do I get my Pharo 1.0 to "upgrade" to the 1.1 image? > > > > > > The system update is disabled in purpose. The Pharo image cannot be > updated anymore. Only PharoCore images can be updated. So..what you have to > do is to just download a Pharo 1.1 image :) > > > > If you are curious why updates were disable, read: > http://forum.world.st/update-1-1-11371-tp2229126p2231195.html > > > > Just FYI the latest 1.1 release is here: > https://gforge.inria.fr/frs/download.php/27254/Pharo-1.1-11409-rc4dev10.07.… > > > > as you can see in http://www.pharo-project.org/pharo-download > > > > 2) How do I make a "one-click" image that will start my app when clicked? > > > > > > Very easy. Two options: > > > > - Take your new image (both .image and .changes), put exactly the same > file names, and override the original files that can be found in > /Contents/Resources . I think they are named Pharo-1.0.image and > Pharo-1.0.changes > > > > - This option is the proper one. It depends on the OS you are using. If > you are in Linux, just edit the Pharo.sh file so that it points to your new > image (where it says "$RES/Pharo-1.0.image"). If you are in Windows, edit > the Pharo.ini file where it says > "ImageFile=Contents\Resources\Pharo-1.0.image". > > > > Sorry if these are FAQs, but I couldn't find answers via Google. > > > > > > We should add it to FAQ or book. > > > > Where you aware of http://book.pharo-project.org/ and > http://pharobyexample.org/ ? > > > > Cheers > > > > Mariano > > > > TW > > > > _______________________________________________ > > Pharo-users mailing list > > Pharo-users(a)lists.gforge.inria.fr > > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users > > > > _______________________________________________ > > Pharo-users mailing list > > Pharo-users(a)lists.gforge.inria.fr > > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users > > > _______________________________________________ > Pharo-users mailing list > Pharo-users(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users >

July 31, 2010

Re: [Pharo-users] Disabling Fractions ?

by Stanislav Paskalev

Purely for display. I'm doing a very basic accounting app that does not need full accuracy, but saying that the client should pay (X/Y) amount of cash .. that will be a problem :) In the end, I might as well keep fractions for the model itself, and just add asFloat on the view wherever required. On Sat, Jul 31, 2010 at 10:41 PM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: > >> That's the way I'm doing it now, but it's redundant to put asFloat at >> the end of each division. There *should* be a more elegant way, at >> least I hope so :) > > why? > I do not like to manipulate float when I can have exact math operations. > So I put asFloat exactly when I know I want to leave the math world to end up in the computer science world. > > Why do you need float and not fraction? > You crunch matrix resolution with large numbers? > > Stef > > > _______________________________________________ > Pharo-users mailing list > Pharo-users(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users >

July 31, 2010

Re: [Pharo-users] Disabling Fractions ?

by StÃ©phane Ducasse

> That's the way I'm doing it now, but it's redundant to put asFloat at > the end of each division. There *should* be a more elegant way, at > least I hope so :) why? I do not like to manipulate float when I can have exact math operations. So I put asFloat exactly when I know I want to leave the math world to end up in the computer science world. Why do you need float and not fraction? You crunch matrix resolution with large numbers? Stef

July 31, 2010

Re: [Pharo-users] Disabling Fractions ?

by Stanislav Paskalev

That's the way I'm doing it now, but it's redundant to put asFloat at the end of each division. There *should* be a more elegant way, at least I hope so :) Stanislav Paskalev On Sat, Jul 31, 2010 at 10:32 PM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: > asFloat? > > > Stef > > On Jul 31, 2010, at 8:33 AM, Stanislav Paskalev wrote: > >> Hi, >> What is the best way to disable fractions or automatically convert >> them into say floats ? >> >> Stanislav Paskalev >> >> _______________________________________________ >> Pharo-users mailing list >> Pharo-users(a)lists.gforge.inria.fr >> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users > > > _______________________________________________ > Pharo-users mailing list > Pharo-users(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users >

July 31, 2010

Re: [Pharo-users] Disabling Fractions ?

by StÃ©phane Ducasse

asFloat? Stef On Jul 31, 2010, at 8:33 AM, Stanislav Paskalev wrote: > Hi, > What is the best way to disable fractions or automatically convert > them into say floats ? > > Stanislav Paskalev > > _______________________________________________ > Pharo-users mailing list > Pharo-users(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users

July 31, 2010

Re: [Pharo-users] RecentMessageList

by Benjamin Van Ryseghem

> Ok...I did it. A few remarks: > > 1) RecentMessageList >> initialize > > you do > > SmalltalkImage current addToStartUpList: self class. > > but should be SmalltalkImage addToStartUpList: self class. >just Smalltalk addToStartUpList: self class. Thank you, it's done ^^ > > > (at least in Pharo 1.1) > > 2) What is the idea of the Recent Messages? To see the recent MODIFIED methods ? isn't it? If true, maybe would be good to > 2.1) directly show the diff with the previous version I do not know how to do that, I'll search :) > 2.2) Have a button to see the versions of that method Good idea, but it means having the RecentMessageList already running ^^ > > 3) Once you press any button, like collapse all or similar, they become blue and neve grey again I have not this bug :( The collapse and expend button are disabled when the list is empty. The buttons browse and remove are enabled only when an item is selectioned. > > 4) When is the list of recen messages clean ? how do you know the recen messages? you store that information somewhere? when is that cleaned? The list is empty when you just have initialize the RecentMessageList (ie the first time you launch it) but you can reset the list by sending : RecentMessageList resetUniqueInstance Otherwise it's never automatically cleaned (but you can remove each node you want) I know the recent messages by registering the class in the SystemChangeNotifier, and they are stored in the RecentMessageList uniqueInstance messageList > > > Thank you very much and continue with the good work! Maybe once we can include it by defult in Pharo. > yes this is the point. Thank you both for your advice

July 31, 2010

Re: [Pharo-users] OMeta package for pharo?

by StÃ©phane Ducasse

On Jul 31, 2010, at 9:12 PM, Norbert Hartl wrote: > > On 31.07.2010, at 20:06, StÃ©phane Ducasse wrote: > >> >> On Jul 31, 2010, at 6:05 PM, Norbert Hartl wrote: >> >>> Well, >>> >>> I was thinking about the same and I had quick peek at PetitParser. Somehow I tend to play with OMeta first. PetitParser looks promising but how is it possible to write a readable grammar if 60-80% of your grammar is the word "asParser"? >> >> PetitParser grammar are not full of 60%-80% with asParser. Have a look at PetitSmalltalk. What I liked >> is that in 30 when could cherry pick the smalltalk grammar and get the one for coral by recomposing the little parser you do like. > > Sorry, but I didn't grok that sentence. should not write mail eating ice cream :) >> What I liked is that in 30 min when could cherry pick the Smalltalk grammar >> and get the one for Coral by recomposing the little parsers you don't like. > >> Also try OMeta and when you will find it too slow come to use petitParser because petitParser is nearly the same speed as >> Smacc generated one and this is not the case of OMeta. It is up to you. > > I don't care about speed at the moment. At the moment I think OMeta is much more powerful. If I'll find out it is not or it provides powers I don't need than the speed argument could be somehting valuable. > >> And I prefer to use a language I like instead of another one.... Now what would be nice is to have an EBNF -> petitParser parser transformer. >> > Well, if you start to parse and analyze a different language with the parser then the phrase "prefer to use a language I like" becomes ambiguous really quick, don't you agree :) I like the asParser because this is explicit. And again try and see. I tried OMeta, read the papers and I prefer to be able to compose parser based on other ones like proposed by petit parser. > An EBNF parser would be indeed nice. Apparently there is one. > That is one thing I'm dreaming off for decades now. Using helvetia might solve this. But then DSLs are just different languages, too. > > If this is like the other projects for which I don't find enough time than all of my arguments are just...we'll see > > thanks, > > Norbert > >> Stef >>> >>> Norbert >>> >>> On 31.07.2010, at 17:39, StÃ©phane Ducasse wrote: >>> >>>> you can also have a look at PetitParser. >>>> >>>> Stef >>>> >>>> On Jul 29, 2010, at 3:14 PM, Norbert Hartl wrote: >>>> >>>>> Hmm, I've could have looked at squeaksource first :) And there it is. >>>>> >>>>> N. >>>>> >>>>> On 29.07.2010, at 14:11, Norbert Hartl wrote: >>>>> >>>>>> Is there a package of OMeta that can be installed in pharo. All I found was a .sar package somewhere. Maybe there is something newer, more adjusted? >>>>>> >>>>>> thanks, >>>>>> >>>>>> NOrbert >>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> Pharo-users mailing list >>>>>> Pharo-users(a)lists.gforge.inria.fr >>>>>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users >>>>> >>>>> >>>>> _______________________________________________ >>>>> Pharo-users mailing list >>>>> Pharo-users(a)lists.gforge.inria.fr >>>>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users >>>> >>>> >>>> _______________________________________________ >>>> Pharo-users mailing list >>>> Pharo-users(a)lists.gforge.inria.fr >>>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users >>> >>> >>> _______________________________________________ >>> Pharo-users mailing list >>> Pharo-users(a)lists.gforge.inria.fr >>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users >> >> >> _______________________________________________ >> Pharo-users mailing list >> Pharo-users(a)lists.gforge.inria.fr >> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users > > > _______________________________________________ > Pharo-users mailing list > Pharo-users(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users

July 31, 2010

Re: [Pharo-users] OMeta package for pharo?

by Norbert Hartl

On 31.07.2010, at 20:06, StÃ©phane Ducasse wrote: > > On Jul 31, 2010, at 6:05 PM, Norbert Hartl wrote: > >> Well, >> >> I was thinking about the same and I had quick peek at PetitParser. Somehow I tend to play with OMeta first. PetitParser looks promising but how is it possible to write a readable grammar if 60-80% of your grammar is the word "asParser"? > > PetitParser grammar are not full of 60%-80% with asParser. Have a look at PetitSmalltalk. What I liked > is that in 30 when could cherry pick the smalltalk grammar and get the one for coral by recomposing the little parser you do like. Sorry, but I didn't grok that sentence. > Also try OMeta and when you will find it too slow come to use petitParser because petitParser is nearly the same speed as > Smacc generated one and this is not the case of OMeta. It is up to you. I don't care about speed at the moment. At the moment I think OMeta is much more powerful. If I'll find out it is not or it provides powers I don't need than the speed argument could be somehting valuable. > And I prefer to use a language I like instead of another one.... Now what would be nice is to have an EBNF -> petitParser parser transformer. > Well, if you start to parse and analyze a different language with the parser then the phrase "prefer to use a language I like" becomes ambiguous really quick, don't you agree :) An EBNF parser would be indeed nice. That is one thing I'm dreaming off for decades now. Using helvetia might solve this. But then DSLs are just different languages, too. If this is like the other projects for which I don't find enough time than all of my arguments are just...we'll see thanks, Norbert > Stef >> >> Norbert >> >> On 31.07.2010, at 17:39, StÃ©phane Ducasse wrote: >> >>> you can also have a look at PetitParser. >>> >>> Stef >>> >>> On Jul 29, 2010, at 3:14 PM, Norbert Hartl wrote: >>> >>>> Hmm, I've could have looked at squeaksource first :) And there it is. >>>> >>>> N. >>>> >>>> On 29.07.2010, at 14:11, Norbert Hartl wrote: >>>> >>>>> Is there a package of OMeta that can be installed in pharo. All I found was a .sar package somewhere. Maybe there is something newer, more adjusted? >>>>> >>>>> thanks, >>>>> >>>>> NOrbert >>>>> >>>>> >>>>> _______________________________________________ >>>>> Pharo-users mailing list >>>>> Pharo-users(a)lists.gforge.inria.fr >>>>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users >>>> >>>> >>>> _______________________________________________ >>>> Pharo-users mailing list >>>> Pharo-users(a)lists.gforge.inria.fr >>>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users >>> >>> >>> _______________________________________________ >>> Pharo-users mailing list >>> Pharo-users(a)lists.gforge.inria.fr >>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users >> >> >> _______________________________________________ >> Pharo-users mailing list >> Pharo-users(a)lists.gforge.inria.fr >> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users > > > _______________________________________________ > Pharo-users mailing list > Pharo-users(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users

July 31, 2010

Re: [Pharo-users] OMeta package for pharo?

by StÃ©phane Ducasse

Thanks for the update :) >> And I prefer to use a language I like instead of another one.... Now what would be nice is to have an EBNF -> petitParser parser transformer. > > That exists, you "just" need to load Helvetia. > > Alternatively you can use the Grammar workbench that comes with > PetitParser, it automatically adds necessary converter methods. > > Lukas > > >> >> Stef >>> >>> Norbert >>> >>> On 31.07.2010, at 17:39, StÃ©phane Ducasse wrote: >>> >>>> you can also have a look at PetitParser. >>>> >>>> Stef >>>> >>>> On Jul 29, 2010, at 3:14 PM, Norbert Hartl wrote: >>>> >>>>> Hmm, I've could have looked at squeaksource first :) And there it is. >>>>> >>>>> N. >>>>> >>>>> On 29.07.2010, at 14:11, Norbert Hartl wrote: >>>>> >>>>>> Is there a package of OMeta that can be installed in pharo. All I found was a .sar package somewhere. Maybe there is something newer, more adjusted? >>>>>> >>>>>> thanks, >>>>>> >>>>>> NOrbert >>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> Pharo-users mailing list >>>>>> Pharo-users(a)lists.gforge.inria.fr >>>>>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users >>>>> >>>>> >>>>> _______________________________________________ >>>>> Pharo-users mailing list >>>>> Pharo-users(a)lists.gforge.inria.fr >>>>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users >>>> >>>> >>>> _______________________________________________ >>>> Pharo-users mailing list >>>> Pharo-users(a)lists.gforge.inria.fr >>>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users >>> >>> >>> _______________________________________________ >>> Pharo-users mailing list >>> Pharo-users(a)lists.gforge.inria.fr >>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users >> >> >> _______________________________________________ >> Pharo-users mailing list >> Pharo-users(a)lists.gforge.inria.fr >> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users >> > > > > -- > Lukas Renggli > www.lukas-renggli.ch > > _______________________________________________ > Pharo-users mailing list > Pharo-users(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users

July 31, 2010

Re: [Pharo-users] OMeta package for pharo?

by Lukas Renggli

> And I prefer to use a language I like instead of another one.... Now what would be nice is to have an EBNF -> petitParser parser transformer. That exists, you "just" need to load Helvetia. Alternatively you can use the Grammar workbench that comes with PetitParser, it automatically adds necessary converter methods. Lukas > > Stef >> >> Norbert >> >> On 31.07.2010, at 17:39, StÃ©phane Ducasse wrote: >> >>> you can also have a look at PetitParser. >>> >>> Stef >>> >>> On Jul 29, 2010, at 3:14 PM, Norbert Hartl wrote: >>> >>>> Hmm, I've could have looked at squeaksource first :) And there it is. >>>> >>>> N. >>>> >>>> On 29.07.2010, at 14:11, Norbert Hartl wrote: >>>> >>>>> Is there a package of OMeta that can be installed in pharo. All I found was a .sar package somewhere. Maybe there is something newer, more adjusted? >>>>> >>>>> thanks, >>>>> >>>>> NOrbert >>>>> >>>>> >>>>> _______________________________________________ >>>>> Pharo-users mailing list >>>>> Pharo-users(a)lists.gforge.inria.fr >>>>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users >>>> >>>> >>>> _______________________________________________ >>>> Pharo-users mailing list >>>> Pharo-users(a)lists.gforge.inria.fr >>>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users >>> >>> >>> _______________________________________________ >>> Pharo-users mailing list >>> Pharo-users(a)lists.gforge.inria.fr >>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users >> >> >> _______________________________________________ >> Pharo-users mailing list >> Pharo-users(a)lists.gforge.inria.fr >> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users > > > _______________________________________________ > Pharo-users mailing list > Pharo-users(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users > -- Lukas Renggli www.lukas-renggli.ch

July 31, 2010