August 2011 - Pharo-users - lists.pharo.org

Re: [Pharo-users] PBE, System Browser, OmniBrowser2

by Sebastien Bigaret

Sorry, I forgot some elements, here they are: Le 04/08/2011 10:28, Sebastien Bigaret a Ã©crit : [...] > I eventually found out that it could be found at squeaksource, so I followed the instructions at: > http://www.squeaksource.com/@9DGVYh5n2jIJBj2R/bHwV8FLI > > Alas, after doing it, this somehow breaks things: > - the O2 can't be opened, exception: > - even the > > What did I miss? Is there a missing dependency not handled by > monticello? Or is there a serious incompatibility w/ pharo v1.2.2? [...] Alas, after doing it, this somehow breaks things: the O2 can't be opened, exception: Message not understood: Preferences class>>syntaxHighlightingAsYouType UPDATE: I've changed O2PluggableTextMorphWithShout>>okToStyle so that the line saying: Preferences syntaxHighlightingAsYouType ifFalse: [^false]. becomes: (Preferences respondsTo: #syntaxHighlightingAsYouType) ifTrue: [Preferences syntaxHighlightingAsYouType ifFalse: [^false]]. and I thought it was ok but then, I keep getting windows showing "***System error handling failed*** on MessageNotUnderstood: O2TextMorphEditorWithShout>>focused: so it does solve anything. Hmm, it seems trying to install O2 after just a few hours of Pharo was not a very good idea and leads me to complications I cannot handle for now! __ SÃ©bastien.

Aug. 4, 2011

PBE, System Browser, OmniBrowser2

by Sebastien Bigaret

Hi all, I've just beginning to learn Smalltalk & Pharo for some hours, and I already have some questions. At the very beginning, differences can be noticed between the browser exposed in PBE and the one exposed in Pharo v1.2.2. I've seen Marcus' answer to a similar question here: http://lists.gforge.inria.fr/pipermail/pharo-users/2011-August/002699.html and while "it works" (tm) I prefer starting my journey with the latest stable version of Pharo, esp. if as said, a *lot* of things have been changed and improved; I start experimenting stuff of my own while reading tutorials and PBE in particular. So I have two questions. 1. Creating a package and putting categories in it I've not seen anything about 'packages' within the OBSystemBrowser. What I've done is - open the Monticello Browser - create the package PBE-LightsOut there - back in the system browser, create the category 'PBE-LightsOut' and the category PBE-LightsOut is automatically assigned to the correct package (same goes for any categories whose names start with 'PBE-LightsOut') As far as I understand "Versioning your code with Monticello" (PBE v2 / drafts) this is the correct way of doing it, however I'd be grateful if someone could confirm... or correct me. 2. Trying to install OmniBrowser2 Just by curiosity, I tried to install OmniBrowser2 in Pharo v1.2.2. Using the halo I inspect it on PBE.image and found out that it was a SystemWindow using model: O2SystemBrowser within category 'O2-Enhancements-PackageBrower'. I eventually found out that it could be found at squeaksource, so I followed the instructions at: http://www.squeaksource.com/@9DGVYh5n2jIJBj2R/bHwV8FLI Alas, after doing it, this somehow breaks things: - the O2 can't be opened, exception: - even the What did I miss? Is there a missing dependency not handled by monticello? Or is there a serious incompatibility w/ pharo v1.2.2? NB: this is just out of curiousity, I do not *need* it, the only reason why I'm trying such a thing then asking for an explanation when it fails is that it helps me understand things better. However I have the feeling that it's too early for me to ask such things, so do not hesitate to simply answer to come back after having read the appropriate documents! A last question (related to the previsou one about O2): When inspecting morphs in PBE.image we get a SystemWindow w/ model: an O2PackageBrowser, which shows image thumbnails next to the morph, submorphs etc. If it is possible to install O2 on Pharo v1.2.2, will we get it as well? (this was my initial motivation for trying to install O2). Thanks in advance for any answer! BTW: since I will read the entire PBE, is it worth that I collect and document the differences on the fly and share it here? __ SÃ©bastien.

Aug. 4, 2011

Re: [Pharo-users] Begginer questions

by Mariano Martinez Peck

On Thu, Aug 4, 2011 at 9:22 AM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr>wrote: > > On Aug 4, 2011, at 9:10 AM, Jonathan Kelly wrote: > > > Hi, > > > > firstly, is there somewhere that explains what the icons in the system > > browser signify? (eg the three coloured dots)? > > ... are for collections > > > > > More importantly (to me anyway) ... I'm confused - why at: is defined in > > Object and not SequenceableCollection? > > at: in Object is because some Object like array have variable size > #(1 2 3) > #() > Array new: 6 > > have all different sizes > > How this is encoded? when you create a class you use variableSubclass: > instead of subclass: > > Now how to access such elements? > using at: > and this is not only for Array. > > BTW Collection subclass: #SequenceableCollection > so Sequenceable is not a variable class just an abstract class. > > Now > Object>>at: index > "Primitive. Assumes receiver is indexable. Answer the value of an > indexable element in the receiver. Fail if the argument index is not > an > Integer or is out of bounds. Essential. See Object documentation > whatIsAPrimitive. Read the class comment for a discussion about that > the fact > that the index can be a float." > > That's a great explanation. You can read more about that in a post I did a couple of months ago: http://marianopeck.wordpress.com/2011/05/07/class-formats-and-compiledmetho… Those I call "variable" are those where you can use #at: #at:put: for example, etc... -- Mariano http://marianopeck.wordpress.com

Aug. 4, 2011

Re: [Pharo-users] Begginer questions

by StÃ©phane Ducasse

On Aug 4, 2011, at 9:10 AM, Jonathan Kelly wrote: > Hi, > > firstly, is there somewhere that explains what the icons in the system > browser signify? (eg the three coloured dots)? ... are for collections > > More importantly (to me anyway) ... I'm confused - why at: is defined in > Object and not SequenceableCollection? at: in Object is because some Object like array have variable size #(1 2 3) #() Array new: 6 have all different sizes How this is encoded? when you create a class you use variableSubclass: instead of subclass: Now how to access such elements? using at: and this is not only for Array. BTW Collection subclass: #SequenceableCollection so Sequenceable is not a variable class just an abstract class. Now Object>>at: index "Primitive. Assumes receiver is indexable. Answer the value of an indexable element in the receiver. Fail if the argument index is not an Integer or is out of bounds. Essential. See Object documentation whatIsAPrimitive. Read the class comment for a discussion about that the fact that the index can be a float." > > Jonathan. >

Aug. 4, 2011

Re: [Pharo-users] [PBE-Spanish] Status update 2011-08-03

by StÃ©phane Ducasse

version. :) Stef On Aug 4, 2011, at 12:24 AM, NicolÃ¡s Paez wrote: > Hello everyone, > > Finally we were able to fix the some of the errors in PDF generation and now, all the 14 chapters are published in PDF format :-) > > You can download them from PharoByExample page. > Direct link: https://gforge.inria.fr/frs/download.php/28829/PBE1-Spanish-FullDraft-2011-… > > At the same time, some new volunteers joined the project to collaborate in the revision. > > Saludos! > Nico. > blog: nicopaez.wordpress.com

Aug. 4, 2011

Re: [Pharo-users] [PBE-Spanish] Status update 2011-08-03

by StÃ©phane Ducasse

Thanks a lot nicolas When do you plan to have the final draft? Stef On Aug 4, 2011, at 12:24 AM, NicolÃ¡s Paez wrote: > Hello everyone, > > Finally we were able to fix the some of the errors in PDF generation and now, all the 14 chapters are published in PDF format :-) > > You can download them from PharoByExample page. > Direct link: https://gforge.inria.fr/frs/download.php/28829/PBE1-Spanish-FullDraft-2011-… > > At the same time, some new volunteers joined the project to collaborate in the revision. > > Saludos! > Nico. > blog: nicopaez.wordpress.com

Aug. 4, 2011

Begginer questions

by Jonathan Kelly

Hi, firstly, is there somewhere that explains what the icons in the system browser signify? (eg the three coloured dots)? More importantly (to me anyway) ... I'm confused - why at: is defined in Object and not SequenceableCollection? Jonathan.

Aug. 4, 2011

Re: [Pharo-users] Tree-like workspace

by Marcus Denker

On Aug 3, 2011, at 11:09 PM, Offray Vladimir Luna CÃ¡rdenas wrote: > > > Ps: there also a lot of good blogs in the Smalltalk noosphere. May be in the links of the Pharo page we should put this social part of the project and community. > Yes, good idea. Do you have a list? Marcus -- Marcus Denker -- http://marcusdenker.de

Aug. 4, 2011

[PBE-Spanish] Status update 2011-08-03

by NicolÃ¡s Paez

Hello everyone, Finally we were able to fix the some of the errors in PDF generation and now, all the 14 chapters are published in PDF format :-) You can download them from PharoByExample page. Direct link: https://gforge.inria.fr/frs/download.php/28829/PBE1-Spanish-FullDraft-2011-… At the same time, some new volunteers joined the project to collaborate in the revision. Saludos! Nico. blog: nicopaez.wordpress.com

Aug. 3, 2011

Re: [Pharo-users] Tree-like workspace

by Offray Vladimir Luna CÃ¡rdenas

Hi Ted, I'm thinking in something like this. I will keep you posted. Cheers, Offray El 02/08/11 14:52, Ted F.A. van Gaalen escribiÃ³: > Hi there > > Well, perhaps you like this idea > (ideas are easier that programming, are they? :o) > > what about a workspace with > on the left a tree pane > with in the tree: saved workspaces > grouped under workspace "categories" > > e.g. > > aWorkspaceTree > +-aWorkspaceCategory > - aSavedWorkspace > - anotherSavedworkspace > +-yetAnotherWorkSpaceCategory > -yetAnotherSavedWorkspace > .. > + > > Greetings > Ted > > > > On Tue, Aug 2, 2011 at 8:25 PM, Benjamin > <benjamin.vanryseghem.pharo(a)gmail.com> wrote: >> >> On Aug 2, 2011, at 8:04 PM, Igor Stasenko wrote: >> >> On 2 August 2011 19:52, Offray Vladimir Luna CÃ¡rdenas<offray(a)riseup.net> >> wrote: >> >> Hi all, >> >> >> I'm reading with great joy, various pharo/smalltalk related books to get a >> >> glimpse of what is available. I started with PBE and almost finished, then >> >> the Seaside Tutorial by HPI and the Moose. I'm just browsing them and make >> >> some things here and there using the Pharo image and workspaces to create >> >> documentation. Now I'm reading the Master Thesis "Scripting Browsers with >> >> Glamour" by Phillip Bunge and as I read about MVC this part: >> >> Reenskaug, however, never intended for the breaking of encapsulation that >> >> the pattern promotes. He wrote later that the âtop level goal was to support >> >> the userâs mental model of the relevant information space and to enable the >> >> user to inspect and edit this information.â >> >> I think that I want the same: support my own mental model when I'm exploring >> >> Pharo/Smalltalk. I have been a long user of Leo[1] mostly for documentation >> >> related matters and I would like to have this kind of tree-like WorkSpace in >> >> Pharo, instead of the plain one provided by default. So I will continue the >> >> reading of the thesis, but I would like to know if there is any package that >> >> can provide this support for my "leo alike mental of documentation" inside >> >> Pharo. If this is not the case, I think that trying to create this >> >> "TreeSpace" in replace of the usual WorkSpace will be my first projects. >> >> [1] http://webpages.charter.net/edreamleo/front.html >> >> Please let me know any thoughts or advices about this idea. >> >> >> I think you should take a look on Nautilus project (Ben, can you >> provide link/instructions?). >> >> https://ci.lille.inria.fr/pharo/job/Nautilus/ >> :) >> The tree-based browser is Nautilus (Nautilus2 is more basic) >> If someone has some questions, I will be glad to answer :) >> >> Ben >> >> It using trees instead of lists to display contents in browser. >> >> But i puzzled, what are use of trees in workspace? Maybe you meant browser? >> Because by looking at screenshots [1], it is closely similar to browser. >> Workspace in smalltalk is just a text editing area where you can type >> small snippets of code and then evaluate them. >> I see no way where trees could be of any use in workspace. >> >> [1]http://webpages.charter.net/edreamleo/screen-shots.html >> >> >> Cheers, >> >> Offray >> >> >> >> >> >> -- >> Best regards, >> Igor Stasenko AKA sig. >> >> >> > >

Aug. 3, 2011