June 2012 - Pharo-users - lists.pharo.org

Re: [Pharo-users] "Objects pointing to this value" and "Explore pointers"

by Davide Varvello

> > >On Mon, Jun 25, 2012 at 10:03 AM, Davide Varvello <[hidden email]> wrote: > >Hello there, >>Â I'm puzzled about those 2 items in inspector's menu and I've a couple of >>questions: >>1) What's the difference between them? It seems to me the meaning is quite >>similar. >>2) Every time I click on "Objects pointing to this value" nothing happens, >>is it right? I'm on Pharo 1.4 >>Â >Hi. I can confirm 2). It has always happened that to me. It has never worked properly. >And indeed, it looks the same as 1). I have no idea which should be the differences. > > > >Good, so I've just open an issueÂ http://code.google.com/p/pharo/issues/detail?id=6151&thanks=6151&ts=1340612… 3) Is there any documentation or example that explains how to use them? If >>not can it be added on Pharo book? >> >> > >Sure. If you need an account in the book let me know. > >yes, when I discover how to solve the issue :-) >There is actually now magic.Â > >Sorry, I can't understand. > >You just explore your object and then click on "explore pointers" and that opens a explorer with the objects poiting to that one. >I explainedÂ a bit in: http://marianopeck.wordpress.com/2012/05/19/pharo-tips-and-tricks/ >under title "Why GC is not collecting a particular object?" > > I see, but there is too few information. Actually I'm diving into Seaside objects that are not collected and I'm lost in pointers of pointers... Cheers Â Davide > -- View this message in context: http://forum.world.st/Objects-pointing-to-this-value-and-Explore-pointers-t… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

June 25, 2012

Re: [Pharo-users] "Objects pointing to this value" and "Explore pointers"

by Mariano Martinez Peck

On Mon, Jun 25, 2012 at 10:03 AM, Davide Varvello <varvello(a)yahoo.com>wrote: > Hello there, > I'm puzzled about those 2 items in inspector's menu and I've a couple of > questions: > 1) What's the difference between them? It seems to me the meaning is quite > similar. > 2) Every time I click on "Objects pointing to this value" nothing happens, > is it right? I'm on Pharo 1.4 > Hi. I can confirm 2). It has always happened that to me. It has never worked properly. And indeed, it looks the same as 1). I have no idea which should be the differences. > 3) Is there any documentation or example that explains how to use them? If > not can it be added on Pharo book? > > Sure. If you need an account in the book let me know. There is actually now magic. You just explore your object and then click on "explore pointers" and that opens a explorer with the objects poiting to that one. I explained a bit in: http://marianopeck.wordpress.com/2012/05/19/pharo-tips-and-tricks/ under title "*Why GC is not collecting a particular object?*" Cheers > Cheers > Davide > > > -- > View this message in context: > http://forum.world.st/Objects-pointing-to-this-value-and-Explore-pointers-t… > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > > -- Mariano http://marianopeck.wordpress.com

June 25, 2012

"Objects pointing to this value" and "Explore pointers"

by Davide Varvello

Hello there, I'm puzzled about those 2 items in inspector's menu and I've a couple of questions: 1) What's the difference between them? It seems to me the meaning is quite similar. 2) Every time I click on "Objects pointing to this value" nothing happens, is it right? I'm on Pharo 1.4 3) Is there any documentation or example that explains how to use them? If not can it be added on Pharo book? Cheers Davide -- View this message in context: http://forum.world.st/Objects-pointing-to-this-value-and-Explore-pointers-t… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

June 25, 2012

Re: [Pharo-users] Evaluating Nautilus

by HernÃ¡n Morales Durand

2012/6/24 Benjamin <benjamin.vanryseghem.pharo(a)gmail.com> > > On Jun 24, 2012, at 3:55 AM, HernÃ¡n Morales Durand wrote: > > Thanks for your answers Benjamin. After reading the chapter I should note > the plugin architecture seems very promising, as you've said it, very > different from OB. So to create my own browser should I subclass Nautilus? > which hook methods should I check first? > > > You should create your own plugin I guess :) > In a plugin, you can access the UI, and put another morph instead of the > text area, or whatever :) > cool, now is clearer to me the scope of plugins > Have a look a MondrianPlugin, it shows a bit what you can do :) > > > > Some usability issues: > > When I do "Find class...", type Object and Ok, it takes some time to > display the class on the browser. Maybe it would be nice to preload first N > methods in the method list? (i'm thinking in performance when browsing > large lists). > When I bring the menu over a class, there is no "browse hierarchy" option, > is this option missing on purpose? > > > This method exists, I just forget to invoke it :) > > I don't know other people, but I use it a lot to browse whole hierarchies. HernÃ¡n > Ben > > > Cheers, > > HernÃ¡n > > 2012/6/23 Benjamin <benjamin.vanryseghem.pharo(a)gmail.com> > >> You can found some doc here: >> http://rmod.lille.inria.fr/web/pier/software/Tools-Improvement/NautilusDocu… >> >> For Pharo 1.4, I try to maintain it a bit, but my focus is on the >> integration of Nautilus in Pharo 2.0 >> >> Ben >> >> On Jun 23, 2012, at 4:32 PM, HernÃ¡n Morales Durand wrote: >> >> For Nautilus I've read a review blog post at >> http://marianopeck.wordpress.com/2012/02/26/nautilus-the-reborn-of-the-syst… I didn't found anything else, maybe I'm missing something? >> >> I've installed Nautilus with the following script in a clean Pharo 1.4 >> core >> >> Gofer it >> url: 'http://ss3.gemstone.com/ss/Nautilus'; >> package: 'ConfigurationOfNautilus'; >> load. >> >> (Smalltalk at: #ConfigurationOfNautilus) perform: #loadRelease >> >> but after some random clicks I've received a SubscriptOutOfBounds >> exception. I've attached the stack from the debugger and a screenshot. >> >> HernÃ¡n >> >> 2012/6/23 Benjamin <benjamin.vanryseghem.pharo(a)gmail.com> >> >>> What have you read already ? >>> >>> Ben >>> >>> On Jun 23, 2012, at 7:18 AM, HernÃ¡n Morales Durand wrote: >>> >>> Hello Benjamin, >>> >>> 2012/6/22 Benjamin <benjamin.vanryseghem.pharo(a)gmail.com> >>> >>>> Hello :) >>>> >>>> This is a nice challenge :) >>>> Firstly, you have to know that the model behind Nautilus is really >>>> different that the one behind OB. Let's say nothing in common. >>>> On the other hand, the code pane modification can be made within an >>>> hour (maybe two if you are not confident with morphic, but it doesn't seems >>>> to be the case) using the plugin mecanism (Johan Fabry can testify ^^). >>>> >>> >>> Ok, let us know when more Nautilus documentation is available. >>> >>> >>>> Then, Nautilus is not cross platform, but we have developed Spec with >>>> the goal to use it for Nautilus, and Spec is(will be ^^) cross platform. So >>>> one day, Nautilus will be cross platform. Sadly, I will not be soon (I have >>>> to rewrite the whole ui). >>>> >>>> >>> thanks for the clarification and status update >>> >>> >>> >>>> About the command definition, I am not an OB expert, but I think that >>>> Command are used for menu entries. >>>> In Nautilus the menus definition are based on pragma, so any class can >>>> extend Nautilus menus. >>>> >>>> >>> Yes, commands in OB are used to define menu entries and their behavior. >>> >>> >>> >>>> In a nutshell, what I have seen in the video is doable in roughly a >>>> couple of hours :) >>>> If you decide to give a try to Nautilus, let me know, and I will be >>>> glad to help/answer question/provide pieces of code etc :) >>>> >>>> >>> Thanks for your reply, I will be in touch. >>> >>> HernÃ¡n >>> >>> >>> >>>> Ben >>>> >>>> >>>> On Jun 22, 2012, at 8:14 AM, HernÃ¡n Morales Durand wrote: >>>> >>>> First let me apologize for asking without properly evaluating first. I >>>> took some time and read about Nautilus which it seems a very nice work. >>>> I've developed a phylogenetics classifier using OmniBrowser, but I wondered >>>> if Nautilus could save me some effort, and I'm planning to test Pharo 1.4 >>>> or 2.0 in some future in which AFAIK OmniBrowser will not be supported >>>> anymore. >>>> >>>> - Some time ago I've modified the OmniBrowser framework to browse >>>> anything I wanted in the "code pane" (the lower pane typically used for >>>> displaying/editing code), as we had a complex OODB it was very useful, see >>>> http://www.youtube.com/watch?v=VxUaOFRHFPk for a demo. However it was >>>> not easy to understand the OB internals and make the modifications. Have >>>> you tried to implement such feature in Nautilus? >>>> - There is documentation for developing browsers with Nautilus? >>>> Something which explains the basic architecture, how it differs from OB? >>>> for example: >>>> --Do you have to define a metagraph? >>>> --May I have multiple definition panels? >>>> -Do you have a mapping for each node type (class?) with each column? >>>> -OB is not cross-UI (it depends on Morphic). Can I use a Nautilus >>>> browser within a web browser? >>>> - Another thing which is really easy is to define Commands in OB, >>>> (although the #isActive logic could become a mess without some care). How >>>> it is different in Nautilus? >>>> >>>> I'm sure I would rewrite my browsers with Nautilus, my key question is >>>> how much of the OB knowledge I can re-use? >>>> >>>> Cheers, >>>> >>>> HernÃ¡n >>>> >>>> -- >>>> HernÃ¡n Morales >>>> Institute of Veterinary Genetics. >>>> National Scientific and Technical Research Council (CONICET). >>>> La Plata (1900), Buenos Aires, Argentina. >>>> Telephone: +54 (0221) 421-1799. >>>> Internal: 422 >>>> Fax: 425-7980 or 421-1799. >>>> >>>> >>>> >>> > >

June 25, 2012

Re: [Pharo-users] FileSystemWriteStream>>next??

by Bernardo Ezequiel Contreras

Yes, you are right. In Pharo 1.4 The problem was that when you evaluate FileStream fileNamed: 'hello.t' it gives you an instance of MultiByteFileStream, and it's a read write stream. But when you evaluate (FileSystem disk workingDirectory resolve: 'hello.t') writeStream. it gives you a FileSystemWriteStream and it's just a write stream. I made a mistake when i changed my pet project. ( i was confused) Thanks. On Sun, Jun 24, 2012 at 6:28 AM, Esteban Lorenzano <estebanlm(a)gmail.com>wrote: > mmm... because is a "write" stream? > > On Jun 24, 2012, at 1:21 AM, Bernardo Ezequiel Contreras wrote: > > > Hi all, > > > > Anybody knows why the FileSystemWriteStream doesn't implement the > message next? > > > > Thanks. > > > > > > -- > > Bernardo E.C. > > > -- Bernardo E.C.

June 24, 2012

app to move to Pharo

by Robert Shiplett

This is the app that I will move to Pharo: http://passphrases.aule-browser.com/ Each 'word' rectangle at present is a rotate-enabled 3-D graphic object - next iteration each will be created by shape paths seq ( curl.com Curl language ) The 3-d is just to make fun when left open on desktop without a 'shuffle along' Robert

June 24, 2012

Re: [Pharo-users] [ANN] ZTimestamp

by Robert Shiplett

There are so very many practical cases where this lighter Zt will be useful. It just goes nicely with don't build what you won't use. Inserting time into generated web page meta content is one; fast "bookmarks" is another (with offset UTC set to hard-coded -00:00 ) R On 22 June 2012 19:14, Paul DeBruicker <pdebruic(a)gmail.com> wrote: > Yes I agree there's a need for speed. Â I think ZnTimestamp is a valuable addition. > > And maybe the primitive that returns ms since epoch and offset gets adopted so DateAndTime can be nearly as fast. > > > > On Jun 22, 2012, at 2:51 PM, Sven Van Caekenberghe <sven(a)beta9.be> wrote: > >> >> On 22 Jun 2012, at 22:23, Paul DeBruicker wrote: >> >>> On 06/22/2012 01:11 PM, Igor Stasenko wrote: >>>>>> Here are some benchmarks: >>>>>> >>>>>> [ 1000 timesRepeat: [ ZTimestamp now ] ] bench '1,910 per second.' >>>>>> [ 1000 timesRepeat: [ DateAndTime now ] ] bench '253 per second.' >>>> what? 253 per second? what it doing there? >>>> >>> >>> 253 iterations of 1000 timesRepeat:[DateAndTime now] per second. >>> >>> So ~253,000 iterations of DateAndTime now per second. >>> >>> [DateAndTime now] bench >> >> Yes, depending on the use case one can discuss about the absolute numbers. >> >> But consider a LRU style cache where on each operation the timestamp is updated to now, you'll want speed, right ? >> >> Sven >

June 24, 2012

Re: [Pharo-users] FileSystemWriteStream>>next??

by Robert Shiplett

In responding to users, one person's humour is another's sarcasm. Just a note ... no personal criticism intended. A user list is not a developer list. This may relate to why so few young women are involved ... the subtle putdown from a guy can go over very badly for the < 25 yr old single woman ... in my experience. The user is the developer's guest, in your home, So there are NO dumb questions. Not >>readNext or >>writeNext or why can't I test for when the counter finally gets divided by 0 ... or I made a different Class class .... por favor

June 24, 2012

Re: [Pharo-users] Evaluating Nautilus

by Benjamin

On Jun 24, 2012, at 3:55 AM, HernÃ¡n Morales Durand wrote: > Thanks for your answers Benjamin. After reading the chapter I should note the plugin architecture seems very promising, as you've said it, very different from OB. So to create my own browser should I subclass Nautilus? which hook methods should I check first? You should create your own plugin I guess :) In a plugin, you can access the UI, and put another morph instead of the text area, or whatever :) Have a look a MondrianPlugin, it shows a bit what you can do :) > > Some usability issues: > > When I do "Find class...", type Object and Ok, it takes some time to display the class on the browser. Maybe it would be nice to preload first N methods in the method list? (i'm thinking in performance when browsing large lists). > When I bring the menu over a class, there is no "browse hierarchy" option, is this option missing on purpose? This method exists, I just forget to invoke it :) Ben > Cheers, > > HernÃ¡n > > 2012/6/23 Benjamin <benjamin.vanryseghem.pharo(a)gmail.com> > You can found some doc here: http://rmod.lille.inria.fr/web/pier/software/Tools-Improvement/NautilusDocu… > > For Pharo 1.4, I try to maintain it a bit, but my focus is on the integration of Nautilus in Pharo 2.0 > > Ben > > On Jun 23, 2012, at 4:32 PM, HernÃ¡n Morales Durand wrote: > >> For Nautilus I've read a review blog post at http://marianopeck.wordpress.com/2012/02/26/nautilus-the-reborn-of-the-syst… but I didn't found anything else, maybe I'm missing something? >> >> I've installed Nautilus with the following script in a clean Pharo 1.4 core >> Gofer it >> url: 'http://ss3.gemstone.com/ss/Nautilus'; >> package: 'ConfigurationOfNautilus'; >> load. >> >> (Smalltalk at: #ConfigurationOfNautilus) perform: #loadRelease >> but after some random clicks I've received a SubscriptOutOfBounds exception. I've attached the stack from the debugger and a screenshot. >> >> HernÃ¡n >> >> 2012/6/23 Benjamin <benjamin.vanryseghem.pharo(a)gmail.com> >> What have you read already ? >> >> Ben >> >> On Jun 23, 2012, at 7:18 AM, HernÃ¡n Morales Durand wrote: >> >>> Hello Benjamin, >>> >>> 2012/6/22 Benjamin <benjamin.vanryseghem.pharo(a)gmail.com> >>> Hello :) >>> >>> This is a nice challenge :) >>> Firstly, you have to know that the model behind Nautilus is really different that the one behind OB. Let's say nothing in common. >>> On the other hand, the code pane modification can be made within an hour (maybe two if you are not confident with morphic, but it doesn't seems to be the case) using the plugin mecanism (Johan Fabry can testify ^^). >>> >>> Ok, let us know when more Nautilus documentation is available. >>> >>> Then, Nautilus is not cross platform, but we have developed Spec with the goal to use it for Nautilus, and Spec is(will be ^^) cross platform. So one day, Nautilus will be cross platform. Sadly, I will not be soon (I have to rewrite the whole ui). >>> >>> >>> thanks for the clarification and status update >>> >>> >>> About the command definition, I am not an OB expert, but I think that Command are used for menu entries. >>> In Nautilus the menus definition are based on pragma, so any class can extend Nautilus menus. >>> >>> >>> Yes, commands in OB are used to define menu entries and their behavior. >>> >>> >>> In a nutshell, what I have seen in the video is doable in roughly a couple of hours :) >>> If you decide to give a try to Nautilus, let me know, and I will be glad to help/answer question/provide pieces of code etc :) >>> >>> >>> Thanks for your reply, I will be in touch. >>> >>> HernÃ¡n >>> >>> >>> Ben >>> >>> >>> On Jun 22, 2012, at 8:14 AM, HernÃ¡n Morales Durand wrote: >>> >>>> First let me apologize for asking without properly evaluating first. I took some time and read about Nautilus which it seems a very nice work. I've developed a phylogenetics classifier using OmniBrowser, but I wondered if Nautilus could save me some effort, and I'm planning to test Pharo 1.4 or 2.0 in some future in which AFAIK OmniBrowser will not be supported anymore. >>>> >>>> - Some time ago I've modified the OmniBrowser framework to browse anything I wanted in the "code pane" (the lower pane typically used for displaying/editing code), as we had a complex OODB it was very useful, see http://www.youtube.com/watch?v=VxUaOFRHFPk for a demo. However it was not easy to understand the OB internals and make the modifications. Have you tried to implement such feature in Nautilus? >>>> - There is documentation for developing browsers with Nautilus? Something which explains the basic architecture, how it differs from OB? for example: >>>> --Do you have to define a metagraph? >>>> --May I have multiple definition panels? >>>> -Do you have a mapping for each node type (class?) with each column? >>>> -OB is not cross-UI (it depends on Morphic). Can I use a Nautilus browser within a web browser? >>>> - Another thing which is really easy is to define Commands in OB, (although the #isActive logic could become a mess without some care). How it is different in Nautilus? >>>> >>>> I'm sure I would rewrite my browsers with Nautilus, my key question is how much of the OB knowledge I can re-use? >>>> >>>> Cheers, >>>> >>>> HernÃ¡n >>>> >>>> -- >>>> HernÃ¡n Morales >>>> Institute of Veterinary Genetics. >>>> National Scientific and Technical Research Council (CONICET). >>>> La Plata (1900), Buenos Aires, Argentina. >>>> Telephone: +54 (0221) 421-1799. >>>> Internal: 422 >>>> Fax: 425-7980 or 421-1799. >>>> >>> >> >

June 24, 2012

Re: [Pharo-users] [ANN] NeoCSV

by Sven Van Caekenberghe

MIT, like all my public stuff, I should add a note somewhere I guess. On 24 Jun 2012, at 10:31, Tudor Girba wrote: > This is nice. Thanks! > > Btw, what is the license? :) > > Doru > > > On 22 Jun 2012, at 21:01, Sven Van Caekenberghe wrote: > >> CSV (Comma Separated Values) and more generally other delimiter-separated-value formats like TSV are probably the most common data exchange format. A number of implementations of this simple format already exist. >> >> NeoCSV is a more flexible and more efficient reader and writer for this format. >> >> You can find it in >> >> http://mc.stfx.eu/Neo >> >> ConfigurationOfNeoCSV is also available from >> >> http://www.squeaksource.com/MetacelloRepository >> http://squeaksource.com/MetaRepoForPharo14 >> http://ss3.gemstone.com/ss/MetaRepoForPharo20 >> >> Documentation can be found here >> >> https://github.com/svenvc/docs/blob/master/neo/neo-csv-paper.md >> >> Feedback and users are welcome. >> >> >> Sven >> >> >> -- >> Sven Van Caekenberghe >> http://stfx.eu >> Smalltalk is the Red Pill >> > > -- > www.tudorgirba.com > > "What we can governs what we wish." > > > >

June 24, 2012