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

Re: [Pharo-users] smalltalk, objects and design - chamond liu

by Ignacio Sniechowski

Also the book by Chamond Liu has a chapter in Design Patterns... *Lic. Ignacio Sniechowski, MBA* *Prosavic SRL* *Tel: (011) 4542-6714* On Mon, Jan 26, 2015 at 1:38 AM, Sebastian Heidbrink <sheidev(a)yahoo.de> wrote: > no! > > > > > On 2015-01-25 7:48 PM, Mayuresh Kathe wrote: > >> thanks. a question; would the second book require me to work through the >> original book on design patterns first? >> >> ~mayuresh >> >> On Sun, Jan 25, 2015 at 06:06:31PM -0800, Sebastian Heidbrink wrote: >> >>> Definitely a good book! >>> >>> You might also consider these, too: >>> >>> for the couch, or desk while waiting: >>> http://sdmeta.gforge.inria.fr/FreeBooks/WithStyle/SmalltalkWithStyle.pdf >>> >>> a must >>> http://www.amazon.ca/The-Design-Patterns-Smalltalk- >>> Companion/dp/0201184621 >>> >>> Sebastian >>> >>> >>> On 2015-01-25 1:37 PM, Mayuresh Kathe wrote: >>> >>>> hello, >>>> >>>> would the book; smalltalk, objects and design by chamond liu be >>>> considered good to work through using "pharo"? >>>> >>>> i am currently working through; squeak, a quick trip to object-land. >>>> while nice as an introduction, doesn't feel like it might be deep enough >>>> for me as i progress further. >>>> >>>> i am looking at the pharo books, but, a previous discussion mentioned >>>> something about newer versions being in the works, would prefer to wait >>>> for them. >>>> >>>> ~mayuresh >>>> >>>> >>>> >>>> >>> >> > >

Jan. 26, 2015

Re: [Pharo-users] Conditional CSV parsing

by HernÃ¡n Morales Durand

2015-01-23 18:00 GMT-03:00 Sven Van Caekenberghe <sven(a)stfx.eu>: > > > On 23 Jan 2015, at 20:53, HernÃ¡n Morales Durand < > hernan.morales(a)gmail.com> wrote: > > > > Hi Sven, > > > > 2015-01-23 16:06 GMT-03:00 Sven Van Caekenberghe <sven(a)stfx.eu>: > > Hi HernÃ¡n, > > > > > On 23 Jan 2015, at 19:50, HernÃ¡n Morales Durand < > hernan.morales(a)gmail.com> wrote: > > > > > > I used to use a CSV parser from Squeak where I could attach > conditional iterations: > > > > > > csvParser rowsSkipFirst: 2 do: [: row | " some action ignoring first 2 > fields on each row " ]. > > > csvParser rowsSkipLast: 2 do: [: row | " some action ignoring last 2 > fields on each row " ]. > > > > With NeoCSVParser you can describe how each field is read and converted, > using the same mechanism you can ignore fields. Have a look at the senders > of #addIgnoredField from the unit tests. > > > > > > I am trying to understand the implementation, I see you included > #addIgnoredFields: for consecutive fields in > Neo-CSV-Core-SvenVanCaekenberghe.21 > > A question about usage then, adding ignored field(s) requires adding > field types on all other remaining fields? > > Yes, like this: > > testReadWithIgnoredField > | input | > input := (String crlf join: #( '1,2,a,3' '1,2,b,3' '1,2,c,3' '')). > self > assert: ((NeoCSVReader on: input readStream) > addIntegerField; > addIntegerField; > addIgnoredField; > addIntegerField; > upToEnd) > equals: { > #(1 2 3). > #(1 2 3). > #(1 2 3).} > > May be you like to know if you make a pass to NeoCSV, for some data sets I have 1 million of columns, it would be nice an addFieldsInterval: or such. Thank you. HernÃ¡n

Jan. 26, 2015

Re: [Pharo-users] smalltalk, objects and design - chamond liu

by Joachim Tuchel

Am 26.01.2015 04:48 schrieb Mayuresh Kathe <mayuresh(a)kathe.in>: > > thanks. a question; would the second book require me to work through the > original book on design patterns first? > No, you will able to understand the Smalltalk companion without the pattern bible. Chamond Liu is definitely a good book! Joachim > ~mayuresh > > On Sun, Jan 25, 2015 at 06:06:31PM -0800, Sebastian Heidbrink wrote: > > Definitely a good book! > > > > You might also consider these, too: > > > > for the couch, or desk while waiting: > > http://sdmeta.gforge.inria.fr/FreeBooks/WithStyle/SmalltalkWithStyle.pdf > > > > a must > > http://www.amazon.ca/The-Design-Patterns-Smalltalk-Companion/dp/0201184621 > > > > Sebastian > > > > > > On 2015-01-25 1:37 PM, Mayuresh Kathe wrote: > > >hello, > > > > > >would the book; smalltalk, objects and design by chamond liu be > > >considered good to work through using "pharo"? > > > > > >i am currently working through; squeak, a quick trip to object-land. > > >while nice as an introduction, doesn't feel like it might be deep enough > > >for me as i progress further. > > > > > >i am looking at the pharo books, but, a previous discussion mentioned > > >something about newer versions being in the works, would prefer to wait > > >for them. > > > > > >~mayuresh > > > > > > > > > > > > > > >

Jan. 26, 2015

Re: [Pharo-users] UI framework&design options

by HernÃ¡n Morales Durand

Hi Sebastian, 2015-01-25 14:52 GMT-03:00 Sebastian Heidbrink <sheidev(a)yahoo.de>: > Okay, .... I am new to the UI implementations and options in the Pharo > world and I am really confused. > > So, am I right to say. > - Polymorph is no more really the way to go? > Polymorph is a very low-level UI "framework". I wouldn't go there. > - Spec is the official way to go right now? > Spec is now probably the easiest library to build windowed UI's in Pharo. I don't know about its status or plans, the main developer left the project months ago. If you want something like the Maya editor, you better take a look to Connectors. > - Roassal2 is the way to go for visualizations? > Yes. > - Athens is well, I can't even say.... hmm interesting when it comes to > SVG? > - Glamour has to be seen in conjunction with Moose? I had a look into > GTSpotter and I have the feeling this took a long long time for > implementation. > Glamour is a browser framework. I think most Glamour users are Moose users. At the time I've tried to build a typical UI using it I had a hard time figuring how to fit everything into Glamour vocabulary. > - No e.g. Google material like UI possible since there are no frameworks > available to do animation stuff.... didn't Squeak and E-Toys do that? Is > there nothing left in Pharo? > The best I have seen for animation is the Open Cobalt platform in a Thesis presentation. But that's Squeak and uses Tweak - a supposedly enhanced E-Toys - The E-Toys system has been mostly removed from Pharo. I guess it was really unusable/unmaintanable from outside Squeak. > - Lumiere or Roassal3D when it come to sprites? > > Are all of these framework compatible to each other? How much maintenance > and repair effort may I expect when I combine e.g. Spec with Morphic and > Roassal2? > > You do not combine Spec with Morphic, it is already "combined" in the Pharo 3,4 image. AFAIK no-one yet build a bridge from Spec to web/native controls, so it is only theoretically cross-UI specification. You will have to invest time and energy if you want rich controls like those grids used in business apps. And you depend on Morphic widgets because Spec is only a description framework. This situation will presumably change in the future. > VASmalltalk has a very strong separation of UI-View and UI-Control layers. > Which Pharo framework could allow me t replace the look and feel of my > application without loosing my event handling/ control layers? > > This is Smalltalk and this is objects, and I am bound so much to a > windowing representation? There is nothing I could do like with HTML5 and > css? Put some pictures in the world and just add event handlers to them? > > HTML5 and CSS are a crap and I wouldn't bother with them if I could choose. > So I might go with Spec and Morphic then? Glamour is more Moose? Or is > there a direction to deprecate one of them? > > Go ahead with Spec but you need to research in SmalltalkHub and GitHub repositories for more advanced Spec examples. The problem is Pharo tools are poor examples for typical desktop applications UIs (built for Smalltalk developers and power users). Sure you can get how to instantiate basic controls (ComposableModel's) but you will have to learn to play layouts models and compose a lot of specs if you want the boring real world UI - however not the pain of using tools like Glade. > Thanks for all you into so far. I'll carefully read all the so far > provided resources. > > Sebastian > > > > > > > On 2015-01-25 6:04 AM, Stephan Eggermont wrote: > >> That Maya Node Editor looks like a PasteUpMorph with Connectors to me. >> You'd might want to wrap them (Morphic) in a in a standard window >> with menu bar and toolbar from either Spec or Glamour for now. >> >> And then follow Bloc developments to move there. >> >> Stephan >> >> >> > >

Jan. 26, 2015

Re: [Pharo-users] [ANN] OS Project with initial support for Ubuntu and Unix

by Martin BÃ¤hr

Excerpts from Torsten Bergmann's message of 2015-01-26 05:49:18 +0100: > > i am not running ubuntu at all. > and you wonder why an ubuntu specific project is not working - funny ;) i am not wondering why it's not working, i am wondering why it is hanging. if the code aborts and i get thrown into a debugger, i can deal with that (and make an attempt to fix it) but if it just silently hangs the whole image, i am stuck until i learn how to handle that. > > pharo4 is a few weeks old, i'll update that. > > > > i see no reason why opening a terminal should be ubuntu specific. in any case > > though, it should just fail and not hang. > Check class side methods UbuntuShell. > > It only calls "gnome-terminal" which might not be available. well, gnome-terminal is available, so it must be something else. now i just need to figure out how to get the debugger started manually, and then i'll investigate. 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. 26, 2015

Re: [Pharo-users] Pharo Sound of Silence

by Evan Donahue

That did the trick. Thanks. Evan -- View this message in context: http://forum.world.st/Pharo-Sound-of-Silence-tp4801562p4801633.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Jan. 26, 2015

Re: [Pharo-users] [ANN] OS Project with initial support for Ubuntu and Unix

by Torsten Bergmann

> i am not running ubuntu at all. and you wonder why an ubuntu specific project is not working - funny ;) > pharo4 is a few weeks old, i'll update that. > > i see no reason why opening a terminal should be ubuntu specific. in any case > though, it should just fail and not hang. Check class side methods UbuntuShell. It only calls "gnome-terminal" which might not be available. Bye T

Jan. 26, 2015

Re: [Pharo-users] [ANN] OS Project with initial support for Ubuntu and Unix

by Martin BÃ¤hr

Excerpts from Torsten Bergmann's message of 2015-01-26 05:14:38 +0100: > > i can't get it to work. > > whatever i try to load, pharo just hangs when i try to use one of the linux > > menu entries. > Are you sure you run the latest ubuntu, the latest 4.0 image and the latest Pharo > virtual machine? Did you follow the PPA installation guide on: http://pharo.org/download? i am not running ubuntu at all. pharo4 is a few weeks old, i'll update that. i see no reason why opening a terminal should be ubuntu specific. in any case though, it should just fail and not hang. > In any other case the debugger is your friend. Step through the methods > tell us where exactly it hangs (which call with with parameters). i need a little help here, i know how to use the debugger when it gets called on an error, but how do i start the debugger beforehand to trace what's happening before? do i need to set a breakpoint and then step through? where would i set that breakpoint? but before that, what do i need to actually install? just OSLinuxUbuntu or OSUnix as well? 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. 26, 2015

Re: [Pharo-users] smalltalk, objects and design - chamond liu

by Sebastian Heidbrink

no! On 2015-01-25 7:48 PM, Mayuresh Kathe wrote: > thanks. a question; would the second book require me to work through the > original book on design patterns first? > > ~mayuresh > > On Sun, Jan 25, 2015 at 06:06:31PM -0800, Sebastian Heidbrink wrote: >> Definitely a good book! >> >> You might also consider these, too: >> >> for the couch, or desk while waiting: >> http://sdmeta.gforge.inria.fr/FreeBooks/WithStyle/SmalltalkWithStyle.pdf >> >> a must >> http://www.amazon.ca/The-Design-Patterns-Smalltalk-Companion/dp/0201184621 >> >> Sebastian >> >> >> On 2015-01-25 1:37 PM, Mayuresh Kathe wrote: >>> hello, >>> >>> would the book; smalltalk, objects and design by chamond liu be >>> considered good to work through using "pharo"? >>> >>> i am currently working through; squeak, a quick trip to object-land. >>> while nice as an introduction, doesn't feel like it might be deep enough >>> for me as i progress further. >>> >>> i am looking at the pharo books, but, a previous discussion mentioned >>> something about newer versions being in the works, would prefer to wait >>> for them. >>> >>> ~mayuresh >>> >>> >>> >> >

Jan. 26, 2015

Re: [Pharo-users] [ANN] OS Project with initial support for Ubuntu and Unix

by Torsten Bergmann

> i can't get it to work. > whatever i try to load, pharo just hangs when i try to use one of the linux > menu entries. Are you sure you run the latest ubuntu, the latest 4.0 image and the latest Pharo virtual machine? Did you follow the PPA installation guide on: http://pharo.org/download? In any other case the debugger is your friend. Step through the methods tell us where exactly it hangs (which call with with parameters). Thx T.

Jan. 26, 2015