Re: [Newbies] what's a model?
Oh yes, I've read Squeak By Example and played around with Morphic a bit (although haven't created anything useful with it), I just need to figure out how to write a class that I can use as a "model" with Morphs such as PluggableListMorph. [EMAIL PROTECTED] wrote: Aidan, A "model" is the logic of your program. Generally, it is the abstract concept that your UI attempts to present to the user. For example, if you are creating a personal finance program, your model might consist of objects like BankAccount and Transaction, whereas your UI might consist of BankAccountView and TransactionView. "Model" is one third of the time-tested concept of Model-View-Controller, which is a "pattern" for creating programs with user interfaces. If you search for MVC on the web, you should find some pretty useful information. Generally the theory behind MVC is that your application's logic (or model) should be separate from its interface / presentation (view). The controller would be some "glue" which mediates between the model and the view, but often the controller is sort of melded into the view these days. Squeak does include a class called Model, which is abstract and not much used these days. Best not be distracted by it. Hope that helps! Have you looked at some of the great Morphic tutorials on the web? I found the chapter in Squeak By Example very informative. ___ Beginners mailing list Beginners@lists.squeakfoundation.org http://lists.squeakfoundation.org/mailman/listinfo/beginners
Re: [Newbies] what's a model?
Aidan, A "model" is the logic of your program. Generally, it is the abstract concept that your UI attempts to present to the user. For example, if you are creating a personal finance program, your model might consist of objects like BankAccount and Transaction, whereas your UI might consist of BankAccountView and TransactionView. "Model" is one third of the time-tested concept of Model-View-Controller, which is a "pattern" for creating programs with user interfaces. If you search for MVC on the web, you should find some pretty useful information. Generally the theory behind MVC is that your application's logic (or model) should be separate from its interface / presentation (view). The controller would be some "glue" which mediates between the model and the view, but often the controller is sort of melded into the view these days. Squeak does include a class called Model, which is abstract and not much used these days. Best not be distracted by it. Hope that helps! Have you looked at some of the great Morphic tutorials on the web? I found the chapter in Squeak By Example very informative. - TimJ - Original Message - From: Aidan Gauland <[EMAIL PROTECTED]> Date: Wednesday, December 10, 2008 9:55 pm Subject: [Newbies] what's a model? To: beginners@lists.squeakfoundation.org > Hello, > > I've been poking around on the web for information on how to > build GUIs > using Morphic's widget-like morphs, and I've found some helpful > stuff, but a > term that I see used a lot in this context is "model", which I > still can't > figure out. > > So my question is: "What's a model in Squeak? How do I use them > with Morphs?" > > Thanks, > Aidan > ___ > Beginners mailing list > Beginners@lists.squeakfoundation.org > http://lists.squeakfoundation.org/mailman/listinfo/beginners > > ___ Beginners mailing list Beginners@lists.squeakfoundation.org http://lists.squeakfoundation.org/mailman/listinfo/beginners
[Newbies] what's a model?
Hello, I've been poking around on the web for information on how to build GUIs using Morphic's widget-like morphs, and I've found some helpful stuff, but a term that I see used a lot in this context is "model", which I still can't figure out. So my question is: "What's a model in Squeak? How do I use them with Morphs?" Thanks, Aidan ___ Beginners mailing list Beginners@lists.squeakfoundation.org http://lists.squeakfoundation.org/mailman/listinfo/beginners
Re: [Newbies] Re: new vs. initialize
Hello Zulq, >> Now I read on the WWW that the added sending of #initialize from >> Behaviour>>new was added in 3.9. ZA> Where did you read this? I've been using Squeak for a few years and as ZA> far as I know the default implementation of #new has always sent ZA> #initialize. 3.6 does not initialize automatically 3.7 and younger do. -- Cheers, Herbert ___ Beginners mailing list Beginners@lists.squeakfoundation.org http://lists.squeakfoundation.org/mailman/listinfo/beginners
[Newbies] A browser for the WordNet lexical db in Smalltalk, anybody?
Hi list, has anyone started with/plans for a browser for a WordNet lexical db in Smalltalk? I checked their Prolog formatted files, - http://wordnet.princeton.edu/obtain actually read them into a Squeak .image; they need only a handful of memory MB (7.5, strings as yet not symbolized) plus less than 10MB of disk space if gloss texts would be stored in the .changes file. Also, if anyone already has (or had) ideas for a GUI for a WordNet browser in Squeak please let me know (!) I cannot say I like their basic Web interface (it has nothing that a Smalltalk browser offers) - http://wordnet.princeton.edu/perl/webwn?o0=1&o1=1&r=1&s=small+talk&i=1&h=100#c and think that can be done better for local use, for example in class rooms (and of course when authoring documentation for Squeak ;) but, unlikely for the OLPC because of the footprint. Thanks in advance for your feedback. /Klaus -- "If at first, the idea is not absurd, then there is no hope for it". Albert Einstein ___ Beginners mailing list Beginners@lists.squeakfoundation.org http://lists.squeakfoundation.org/mailman/listinfo/beginners
[Newbies] Re: new vs. initialize
Hi Greg, My comments are below... Greg A. Woods; Planix, Inc. wrote: > Now I read on the WWW that the added sending of #initialize from > Behaviour>>new was added in 3.9. Where did you read this? I've been using Squeak for a few years and as far as I know the default implementation of #new has always sent #initialize. The history of Behaviour>>new shows one version dated 23-8-2003. This is well before 3.9. Just for fun I did a search for senders of #basicNew and I found quite a few which are from #new methods in classes which subclass directly from Object and which are in classes that also define their own #initialize method. The curious bit is how some of these #new methods do send #initialize, but not all. I'm guessing some that don't are for abstract classes, but is it true that all are? There are a number of reasons one might call #basicNew, e.g. compatibility with other dialects, limiting use of #new by signalling an error, avoiding the normal initialisation from an alternative constructor, etc. In most cases "super new" would also work. Those that call intitialize may do so because they still need that method to be called, perhaps after doing something else. Some call it for compatability... Also, doesn't this still create an _enormous_ portability problem with other Smalltalks? Have a look at what Seaside and other cross dialect projects do. I believe but am not sure they all have some sort of "self basicNew initialize" on all their top level classes. - Zulq ___ Beginners mailing list Beginners@lists.squeakfoundation.org http://lists.squeakfoundation.org/mailman/listinfo/beginners
