Beginners April 2007

beginners@lists.squeakfoundation.org

43 participants
56 discussions

Morph Window -> Class? (was: [Newbies] error loading .pr file)
by Andrew Dabrowski 01 Apr '07

01 Apr '07

Thanks for your reply to my last message. Now I have a follow-up question. If I want to save my project as a .cs file, then I will have to convert my gui window (just a systemWindow with some buttons and textMorphs) into a proper class that shows up in the browser, correct? That is, my window was not coded, but put together interactively by dragging supplies out and using the viewer to attach scripts. Is there a way to convert the final product into a code format that can be exported in the .cs file? In VisualWorks (which I am also looking at but have not worked with at all) there seems to be a way to do this: the InstallOnClass utility. Is there something comparable in Squeak? > > El 3/31/07 10:01 PM, "Andrew Dabrowski" <dabrowsa(a)indiana.edu> escribió: > >> (RenamedClassSourceReader is Undeclared). > RenamedClassSourceReader don't exist in 3.9 final, that't why you have > problems. > >> Is this a problem with 3.9? > Maybe more as one, so we start 3.10 and you could try at > http://ftp.squeak.org/3.10alpha/Squeak3.10alpha.7073.zip > > And if some was wrong, you could complain direct to me. > As several things is changing, if you first Squeak experience , better learn > with it. > > As sharing code, I like to send me via private mail your .pr and only you > .cs. > > In general , .pr files works fine, but not always. > > And old release .pr could not work on newer images. > > Exist another ways of sharing code, I prefer using .sar what let's pack all > needed files in one auto loading file. > As example , in my Rompecabezas (puzzle) http://wiki.squeak.org/squeak/5861 > I have versions what let's guess image and load the necessary , if some is > not in the target one. > >>From install/preamble of version what could load into normal 3.9 and > SqueakLight > > | misFotos listaArchivos member form str | > Smalltalk version = 'SqueakLight' ifTrue:[ self fileInMemberNamed: > 'MixedCurves.2.cs'. > self fileInMemberNamed: 'MinimalSound.2.cs']. > > self fileInMemberNamed: 'Morphic-Puzzle.47.cs'. > > member _ self memberNamed: 'CatClubBallooning.jpg'. > PuzzleMorph foto: (Form fromBinaryStream: member contentStream binary). > member _ self memberNamed: 'Taunt011.wav'. > PuzzleMorph sonido: (member contentStream binary). > PuzzleMorph allPieces > > And you have code, picts, sound, any what was necessary. Guessing version is > a bonus track :=) > > > Edgar >

2 1

A Question of Style
by Tim Johnson 01 Apr '07

01 Apr '07

Hi, I know the rules for naming accessor and setter methods. But what do I do when the accessor method needs a parameter? I'll try to provide an example. A vendor sells an item called #apple. If I want to get the vendor's price for that #apple, I use a method such as the following: Vendor>>priceOf: aSymbol Now, to make the setter method, I have followed this pattern: Vendor>>priceOf: aSymbol is: newPrice Does this follow traditional patterns? I'll admit I have read the first half of "Smalltalk with Style" but not the second. Should I instead make the setter method look like this: Vendor>>setPriceOf: aSymbol to: newPrice ? Thanks, Tim [PS - Thanks to everyone who has been helping me on here lately, I have been lax in responding. You all bring up some good ideas and tips.]

7 11

Trouble using class Socket
by Marcelo Barbosa 01 Apr '07

01 Apr '07

Hi I'm starting with network classes of Squeak and having some trouble. I've tried to execute the following code in Workspace Window: Socket ping: 'www.cnn.com' and after a few seconds a dialog box poped up with the following message: 'Continue to wait for connection to desktop?' I cannot imagine what is wrong. My connection to the Internet is working perfectly. I can ping the host www.cnn.com using the Windows Command Prompt. I would appreciate so much any help. ------------------------------------------ Marcelo Pereira Barbosa São Paulo, Brasil

2 1

error loading .pr file
by Andrew Dabrowski 01 Apr '07

01 Apr '07

Hi, I'm brand new to squeak, I've just been playing with 3.9 for the last week. I've successfully put together a simple little app ( a Venn diagram puzzle) and I'm trying to export it as a project file. So I selected "save project on file" from the world menu, answered "yes" when asked if I wanted to included changes from the changes file, and saved a .pr file into the Squeaklets folder. But when I tried to test it by immediately loading the .pr file back, either from Navigator->Find or World->load project from file, I got a "message not understood" error. The Transcript shows: (RenamedClassSourceReader is Undeclared). I went back and saved the file again without including the changes, but that didn't help. Is this a problem with 3.9? What's the preferred why to save a project so that you can share it with someone else? I had a look at the Squeak FAQ, and that suggests sharing the entire image and changes files, but that seems a tad ridiculous - don't those files also contain everything unrelated to the project?

2 1

parsing date from string with custom pattern
by Petr Fischer 01 Apr '07

01 Apr '07

Hi, is there an easy way (one liner) to parse dates from strings with custom format (mm/dd/yyyy, dd.mm.yyyy, yy.mm.dd.....)? Method Date#fromString has fixed format "mm.dd.yyyy" only. Thanks! pf

1 0

error loading .pr file
by Andrew Dabrowski 01 Apr '07

01 Apr '07

1 0

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Beginners April 2007