Beginners May 2007

beginners@lists.squeakfoundation.org

52 participants
48 discussions

Re: Regarding smalltalk
by cdrick 21 May '07

21 May '07

(copy of a mail I sent to the wrong post) ramramesh_26(a)yahoo.co.in a écrit : > HI cdrick thanks for your reply > i will tell you in detail. > This is the actual DAML sentence (input) given to the XMLParser > <daml:Class rdf:ID = "Person"> > <rdfs:subClassOf rdf:resource = "#Animal" /> > <rdfs:subClassOf> > <daml:Restriction> > <daml:onProperty rdf:resource = "#hasParent" /> > <daml:toClass rdf:resource = "#Person" /> > </daml:Restriction> > </rdfs:subClassOf> > </daml:Class> > <person rdf:ID = "Joe"> > <hasParent rdf:resource = "#John"/> > </person> > > > Iam parsing this using the code | stream | > [ > | tree | > stream := FileStream fileNamed: 'test.daml'. > tree := XMLDOMParser parseDocumentFrom: stream. > tree elements collect: [:each| each name]. > ] ensure: [stream close]. > > >From the above code, "tree elements collect: [:each | each name]." actually collects the root elements. for example from the above example it collects <daml:class> and <person>. My aim is to collect all the elements including attributes and attribute values from that parsed tree in a sequeanceable order. show us the result you'd like for the example sentence... > After collecting it in a sequence i have to store it in a variable, so that i can check with that elements with other conditions. Not sure (and not expert), but I think you should use the SAXParser so that you navigate the xml tree and do whatever you want with elements/attributes... The DOMParser is actually building a full tree for further exploration... can be long and you have to process it again to get more information... I dit that once to collect wheteher data for a large xml file... The process is maybe not obvious, you need to subclass SAXHandler with say DAMLHandler, where you'll redefine messages likes characters: startDocument: endElement: startElement:attribute:list:... but the better is probably to subclass, then you put a self halt in the method startDocument: and little by little you see how it works... Also, you'll probably have to create a class where you'll store the information you want (Meteo class in my case...)... Sorry, but I cannot help you more on this... really busy for some monthes :'( Cédrick ps: I joined my meteo handlers, of course it won't work but it will give you another example of SAXHandler (that the XMLDOMParser which is a particular case of SAXHandler)... soory for the bad code :p

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do it, print it, inspect it, explore it, debug it missing from workspace menu
by mstram 21 May '07

21 May '07

Somehow I've lost the do it, print it, inspect it, explore it, debug it section from workspace menus. I installed the Magma packages and was trying to do the FishStore->Magma tutorial on the wiki. I guess I'll resinstall Magma on a backup of my image, but I'd like to know how I lost those items or .. how to build them from scratch onto a new menu. I'm looking through the wiki about morph's and morph menu's and have been looking through the system trying to see how debug / inspect an existing menu, but I'm a bit overwhelmed at the moment. This is only day 3 (hour ~20) of getting into Squeak / Seaside :) I've programmed with other languages / environments, but never with Smalltalk and am getting frustrated trying to "battle" the interface for the simplest things. Mike -- View this message in context: http://www.nabble.com/do-it%2C-print-it%2C-inspect-it%2C-explore-it%2C-debu… Sent from the Squeak - Beginners mailing list archive at Nabble.com.

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Morph Drop Shadows
by David H. Shanabrook 21 May '07

21 May '07

Can I change the pick up a morph so that it doesn't have a shadow? I tried in the morph menu to drop shadow: show shadow, but this doesn't work. It doesn't affect the morph whether the show shadow is checked or not. dhs

4 7

Window redraws
by Patrick Collison 20 May '07

20 May '07

Hi, Occasionally, when I start up my image (on Squeak 3.8), the environment seems to go through a process of progressively (and slowly!) redrawing every window that was open when the image was saved. I've discovered that I can avoid the thirty+-second wait that it takes for this process to complete by resizing the VM window a few times. Has anyone got any idea what could be going on? Cheers, Patrick

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Regarding smalltalk
by rameshvidya 18 May '07

18 May '07

I just parsed the DAML sentence using XMLParser. Next step i have to do is that i have to collect all the parsed elements and store it in a temporary variable. So please anyone tell me the syntax for this one. -- View this message in context: http://www.nabble.com/Regarding-smalltalk-tf3775310.html#a10675270 Sent from the Squeak - Beginners mailing list archive at Nabble.com.

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DNU when trying to update squeak-web-118
by Stephen Davies 17 May '07

17 May '07

Hi, I took a new squeak-web-118 image, opened the Universe Browser and attempted to update the package "OmniBrowser" from version 0.337 to 0.342. The result was a DNU for #packages sent to nil, the report is below: I feel helpless to fix this; I believe it has to do with the Universe Browser trying to refresh whilst the update is loading. "parent" is nil (?) I'm hoping for two things - first is a fix so I can keep my image up to date. But the other: more important even - somebody to show me how to get from this error to an understanding of what has gone wrong... Thanks, Steve ------------------------------- Subject: [BUG]UndefinedObject(Object)>>doesNotUnderstand: #packages 17 May 2007 7:43:48 pm VM: Mac OS - a SmalltalkImage Image: Squeak3.9 [latest update: #7067] SecurityManager state: Restricted: false FileAccess: true SocketAccess: true Working Dir /Applications/Squeak Trusted Dir /Applications/Squeak Untrusted Dir /Users/steve/Library/Preferences/Squeak/Internet/My Squeak UndefinedObject(Object)>>doesNotUnderstand: #packages Receiver: nil Arguments and temporary variables: aMessage: packages Receiver's instance variables: nil OBMetaEdge>>nodesForParent: Receiver: #packages->package Arguments and temporary variables: aNode: nil ea: nil Receiver's instance variables: label: 'Packages' selector: #packages metaNode: package #packageVersions->packageVersion OBModalFilter>>nodesForParent: Receiver: an OBModalFilter Arguments and temporary variables: aNode: nil Receiver's instance variables: metaNode: universe #categories->category #packages->package #statuses->status monitor: an OBColumn(OmniBrowser) selection: 2 OBColumn>>getChildren Receiver: an OBColumn(OmniBrowser) Arguments and temporary variables: Receiver's instance variables: panel: an OBColumnPanel filter: an OBModalFilter parent: nil children: an OrderedCollection(an OBUPackageNode an OBUPackageNode an OBUPackag...etc... selection: 76 --- The full stack --- UndefinedObject(Object)>>doesNotUnderstand: #packages OBMetaEdge>>nodesForParent: OBModalFilter>>nodesForParent: OBColumn>>getChildren - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - OBColumn>>refreshAndSignal: OBColumn>>refresh: MessageSend>>valueWithArguments: [] in ActionSequence>>valueWithArguments: {[:each | answer := each valueWithArguments: anArray]} ActionSequence(SequenceableCollection)>>do: ActionSequence>>valueWithArguments: [] in OBAnnouncer>>announce: {[:class :action | (ann isKindOf: class) ifTrue: [action valueWithArguments...]} [] in IdentityDictionary(Dictionary)>>keysAndValuesDo: {[:assoc | aBlock value: assoc key value: assoc value]} IdentityDictionary(Set)>>do: IdentityDictionary(Dictionary)>>associationsDo: IdentityDictionary(Dictionary)>>keysAndValuesDo: OBAnnouncer>>announce: OBUBrowser(OBBrowser)>>announce: OBUFixedButtonPanel(OBPanel)>>announce: OBUInstallSelectionCommand(OBUCommand)>>refreshRequired OBUInstallSelectionCommand>>execute PluggableButtonMorph>>performAction [] in PluggableButtonMorph>>mouseUp: {[:m | (m containsPoint: evt cursorPoint) ifTrue: [m performAction]]} Array(SequenceableCollection)>>do: PluggableButtonMorph>>mouseUp: PluggableButtonMorph(Morph)>>handleMouseUp: MouseButtonEvent>>sentTo: PluggableButtonMorph(Morph)>>handleEvent: PluggableButtonMorph(Morph)>>handleFocusEvent: [] in HandMorph>>sendFocusEvent:to:clear: {[ActiveHand := self. ActiveEvent := anEvent. result := focusHolder han...]} [] in PasteUpMorph>>becomeActiveDuring: {[aBlock value]} BlockContext>>on:do: PasteUpMorph>>becomeActiveDuring: HandMorph>>sendFocusEvent:to:clear: HandMorph>>sendEvent:focus:clear: HandMorph>>sendMouseEvent: HandMorph>>handleEvent: HandMorph>>processEvents [] in WorldState>>doOneCycleNowFor: {[:h | ActiveHand := h. h processEvents. capturingGesture := capturingGest...]} Array(SequenceableCollection)>>do: WorldState>>handsDo: WorldState>>doOneCycleNowFor: WorldState>>doOneCycleFor: PasteUpMorph>>doOneCycle [] in Project class>>spawnNewProcess {[[World doOneCycle. Processor yield. false] whileFalse. nil]} [] in BlockContext>>newProcess {[self value. Processor terminateActive]}

2 2

Sorting
by Chris Cunnington 17 May '07

17 May '07

Hi Squeakers, I have a string: 'Hello'. To reverse the letters I write: a := 'Hello' reverse. And I get 'olleH'. How do I sort the letters alphabetically? So I get 'eHllo'? a := 'Hello' sortBy: [:x :y | a < b ] What parameter do you use to sort the letters? Do you have to convert them to a number, an Ascii or Unicode number first, and then sort those numbers? Cheers, Chris Cunnington

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Passing arguments to squeak image
by Patrick Collison 17 May '07

17 May '07

Hi, Using latest SVN Squeak, I'm having trouble passing arguments to an image. As far as I can see from the usage, it looks like "squeak foo.image bar" should pass bar as an argument to the image. Instead, though, I get a load error (the problem seems to be that Squeak is trying to load the url "file:bar" using the CodeLoader). Is this a bug, or am I doing something wrong? Cheers, Patrick

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A new home for the Weekly Squeak
by Giovanni Corriga 16 May '07

16 May '07

Hi Squeakers! As of today, the Weekly Squeak news blog has a new home at http://news.squeak.org . The blog will still be hosted by Wordpress.com, and the previous address http://weeklysqueak.wordpress.com will still work and redirect you to the new address. Giovanni

1 0

FunSqueak3.10 ready
by Edgar J. De Cleene 14 May '07

14 May '07

Thanks to Klaus ftp hosting , now you have ftp://squeak.cobss.ch/pub/FunSqueak3.10alpha.7105.zip What you get: Up to date 3.10 Return of: Fabrik by Dan Ingalls SqueakAmp http://www.bobjectsinc.com/squeakamp/ Wonderland www.cs.cmu.edu/~jpierce/JPierceCV.pdf MorphicWrappers MathMorphs http://mate.dm.uba.ar/~caniglia/mathMorphs.html Old times goods Connectors by Ned Kontz IRC by Lex Spoon New things Musical Object for Squeak by Stéphane Rollandin What needs : Shout OSProcess Regex Network-HTML Could find more into, explore. It's alpha so wait troubles ! Mac users, I advice to use the Unix VM and the right plugs. If any have some old what is not in the image , send mail. To all Squeakers of all times, working very hard, it's my way to say thanks. Edgar

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Beginners May 2007