That worked!!! Thanks - I never would have figure it out on my own.
I'm so confused though. I've never had to explicitly call an initialize method before - they seem to be invoked automatically when I use the word "new". Should I always call the initialize when I create a new instance? @Herbert - I'm making a pinball machine in which the little ball follows the order of execution of a student entered flowchart.at least that's what I'm trying to do ;-) From: beginners-boun...@lists.squeakfoundation.org [mailto:beginners-boun...@lists.squeakfoundation.org] On Behalf Of Alex Schenkman Sent: Sunday, November 08, 2009 3:59 AM To: A friendly place to get answers to even the most basic questions about Squeak. Subject: Re: [Newbies] OrderedCollection if imageMorphs I think you might need to call SymbolArray>>intialize by your self. If you look at the chain of message sends starting from 'SymbolArray new' 1) OrderedCollection new 2) OrderedCollection new: 3) Behavior basicNew There is no call to initialize. On Sat, Nov 7, 2009 at 16:28, Christine Wolfe <cwd...@earthlink.net> wrote: I want to put add an imageMorph on top of another imageMorph. I can do this with the following method (note SymbolBlank is an imageMorph MyBoard>>addSymbol |im| im := SymbolBlank new. self addMorph: im. im topLeft: 2...@2. I want to enhance this so I can choose one of a collection of imageMorphs to add. I created a class, SymbolArray, that is a subclass of OrderedCollection with the following initialize method. Each of the items I'm adding (SymbolBlank, SymbolGet, etc) is an imageMorph. SymbolArray>>initialize super initialize. self add: SymbolBlank new. self add: SymbolGet new. self add: SymbolProcess new. self add: SymbolPut new. self add: SymbolIf new. self add: SymbolWhile new. Then I tried to modify the addSymbol method as show below. When I do, I get the following error message which sounds like I don't have an element at index 1. SymbolArray(OrderedCollection)>>errorNoSuchElement SymbolArray(OrderedCollection)>>at: | sa si | sa := SymbolArray new. si := sa at: 1. self addMorph: si. si topLeft: 2...@2. I hope someone can help me figure out how to accomplish what I want to do. _______________________________________________ Beginners mailing list Beginners@lists.squeakfoundation.org http://lists.squeakfoundation.org/mailman/listinfo/beginners
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