Re: tutorial: "doesNotUnderstand" instance variable

Andrew n marshall wrote:
> I'm trying to go through the pipsqueak tutorial, but it throws a 
> doesNotUnderstand error when I try to initialize the exitSides 
> instance variable the first time.  The browser shows the exitSides 
> variable (with nil value), so the VM knows its there.
>
> This is my class declaration:
> Object subclass: #BlankCell
>    instanceVariableNames: 'activeSegments exitSides'
>    classVariableNames: ''
>    poolDictionaries: ''
>    category: 'Laser-Game-Model'
>
> This is my init function:
> initializeExitSides
>    self exitSides: Dictionary new.
Use := when assigning variables.
Karl
>    self exitSides at: #north put: #south.
>    self exitSides at: #east put: #west.
>    self exitSides at: #south put: #north.
>    self exitSides at: #west put: #east.
>
> And a screen shot of my error stack trace is here:
>  http://www.isi.edu/~amarshal/transfers/squeak_error.png
> (How do I copy it as text anyway?)
>
>
> Anm
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