[Newbies] Re: set variables before initialize and write out files before exit

[Joseph Alotta]

thanks Ron, I hadn’t thought about class variables.  

sincerely,

Joe.


> On Jun 10, 2016, at 12:17 PM, Ron Teitelbaum [via Smalltalk] <ml-node+s1294792n4900450h99 at n4.nabble.com> wrote:
> 
> Hi Joe, 
> 
> I'm not sure in what context you mean.  Why wouldn't you run this in the 
> #initialize method? 
> 
> JoeAccountingParser class>>configure 
>         InPath := '/Users/jja/Desktop/accountingfiles/'. 
>         OutPath := '/Users/jja/Desktop/accountingfiles processed/'. 
> 
> JoeAccountingParser >>initialize 
>         self class configure. 
>         fileParser := FileParser new. 
>         fileParser inPath: self class InPath. 
>         fileParser outPath: self class OutPath. 
> 
> JoeAccountingParser class >> process: aFile 
>         ^(self new) process: aFile; yourself. 
>          	
> 
> JoeAccountingParser process: aFile 
>         fileParser readThis: aFile. 
>         fileParser process. 
>         fileParser write. 
> 
> This is a bit refactored and it uses the configure method I recommend to you 
> earlier.  This configure method could be anything including a method to read 
> an external file for details. 
> 
> Solutions like a factory method pattern come to mind if you don't want to 
> use #initialize. 
> 
> JoeAccountingParser class >> process: aFile from: inPath to: outPath 
> 
> There is also Behavior #startUp and #shutDown on the class side. 
> 
> See Smalltalk #addToStartUpList: #addToShutDownList: 
> 
> These fire when an image is started or shutdown.   
> 
> I think a bit more explanation of what problem you are having is needed. 
> 
> All the best, 
> 
> Ron Teitelbaum 
> 
> 
> 
> > From: Joseph Alotta 
> > Sent: Friday, June 10, 2016 12:23 PM 
> > 
> > Greetings, 
> > 
> > My object needs to have some variables set before it can run the 
> initialize
> 
> > method and also it needs to have run an exit method. 
> > 
> > f := FileParser new. 
> > f inPath: '/Users/jja/Desktop/accountingfiles/'. 
> > f readThis: 'rei mastercard.csv'. 
> > f process 
> > f outPath: '/Users/jja/Desktop/accountingfiles processed/'. 
> > f write. 
> > 
> > 
> > Is there a better way to do this? 
> > 
> > Sincerely, 
> > 
> > Joe. 
> > 
> > 
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