[Newbies] Global string search and replace in an image

Chris Cunnington smalltalktelevision at gmail.com
Mon Sep 10 23:43:21 UTC 2012

On 12-09-10 7:34 PM, Andy Burnett wrote:
> Hello,
> Is there a method - or other mechanism - that would let me find all 
> instances of 'foo' and replace them with 'bar' within an image? I 
> imagine there must be, but I can't find it.
> Cheers
> Andy
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Try this:

OrderedCollection allInstances size

Print that. That's the number of instances of OC in the image. Now try

OrderedCollection allInstances


OrderedCollection allInstances first

And take a look at the living instances inside the image. That's how you 
find instances. Replacing them is kind of a different issue. I'd say two 
things about that. The first is you don't want to just replace instances 
in the image. You need to be more specific of the context of your 
instances. Are they in an OrderedCollection or an Array? If so, find 
that instance and change them inside.

The second thing is you wouldn't generally replace instances in the 
image. Just wait and they'll be eaten by the garbage collector.

So finding instances is not to hard. Use #allInstances. To replace them 
you need to look not so much at the whole image but the application 
those instances are in. Inside your app.

Oh, yea. You can use OrderedCollection allIstances and both explore and 
inspect. You can see inside the instances that way. (Explore and inspect 
are one of the main menus.)

Hope that helps,

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