[Newbies] Referencing a variable?

[Amir Ansari]

Yes!  That did it!

First time I've used 'perform:'; I'd never have considered it.

Thank you so much!

Amir


On 3 Dec 2009, at 12:05, Bert Freudenberg wrote:

> On 03.12.2009, at 12:59, Amir Ansari wrote:
>>
>> But I'd like to reuse the code as much as possible, so I'd prefer to 
>> do something like this:
>>
>> element := 'title'.
>> choice := myLibrary collect: [:each | each element].
>
> element := #title.
> choice := myLibrary collect: [:each | each perform: element].
>
> Note that this sends the "title" message. There is no way to directly 
> access an instance variable from outside the object. Objects in 
> Smalltalk are true objects, not data structures. The code above only 
> works if you implemented a "title" method that returns the instance 
> variable.
>
> - Bert -
>
>
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