posted 24 March 2010 10:07            

Continuing on a theme from another recent thread about having variables/hot parameters inside literal arrays (and how that isn't possible in Capytalk):

I would like to sort an array of hot values from high to low. Taking advantage of the sorted array collection type, his smalltalk code works:

code:

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| sortedArray |
sortedArray := #(1 6 3) asSortedCollection.
!Index of: sortedArray
 

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!Index will then pull up the numbers in the correct (low to high) order. But the expression wont work with hot values in the array. Is there a way to somehow use the sorted array with hot values?

posted 24 March 2010 11:22            

BTW, just to clarify, asSortedCollection is a Smalltalk (not a CapyTalk) message. You cannot use Smalltalk to sort an Array of variables whose values are not yet known (or could change after the sorting). Because to put an element into its correctly sorted position, it must have a value so you can test whether that value is greater than or less than that of the other elements. Hot values can change while the Sound is playing but in your example, you are doing the sorting before the Sound even starts playing (all Smalltalk is executed before the Sound starts to play; it is only CapyTalk expressions that are evaluated while the Sound is playing).

quote:

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Continuing on a theme from another recent thread about having variables/hot parameters inside literal arrays (and how that isn't possible in Capytalk):

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I think the statement was rather that no language can use variables in a literal Array. That's just a matter of definition. The term 'literal' in this context means that all the elements are constants (in Smalltalk, those can be Strings, Characters, Symbols, or Numbers). Smalltalk provides a shortcut for creating literal Arrays. But it does not prevent you from creating Arrays of any objects, including variables. As I stated in that thread, Smalltalk Arrays can contain any objects (including other Arrays), when you create them using the Array's instance creation methods or, as Luddy suggested, using the collect: method, or by adding one element at a time in a loop (after the Array has been created and dimensioned).

posted 24 March 2010 12:45            

quote:

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Originally posted by SSC:
Hot values can change while the Sound is playing but in your example, you are doing the sorting before the Sound even starts playing

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I realized after I sent the message...I guess what I would need is a mechanism that re-evaluates and resorts the array every time the values of the members of the array change.

posted 21 December 2013 08:37            

quote:

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Originally posted by Phi Curtis:
I'm curious if there would be a way to construct iteratively it so that all you had to give was the number of hot values and the names of the hot values, and it would generate the array for you.

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Did anybody ever found out a way to do that?
Implementing a good sorting algorithm for !HotValues in CapyTalk is puzzling me for a while. My current idea was to create a SmallTalk script which "creates" the necessary capyTalk expressions for a give number of !HotValues in an Array... using vMin and vMax... but still no success yet.
Maybe someone else here in the Forum already hast a good solution for this problem.
Any help or ideas are appreciated!
All the best
Chris