ActionScript :: Extract A Subset Of Objects From A Sorted Array 'efficiently'?
Jan 25, 2010
I have a browser-deployed Flash app (not an AIR app with access to SQLConnection) and it fetches JSON results from a remote server via HTTPService. I need to extract subsets from the returned resultset, an array of objects, efficiently. Mutltiple calls through the cloud to the back-end won't do. It all has to happen client-side.Is there any collection class in Flex ActionScript that can sort an array of objects by one of the properties the objects all have in common, like the Array sortOn method, and then also provides a binary search method can extract a subset of objects from the sorted version of the array without visiting every item in the array and comparing?if I have an array of objects and each object had a zip property and a name property, I'd like to be able to extract all objects with zip = 10015 from the a copy of the original array where the copy has been sorted on zip.
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I know
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Longtime Flash Pro, Flex, and AIR developer, Dmitriy Yukhanov, has written a new article for the Dev Center listing over 60 tips for efficient use of Flash Pro. Categories include: Improving performance Optimizing file size of project assets Developing Flash projects more elegantly Making project files easier to update Most of the tips are illustrated and quite easy to understand. This is one of the most comprehensive articles on this topic that I have seen.
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My code:
ActionScript Code:
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Works fine (it's in a for loop, ...after the main XML object is loaded)... but this:
ActionScript Code:
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