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https://issues.apache.org/jira/browse/CB-402?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13240079#comment-13240079
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Shazron Abdullah commented on CB-402:
-------------------------------------
Predicate Programming Guide:
http://developer.apple.com/library/ios/#documentation/Cocoa/Conceptual/Predicates/predicates.html#//apple_ref/doc/uid/TP40001789
> Improve Contacts search taking a long time by using
> (NSArray*)filteredArrayUsingPredicate:(NSPredicate*)predicate
> -----------------------------------------------------------------------------------------------------------------
>
> Key: CB-402
> URL: https://issues.apache.org/jira/browse/CB-402
> Project: Apache Callback
> Issue Type: Improvement
> Components: iOS
> Reporter: Shazron Abdullah
> Assignee: Shazron Abdullah
>
> We have to analyze this first to see if it is a big problem, with a huge N. I
> believe it is.
> Right now our search method is O( n ), while using Apple's search method it
> is possibly O( log n ) - but that's just a guess if I assume internally they
> use a binary search.
> Steps:
> 1. Grab all the contacts in a NSArray through
> ABAddressBookCopyArrayOfAllPeople
> 2. Construct a NSPredicate for the filter, and call
> filteredArrayUsingPredicate on the NSArray returned in step 1.
> 3. Convert the NSArray returned in step 2. to our CDVContact objects
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