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Need help sorting mulitple NSMutableArrays

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+5 A:

Encapsulate the data into a single object (HighScore) that has three properties: name, time, and score. Then store them in a single array and sort the single array.

Welcome to object-oriented programming.

Dave DeLong 2009-11-09 05:04:30

how would i do that, by creating an abject?

nathanjosiah 2009-11-09 05:05:34

Yes, you'll need to create a new class.

Dave DeLong 2009-11-09 05:08:46

how would i sort them after creating an object?

nathanjosiah 2009-11-09 05:08:46

Using the sorting methods on `NSArray`.... http://developer.apple.com/mac/library/documentation/Cocoa/Reference/Foundation/Classes/NSArray_Class/NSArray.html#//apple_ref/doc/uid/20000137-SW12 and also http://stackoverflow.com/questions/805547

Dave DeLong 2009-11-09 05:10:05

nathanjosiah: You'll need to implement the `compare:` method in the model object.

Peter Hosey 2009-11-09 06:05:57

how would i do that, i am very new to sorting arrays, i am not semi new to objective c

nathanjosiah 2009-11-09 06:11:14

@Peter - not necessarily. He can use an `NSSortDescriptor` to sort the array. That'll use the `compare:` methods already implemented on `NSDate`, `NSString`, etc. Implementing `compare:` is really only necessary if you need to do non-simple comparison (ie, compare multiple properties at once).

Dave DeLong 2009-11-09 14:41:26

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Need help sorting mulitple NSMutableArrays

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