Replacing an Object in an array with updated version of itself

Question

        Match *aMatch = [appDelegate.matchScoresArray 
objectAtIndex:numMatchCounter];
        aMatch.teamName2 = TeamNameHolder;
        [appDelegate.matchScoresArray replaceObjectAtIndex:NumMatchCounter 
withObject:aMatch];
        numMatchCounter++;

Does this make sense or is the change i made to teamName2 already reflected in the array, since they are the same object?

Or am I right to copy the object over itself back into the array.

I'm really confused.

Thanks -Code

Dan · Accepted Answer · 2010-12-03 20:43:13Z

4

You should grab the object from the array and update it. There is no need to copy over it.

You can grab a reference to the object and update it. The variable aMatch points to the same memory location as the object referenced in your array.

The following should be fine:

Match *aMatch = [appDelegate.matchScoresArray 
objectAtIndex:numMatchCounter];
        aMatch.teamName2 = TeamNameHolder;

answered Dec 3, 2010 at 20:43

Dan

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Comments

ennuikiller · Accepted Answer · 2010-12-03 20:41:33Z

0

You shouldn't need to copy the object back into the array. The array holds a refernece to the object. aA long as the object instnace remains the same there is no need to copy it back after changing it's properties.

answered Dec 3, 2010 at 20:41

ennuikiller

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