Re: Selecting max in NSArray
Re: Selecting max in NSArray
- Subject: Re: Selecting max in NSArray
- From: Florijan Stamenkovic <email@hidden>
- Date: Fri, 11 Feb 2005 13:59:10 +0100
Of course you might want to get the object without sorting the array, both for performance or other reasons.
public Item itemWithMaxPrice(EOEditingContext ec)
{
NSArray objects = EOUtilities.objectsForEntityNamed(ec, "Item");
if ( (int count = objects.count()) == 0 )
return null;
Item returnItem = (Item)objects.objectAtIndex(0);
for(int i = 0 ; i < count ; i++)
{
if ( ((Item)objects.objectAtIndex(i)).price().intValue() > returnItem.price().intValue() )
returnItem = (Item)objects.objectAtIndex(i);
}
return returnItem;
}
On Feb 11, 2005, at 05:34, Robert Walker wrote:
Drew,
You could write a static method in you business class something like this:
I would do something like this:
public static Item itemWithMaxPrice(EOEditingContext ec) {
NSArray objects = EOUtilities.objectsForEntityNamed(ec, "Item");
NSArray sortedObjects = EOSortOrdering.sortedArrayUsingKeyOrderArray(objects, priceOrderings());
return (MyEO)sortedObjects.lastObject();
}
public static NSArray priceOrderings() {
EOSortOrdering priceOrdering = EOSortOrdering.sortOrderingWithKey("price", EOSortOrdering.CompareAscending);
return new NSArray(priceOrdering);
}
On Feb 10, 2005, at 10:58 PM, Drew Thoeni wrote:
I have an NSArray with several objects in it. I want to select the object that has the maximum price. However, using valueForKey("@max.item.price") returns, of course, the price for the item instead of the item. Is there a way to do this without having to refetch?
Drew
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--
Robert Walker
www.robertwalker1.com
"There are 10 kinds of people in the world. Those who think binary and those who don't."
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