I thought there was a way to quickly ask a NSSet
to poll its members and return a sum of say an NSInteger
property in each of its objects, but I may very well be confusing this with the Mac OS X side of things. Does this exist in Cococa Touch?
The closest thing I can find is objectEnumerator
, whereby I suppose I could rifle through each object and increment my own variable. Does the better way exist?
If you're trying to find the sum of a given property (theIntegerPropertyToSum
) for each member of an array/set-derived class that's KVC-compliant (theSet
), you can do the following:
NSNumber* theSum = [theSet valueForKeyPath:@"@sum.theIntegerPropertyToSum"];
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