Question

My first instinct is to

FooType *myFoo = nil;
for (id obj in myArray) {
    if ( [obj isKindOfClass:[FooType class]] ) myFoo = obj;
}

With all the goodies in Objective-C and NSArray, there’s gotta be a better way, right?

Answer 1

With Blocks support (in iOS 4 or Snow Leopard):

FooType *myFoo = nil;
NSUInteger index = [myArray indexOfObjectPassingTest:^BOOL (id obj, NSUInteger idx, BOOL *stop) {
    return [obj isKindOfClass:[FooType class]];
}];
if (index != NSNotFound) myFoo = [myArray objectAtIndex:index];

It’s not really any shorter. You might consider writing your own NSArray method to do so.