How to get the count of an array of objects defined in an interface?

Question

I have an interface definition like this:

@interface MasterPanelsController : UIViewController {
    PanelSuperclass *panels[3];
}

I'm trying to programmatically get the count of my panels array, but [panels count] and sizeof(panels) don't work. How can I determine the size of this array?

(Note: PanelSuperclass is a subclass of UIView)

How about [panels length] ? (if you have to store the, this way I mean) — reddersky
– reddersky, Commented Dec 9, 2011 at 15:27

Luiz Carlos Querino Filho · Accepted Answer · 2011-12-09 15:29:12Z

2

Try using:

int arrayCount = sizeof(panels) / sizeof(panels[0]);

answered Dec 9, 2011 at 15:29

Luiz Carlos Querino Filho

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Denis · Accepted Answer · 2011-12-09 15:29:27Z

2

This is a C array of PanelSuperclass pointers, to get number of items, this C array can hold call the following:

sizeof(panels)/sizeof(panels[0])

answered Dec 9, 2011 at 15:29

Denis

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V1ru8 · Accepted Answer · 2011-12-09 15:26:48Z

0

You shouldn't use c style arrays for objective-c objects. Use NSArray instead.

answered Dec 9, 2011 at 15:26

V1ru8

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2 Comments

MusiGenesis Over a year ago

It didn't answer my question. If you edit and include an explanation of what the potential repercussions of this approach are, I'll undo.

V1ru8 Over a year ago

well ok that's true, but i won't change it and tell you how to do something that you shouldn't do. You'll end up with really really bad code!

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