CODEWITHSUNDEEP
objective-cobjectboolean
Chris
Chris

Reputation: 7310

Objective C object property ->

I was trying to use a BOOL from an object in an if else comparison and I got a warning when I wrote player.isUp suggesting I use player->isUp

Why can't I use dot notation for object BOOLs? And what does -> mean??

Upvotes: 0

Views: 142

Answers (2)

justin
justin

Reputation: 104698

Why can't I use dot notation for object BOOLs?

You can, provided there is a property declared.

And what does -> mean??

This is direct member access to the ivar -- it does not use the getter/setter, nor does it use objc messaging. In this case: object->ivar, you will likely get an EXC_BAD_ACCESS if object is nil.

Upvotes: 3

UIAdam
UIAdam

Reputation: 5313

In order to use dot notation, you need to define isUp as a property of the class that your object belongs to. The arrow is standard C syntax for accessing a value from a struct pointer.

Upvotes: 3

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