isFunctionAvailable and Cocoa selectors

Does anyone know how to use system.isFunctionAvailable with a Cocoa function/selector?

Right now I’m comparing AppKitVersion to determine if features are available, but I’d rather use the above function. Just I’m not getting anywhere, as I cannot figure out how to specify a selector of a NSClass.

[quote=110666:@Sam Rowlands]Does anyone know how to use system.isFunctionAvailable with a Cocoa function/selector?

Right now I’m comparing AppKitVersion to determine if features are available, but I’d rather use the above function. Just I’m not getting anywhere, as I cannot figure out how to specify a selector of a NSClass.[/quote]

Use respondsToSelector:.

Hi Joe, thanks… How can I determine if that object exists in the first place?

What do you mean?

So lets say I want to know if I can use the sharing services on 10.8, for this I need to use the class “NSUserNotification”. So how can I test to see if that class exists?

use a function to lookup classes from the objc runtime. If it returns nil it’s not there.

Thanks Christian, this is what I did in the end.