TollFreeBridging
Crowd-sourced documentation and tutorials by the Cocoa developer community
TollFreeBridging is what allows you to take CoreFoundation types and typecast them to Cocoa types (and vice versa).
So, if you have to call a CoreFoundation function that takes a CFString, but you have an NSString, you can just pass it your NSString with:
CFStringRef myCFString = (CFStringRef)someNSString;
And if you need to get an NSString from a CFString, you can do this:
NSString myNSString = (NSString)someCFString;
see also: HowToCreateTollFreeBridgedClass
See which classes are TollFreeBridged.
