CODEWITHSUNDEEP
objective-ccore-foundation
nonopolarity
nonopolarity

Reputation: 151036

NSString is exactly the same as CFString?

O'Reilly's Programming iOS 5 says (maybe in a looser sense), that "an NSString is a CFString". But is it true that at least NSString * will point to some memory chunk with an isa, while CFStringRef probably does not?

Upvotes: 8

Views: 2190

Answers (1)

trojanfoe
trojanfoe

Reputation: 122391

Not exactly the same; they are Toll-Free Bridged. This Apple Doc should explain in more detail.

Here is even more detail from iOS 5 Programming Pushing The Limits on Google Books.

Upvotes: 9

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