Is there a Facebook SDK for iOS?

Is any API for Facebook where we can check our wall and our home page wall and more we can post comment, post on friends wall, update our status etc. if we have au开发者_StackOverflow社区thorization details?

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Yes, there is an API!

See:

http://developers.facebook.com/docs/reference/api/

and:

https://github.com/facebook/facebook-ios-sdk