What is the formatter %@ in Objective-c -

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what %@ means when it's using nslog? , when use that?

    nsdate* d  = [nsdate datewithtimeintervalsincenow:1201921383];     nslog(@"result: %@",d);

objective-c object, printed string returned descriptionwithlocale: if available, or description otherwise. works cftyperef objects, returning result of cfcopydescription function.

https://developer.apple.com/library/mac/documentation/cocoa/conceptual/strings/articles/formatspecifiers.html


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