ios - How to get key/value pair from NSDictionary? -


I need some help with NSDictionary How can I get 1 pair, if I have a word then "id" The value of 

  NSDictionary * allCourses = [NSJSunification JSONObjectWithData: allCoursesData options: NSJSONReadingMutableContainers error: & amp; Error];   
 And it looks like:  
 NSD all courses   
 Thank you for your help.   
 
 
 shortest path:  
  NSNumber * number = all courses [ @ "Semaka"] [@ "id"];

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