Essential Books

Return values

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When you want to return a value from a method, you put the type you want to return in the first set of parentheses. 

- (NSString)returnHello {
  return @"Hello World";
}

The value you want to return goes after the return keyword;

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Methods:
* Methods
* Class methods
* Method parameters
* Create a basic method
* Return values
* Calling methods
* Instance methods
* Pass by value parameter passing
* Pass by reference parameter passing
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