What does this small piece of code block means ?

Discussion in 'iOS Programming' started by Vishwas Gagrani, Oct 3, 2012.

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  1. Vishwas Gagrani, Oct 3, 2012
    Last edited by a moderator: Oct 3, 2012

    Vishwas Gagrani macrumors newbie

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    Sep 26, 2012
    #1
    Code:
    -(NSString*)myField{
return myField; 
}
    What's what here ?

    NSString seems to be type of myField.

    But where is the function name ? What's the myField doing after (NSString*). What's the * after NSString. Is * similar to "Pass by Value", "Pass by Reference" as in C,C++?


    thanks
    V.
     
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  2. dejo, Oct 3, 2012

    dejo Moderator

    dejo

    Staff Member

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    #2
    This can all be answered if you know the fundamentals of Objective-C. What resources are you using to educate yourself on the basics?
     
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  3. ArtOfWarfare, Oct 3, 2012

    ArtOfWarfare macrumors G3

    ArtOfWarfare

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    #3
    It's a method (not a function.) Its return type is a pointer to an NSString. The method name is myField, and it returns the instance variable, also named myField. This method is a getter for the instance variable myField.

    Having a getter like this isn't very common anymore with properties, which can automagically create getters and setters for you, having been introduced in Obj-C 2.0.
     
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  4. Vishwas Gagrani, Oct 5, 2012

    Vishwas Gagrani thread starter macrumors newbie

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    Sep 26, 2012
    #4
    Thanks ArtOfWarfare

    It's an ebook edition of Head First.
     
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  5. dejo, Oct 5, 2012

    dejo Moderator

    dejo

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    #5
    Care to be more specific? Courtesy requests that you provide title, author, edition, and chapter and page number, if appropriate.
     
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