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Editorial Team
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Asked: 2026-05-22T18:47:27+00:00

I’m getting an Implicit declaration of function ‘pathInDocumentDirectory’ warning for this line of code

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I’m getting an “Implicit declaration of function ‘pathInDocumentDirectory’” warning for this line of code while trying to develop my first iPhone app:

NSString *imagePath = pathInDocumentDirectory(s);

Strangely, I can’t find any good information on what to do about this. Does anyone know how to get rid of the warning? Thanks!

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1 Answer

  1. Editorial Team

    If that is an inline function, move the declaration to the top of the implementation file (before anything uses it).

    If it’s a method you’ve written it should be an objective-c method…

    -(NSString *)pathInDocumentDirectory:(NSString *)value {

}

    Then you use…

    NSString *path = [self pathInDocumentsDirectory:aValue];

    Don’t forget to declare the method in either the header or a private category in the implementation file.

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