Arguments by reference in Objective-C

Question

I\'m trying to pass an NSString by reference but it doesn\'t work.

This is the function:

+(void)fileName:(NSString *) file
{
    file =          


        

Answer 1

Try this

+(void)filename:(NSString **)file {
     *file=@"folder_b";
}

and send the file as &file like:

NSString *file;
[function fileName:&file];
nslog(@"%@",file);

hope this will work.