CODEWITHSUNDEEP
objective-cxcodeautomatic-ref-counting
Novice User
Novice User

Reputation: 3824

Print value of a NSString which is set inside a autoreleasepool

I'm trying to NSLog value of a NSString which is references inside a @autoreleasepool, but XCode complains of Format specifies type 'char *' but the argument has type 'NSString *__autoreleasing **'

anotherFunction {

NSString *myString = nil;
 compute =  [self checkForError:data myString:&myString];
}


- (NSDictionary *)checkForError:(NSData *)data myString:(NSString **)myString {

    @autoreleasepool { 
            *myString = nil;
            @try {
                NSMutableString *myString1 = [[NSMutableString alloc] init];
                // do something on myString1
                  *myString = myString1;
  ------>              NSLog(@"mutableString is:%s", myString );  // Format specifies type 'char *' but the argument has type 'NSString *__autoreleasing **'
            }

    }

    return myDictionary;
}

Upvotes: 0

Views: 67

Answers (1)

bbum
bbum

Reputation: 162722

(I totally misread the question).

So, yeah-- use '%@' for object types. Pass *myString to NSLog() to convert an NSString ** to an NSString *.

Note that you should probably be using NSError to encapsulate the errors and you should check to see if your pass by reference parameter is NULL before assigning to it.

See:

https://nshipster.com/nserror/

Upvotes: 1

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