Using NSLog for debugging

Question

I have the following code snippet in my Xcode   NSString  digit   sender titlelabel  text   NSLog  digit      I tried to build the application and am getting the following warning message for the line NSLog  digit     Warning  Format not a string literal and no format arguments   Can you advise me how I can resolve this warning message  What does the message actually mean

User · Answer

type   BOOL DATA  YES NO  OR 1 0   BOOL dtBool   0     OR  BOOL dtBool   NO  NSLog dtBool     Yes      No      OUTPUT   NO  type   Long  long aLong   2015  NSLog   Display Long   ld     aLong     OUTPUT   Display Long  2015   long long veryLong   20152015  NSLog   Display very Long   lld   veryLong     OUTPUT   Display very Long  20152015  type   String  NSString  aString     A string   NSLog   Display string       aString     OUTPUT   Display String  a String   type   Float  float aFloat   5 34245  NSLog   Display Float   F   aFloat     OUTPUT   isplay Float  5 342450  type   Integer  int aInteger   3      NSLog   Display Integer   i   aInteger     OUTPUT   Display Integer  3  NSLog    nDisplay String      n n Display Float   f  n n Display Integer   i   aString  aFloat  aInteger     OUTPUT    String  a String   Display Float  5 342450   Display Integer  3  http   luterr blogspot sg 2015 04 example-code-nslog-console-commands-to html

User · Answer

NSLog        digit     what is shown in console

User · Answer

Try this piece of code   NSString  digit     sender titlelabel  text   NSLog        digit     The message means that you have incorrect syntax for using the digit variable  If you re not sending it any message - you don t need any brackets

User · Answer

The proper way of using NSLog  as the warning tries to explain  is the use of a formatter  instead of passing in a literal   Instead of   NSString  digit     sender titlelabel  text   NSLog digit     Use   NSString  digit     sender titlelabel  text   NSLog       digit     It will still work doing that first way  but doing it this way will get rid of the warning

User · Answer

Why do you have the brackets around digit  It should be  NSLog       digit    You re also missing an   in the first line     NSString  digit     sender titlelabel  text

User · Answer

Use NSLog   like this   NSLog   The code runs through here       Or like this - with placeholders   float aFloat   5 34245  NSLog   This is my float   f  n nAnd here again    2f   aFloat  aFloat     In NSLog   you can use it like    id stringWithFormat  NSString   format       float aFloat   5 34245  NSString  aString    NSString stringWithFormat   This is my float   f  n nAnd here again    2f   aFloat  aFloat     You can add other placeholders  too   float aFloat   5 34245  int aInteger   3  NSString  aString     A string   NSLog   This is my float   f  n nAnd here is my integer   i  n nAnd finally my string       aFloat  aInteger  aString

[objective-c] Using NSLog for debugging

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