How to print Boolean flag in NSLog

Question

Is there a way to print value of Boolean flag in NSLog

User · Answer

We can check by Four ways

The first way is

BOOL flagWayOne = TRUE; 
NSLog(@"The flagWayOne result is - %@",flagWayOne ? @"TRUE":@"FALSE");

The second way is

BOOL flagWayTwo = YES; 
NSLog(@"The flagWayTwo result is - %@",flagWayTwo ? @"YES":@"NO");

The third way is

BOOL flagWayThree = 1;
NSLog(@"The flagWayThree result is - %d",flagWayThree ? 1:0);

The fourth way is

BOOL flagWayFour = FALSE; // You can set YES or NO here.Because TRUE = YES,FALSE = NO and also 1 is equal to YES,TRUE and 0 is equal to FALSE,NO whatever you want set here.
NSLog(@"The flagWayFour result is - %s",flagWayFour ? YES:NO);

User · Answer

In Swift  you can simply print a boolean value and it will be displayed as true or false   let flag   true print flag    true

User · Answer

NSArray  array1    NSArray arrayWithObjects   todd1     todd2     todd3   nil   bool objectMembership    array1 containsObject   todd1    NSLog    d  objectMembership       prints 1 or 0

User · Answer

Here is how you can do it   BOOL flag   NO  NSLog flag     YES      NO

User · Answer

Here s how I do it   BOOL flag   YES  NSLog flag     Yes      No         is the ternary conditional operator of the form   condition   result if true   result if false   Substitute actual log strings accordingly where appropriate

User · Answer

assuming b is BOOL  ternary operator helps us in any language  NSLog   result is        b  YES    YES    NO

User · Answer

Apple s FixIt supplied  hhd  which correctly gave me the value of my BOOL

User · Answer

While this is not a direct answer to Devang s question I believe that the below macro can be very helpful to people looking to log BOOLs  This will log out the value of the bool as well as automatically labeling it with the name of the variable    define LogBool BOOLVARIABLE  NSLog    s       BOOLVARIABLE  BOOLVARIABLE     YES      NO     BOOL success   NO  LogBool success      Prints out  success  NO  to the console  success   YES  LogBool success      Prints out  success  YES  to the console

User · Answer

d  0 is FALSE  1 is TRUE   BOOL b   NSLog   Bool value   d  b     or   NSLog   bool  s   b    true     false      On the bases of data type    changes as follows  For Strings you use    For int  you use  i For float and double you use  f

User · Answer

Note that in Swift  you can just do  let testBool  Bool   true NSLog  testBool        testBool description    This will log testBool   true

User · Answer

Booleans are nothing but integers only  they are just type casted values like     typedef signed char     BOOL     define YES  BOOL 1  define NO  BOOL 0  BOOL value   YES   NSLog   Bool value   d  value     If output is 1 YES otherwise NO

[ios] How to print Boolean flag in NSLog?

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