How to change value defined constants in Objective C

Question

I've declared constant as follows:

#define OPENIN_DIR_PATH_FORMAT_STRING L"%@"

Now how should I change the value for OPENIN_DIR_PATH_FORMAT_STRING here with %@

score 2 · Answer 1 · edited May 23 '17 at 11:48

2

#define is not making constant it's the macro definition. If you want to change this macro you might do #undef and #define it again. But I strongly discourage you from messing around with macros :)

See This for more details

edited May 23 '17 at 11:48

Community

1
1

answered Feb 26 '14 at 20:13

Kissiel

1,865
1
12
11

In following example how to use value of str in OPENIN_DIR_PATH_FORMAT_STRING programmatically. e.g. NSString *str = @“/path/dir”; #define OPENIN_DIR_PATH_FORMAT_STRING L"str" ; – Vishwanath Deshmukh Feb 26 '14 at 20:21
You cannot use *value* of something in macro. Macros are processed (replaced) before compilation. – Kissiel Feb 26 '14 at 20:24
So what is substitute for Define in objective C? – Vishwanath Deshmukh Feb 26 '14 at 20:25
NSString *const MyConst = @"Constant string". http://stackoverflow.com/questions/538996/constants-in-objective-c – Kissiel Feb 26 '14 at 20:28

How to change value defined constants in Objective C

1 Answers1