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+2 A:

Syntax for #define is not Objective-C specific.

#define MY_FUNCTION(x) do { \
    if( (x) ) { \
        NSLog(@"Finalizing statement stmtToFinalize"); \
        if (sqlite3_finalize( (x) ) !=SQLITE_OK) \
                NSLog(@"An error occured while trying to finalize a statement stmtToFinalize: '%s'", sqlite3_errmsg(database)); \
        (x) = NULL; \
    } } while (0)

Text in NSLog() format string has not been changed.

mouviciel 2009-04-14 13:20:16

Thank you, is it possible to change the text inside a string? To replace stmtToFinalize with x.

Ilya 2009-04-14 13:22:13

Yes, you can replace the text 'stmtToFinalize' with the text 'x', but I doubt that it will add some value. Is there a way to get a string description of x? If yes I will update my answer.

mouviciel 2009-04-14 13:25:30

I would wrap the if in a do{..} while(0) to avoid an empty statement at the end. I mean you're not going to write MY_FUNCTION(stmt) without semi-colon ? Do you want to MY_FUNCTION(stmt) else { another_function();}

LB 2009-04-14 13:33:11

No, there is no way to get a string description of x. How can I replace stmtToFinalize with x? The following doesn't work: NSLog(@"Finalizing statement 'x'");

Ilya 2009-04-14 13:37:17

@LB: I didn't think of MY_FUNC(x) else ... Considering this, you are right. @Ilya: I'm afraid no simple solution exists for logging the actual name of x instead of a generic text, sorry.

mouviciel 2009-04-14 13:56:07

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