How to create a Custom Xcode preprocessor macro

Question

I'm trying to create a preprocessor macro to simplify a bit of code that I'm continually using. The code just creates a dictionary and then posts a notification. Like so:

NSDictionary* dict = [NSDictionary dictionaryWithObject:@"This is a test"
                                                 forKey:@"debugMessage"];

[[NSNotificationCenter defaultCenter] postNotificationName:@"FLRDebugViewLog"
                                                    object:self
                                                  userInfo:dict];

I'd love to create a macro so that I could just type:

MBDebug(@"This is a test",self);

i.e. just passing in the message and object I want to post. How would I accomplish this?

I hadn't even considered a c function. I guess the only reason I was thinking macro was because I'm just expanding text, essentially, so a compile time macro seemed like it'd be most efficient. — Martin
– Martin, Commented Jul 14, 2012 at 13:32

Matt Hudson · Accepted Answer · 2012-07-13 00:19:04Z

2

This should work. :)

#define MBDebug(m,s) NSDictionary* dict = [NSDictionary dictionaryWithObject:m forKey:@"debugMessage"]; [[NSNotificationCenter defaultCenter] postNotificationName:@"FLRDebugViewLog" object:s userInfo:dict];

answered Jul 13, 2012 at 0:19

Matt Hudson

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1 Comment

Martin Over a year ago

Wow, I guess I should have figured that out myself. Thanks!

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