Re: Creating a Constants.h file

FROM : Sherm Pendley
DATE : Tue Dec 21 16:51:34 2004

On Dec 21, 2004, at 3:40 AM, Kiel Gillard wrote:

> not using them in the header file, I may use 1 of the strings in the
> implementation file. However, when I compile my program, the compiler
> displays warnings telling me that I haven't used the strings.


... snip ...

> static NSString * MY_CONSTANT_STRING = @"I want to";
> static NSString * ANOTHER_CONSTANT_STRING = @" work for Apple";


These shouldn't be declared as static - that limits their visibility to
a single file. To make them truly constant, declare them like this in
Constants.h:

extern NSString * const MY_CONSTANT_STRING;
extern NSString * const ANOTHER_CONSTANT_STRING;

Then define their values in Constants.m:

NSString * const MY_CONSTANT_STRING = @"I want to";
NSString * const ANOTHER_CONSTANT_STRING = @"work for Apple";

sherm--

Cocoa programming in Perl: http://camelbones.sourceforge.net
Hire me! My resume: http://www.dot-app.org