static NSString usage vs. inline NSString constants

Question

In Objective-C, my understanding is that the directive @\"foo\" defines a constant NSString. If I use @\"foo\" in multiple places, the same immutable NSString object is referenc

Answer 1

It's good practice to turn literals into constants because:

1. It helps avoid typos, like you said
2. If you want to change the constant, you only have to change it in one place

I prefer using static const NSString* static NSString* const because it's slightly safer than #define. I tend to avoid the preprocessor unless I really need it.