I am trying to be 32/64 bit "clean" in some new code that I am
writing. When I declare some integer values, say for named option
values as shown here, what is the type that the compiler assigns to
these values?
enum {
SomeOptionValue = 1,
AnotherOptionValue = 2,
};
The type matters to the construction of an NSLog statement. If the
type is NSInteger, then it seems the best way (for 32/64 bit
compatibility) to display its value is:
NSLog(@"SomeOptionValue = %ld", (long) SomeOptionValue);
Or so I conclude from reading:
[1] String Format Specifiers
http://developer.apple.com/documentation/Cocoa/Conceptual/Strings/Articles/formatSpecifiers.html
[2] 64-Bit Transition Guide: Type Specifiers
http://developer.apple.com/documentation/Cocoa/Conceptual/Cocoa64BitGuide/ConvertingExistingApp/chapter_4_section_3.html
Separately, from a space efficiency perspective, would it be better in
the case of having a small set of option values to force the type to
be an unsigned int? That is, if I have a method that takes such an
option, which of the following method signatures is nowadays preferred?
- (void) someMethodWithOption:(unsigned int)optionValue;
- (void) someMethodWithOption:(NSInteger)optionValue;
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