Objective C - when should "typedef" precede "enum", and when should an enum be named?

Posted by Scott Pendleton on Stack Overflow See other posts from Stack Overflow or by Scott Pendleton
Published on 2010-04-02T21:24:55Z Indexed on 2010/04/02 21:33 UTC
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In sample code, I have seen this:

typedef enum Ename { Bob, Mary, John} EmployeeName;

and this:

typedef enum {Bob, Mary, John} EmployeeName;

and this:

typedef enum {Bob, Mary, John};

but what compiled successfully for me was this:

enum {Bob, Mary, John};

I put that line in a .h file above the @interface line, and then when I #import that .h file into a different class's .m file, methods there can see the enum.

So, when are the other variants needed?

If I could name the enum something like EmployeeNames, and then, when I type "EmployeeNames" followed by a ".", it would be nice if a list pops up showing what the enum choices are.

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