On Tue, 12 Sep 2006 00:03:55 +0300, Georg Wrede <georg.wrede@nospam.org> wrote:

>And if really not, what in the world is
>
>    (cast(char*)null)[0..10]
>
>supposed to mean, or return???

Reminds me of the definition of the offsetof macro in C.

Cast a null pointer to the type of the struct, then take the address of the needed field, then cast to integer.

Sure, you're dealing with silly addresses - so long as you don't read or write to them, there's no error. And all you're doing is getting an offset, presumably to use in pointer arithmetic later on.

How you'd get a practical advantage from your example, I don't know, but so long as the language doesn't outlaw things on principle, you can often find useful tricks like that.

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