typedefs and structs

[linas]

On Tue, Nov 08, 2005 at 07:37:20PM -0500, Douglas McNaught was heard to remark:
> 
> Yeah, but if you're trying to read that code, you have to go look up
> the declaration to figure out whether it might affect 'foo' or not.
> And if you get it wrong, you get silent data corruption.

No, that is not what "pass by reference" means. You are thinking of
"const", maybe, or "pass by value"; this is neither.  The arg is not 
declared const, the subroutine can (and usually will) modify the contents 
of the structure, and so the caller will be holding a modified structure
when the callee returns (just like it would if a pointer was passed).

--linas