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    SubjectRe: PATCH: type safe(r) list_entry repacement: generic_out_cast
    On Tue, Jul 23, 2002 at 09:28:26PM +1000, Neil Brown wrote:
    >
    ...
    > Why "out_cast"???
    >
    > Well OO people would probably call it a "down cast" as you are
    > effectively casting from a more-general type to a less-general (more
    > specific) type that is there-fore lower on the type latice.
    > So maybe it should be "generic_down_cast".
    > But seeing that one is casting from an embeded internal structure to a
    > containing external structure, "out_cast" seemed a little easier to
    > intuitively understand.

    This is one of the type issues that C++ would solve nicely - not because
    of OO, but because of parameterized types. Completely removing the need
    to do any kind of casting (in this situation), and allowing the compiler
    to inline based on the actual use of types in each specific
    instantiation of a function such as a list utility funciton. Type safe
    code that runs faster, yay!.

    Yes, I know, it doesn't help us one bit here, because they'll be selling
    snow-cones in hell before the kernel is rewritten in C++. And there are
    many good reasons why it is like that.

    I'm happy to see someone taking an initiative to improve type safety (as
    much as the language allows). And the above was just pointed out
    because of the occational "why not C++" versus "no OO sucks" (as if C++
    was just OO) debates.

    Cheers,

    --
    ................................................................
    : jakob@unthought.net : And I see the elder races, :
    :.........................: putrid forms of man :
    : Jakob Østergaard : See him rise and claim the earth, :
    : OZ9ABN : his downfall is at hand. :
    :.........................:............{Konkhra}...............:
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