[fpc-pascal] Re: type definitions etc
listmember
listmember at letterboxes.org
Sun May 29 09:50:03 CEST 2005
Jeff Pohlmeyer wrote:
> To clarify, you can actually have many additional types between
> the pointer type and the record definition, as long as you
> don't introduce another section keyword that "turns off"
> the current "type" section.
>
> For instance, this will work:
>
> type
>
> pMyRec = ^tMyRec; // forward declaration
>
> MyInt = integer;
> MyArray = array[0..255] of char;
>
> { Hundreds more typedef's could go here }
>
> tMyRec = Record // actual definition
> data:pointer;
> next:pMyRec;
> end;
>
>
> But the next example will NOT work, because the
> additional "type" keyword separates the two types:
>
> type pMyRec = ^tMyRec;
> type tMyRec = Record
> data:pointer;
> next:pMyRec;
> end;
I can see what you mean, but I fail see the wisdom
behind the restriction.
Why should it matter if we used 2 'type' keywords
instead of one --we are, after all, in the same
declaration sestion of the same unit... Why should
it matter?
Cheers,
Ray
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