Re: S'Write and How To Count Bytes

[Marin David Condic <mcondic.nospam@acm.org>]

"Dr. Joachim Schr�er" wrote:

> The 'read, 'write attributes are for constrained types.
> For unconstrained types (including tagged types/classwide types)
> there exist the 'input, 'output attributes. Note, that 'input
> is a function. If you want to overwrite 'input, 'output you just
> have to overwrite 'read, 'write cause they are used by the former.

I've used the 'Input and 'Output in the process of saving and reloading things
from a file. It works nicely. However, in this case, I can't have all the dope
information in the output. See some of the other posts in this thread where I
explain it in a little more detail. Also, even with the 'Input and 'Output, you
don't seem to have any means of determining in advance how big a stream of bytes
you will produce from the operation. I don't see an obvious answer and perhaps
no good one exists. Probably you would have to convert the data to get the size,
then convert it again to get the size into the output.

MDC
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