Re: surprise data from Ada.Sequential_IO

["Jeffrey R. Carter" <spam.jrcarter.not@spam.not.acm.org>]

On 3/22/21 7:14 PM, John Perry wrote:
> 
> For Direct_IO I inferred this fact from ARM A.8.3, "the file is viewed as a set of elements occupying consecutive positions in linear order", but I don't see a similar indication for Sequential_IO. Is there a warning in the ARM about this?
> 
> (I do see the warning in Barnes' book, which I had consulted! and saw! and decided not to use Direct_IO as a result! but somehow read the same thing about Sequential_IO & either forgot or mis-concluded something. So I acknowledge my stupidity here.)

The only differences between Direct_IO and Sequential_IO are that Direct_IO 
allows random access and mixed input and output. In both cases the file contains 
a sequence of binary representations of values of a single type.

I don't really understand why Sequential_IO exists, since Direct_IO provides a 
superset of Sequential_IO's functionality.

-- 
Jeff Carter
"One day he told me he was a gynecologist. He
couldn't speak no foreign languages."
Take the Money and Run
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