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Newsgroups: comp.lang.ada
Date: Fri, 2 Jul 2021 13:57:30 -0700 (PDT)
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Subject: Re: Hi! How I can make _indexed_ stream file Input/Output ? Thanks.
From: Shark8 <onewingedshark@gmail.com>
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On Sunday, June 27, 2021 at 1:33:28 PM UTC-6, daniel wrote:
> How I can make _indexed_ stream file Input/Output ?=20
>=20
> For 'indexed' i mean manually setting file position:=20
> =3D> 'from' in $type'input() and=20
> =3D> 'to' in $type'output()=20
>=20
> Actually I use Ada.Streams.Stream_IO.=20
>=20
> My main need is examples.=20
>=20
> Thanks!=20
> Best Whishes,=20
> Dani.

Streams are a bit different than files; you see, streams are an abstraction=
 on input/output and therefore different than files. Consider, for example,=
 an output stream that controls a radio transmitter. There's no possible wa=
y to "unsend" the data: it's a write-only device.

If you're using Ada's standard library, with the XXX_IO packages, I believe=
 what you want is Ada.Direct_IO.