From: "G.B." <bauhaus@futureapps.invalid>
Subject: Re: Bug in Ada - Latin 1 is not a subset of UTF-8
Date: Tue, 18 Oct 2016 19:35:32 +0200
Date: 2016-10-18T19:35:32+02:00 [thread overview]
Message-ID: <nu5mgi$7er$1@dont-email.me> (raw)
In-Reply-To: <nu5j0s$sch$1@gioia.aioe.org>
On 18.10.16 18:35, Dmitry A. Kazakov wrote:
> No invariant can make Latin-1 A-umlaut UTF-8 A-umlaut.
Who would ever want to do that?
Before I/O, there is nothing. UTF_8_String is for encoding
and decoding subprograms of Ada. For them to be successful,
a predicate could be used to express the set of values that
can be parsed. It so happens that its members are officially
said to be in encoded form.
To get a subset U from a set S, you apply a constraint
to S. That's not (easily) expressible in Ada in this case.
But if it is, with the help of a predicate, the we can
say that UTF_8_String is-a "constrained" String because
their sets are.
next prev parent reply other threads:[~2016-10-18 17:35 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-17 20:18 Bug in Ada - Latin 1 is not a subset of UTF-8 Lucretia
2016-10-17 20:57 ` Jacob Sparre Andersen
2016-10-18 5:44 ` J-P. Rosen
2016-10-17 23:25 ` G.B.
2016-10-18 7:41 ` Dmitry A. Kazakov
2016-10-18 8:23 ` G.B.
2016-10-18 8:45 ` Dmitry A. Kazakov
2016-10-18 10:09 ` G.B.
2016-10-18 12:24 ` Dmitry A. Kazakov
2016-10-18 15:10 ` G.B.
2016-10-18 16:35 ` Dmitry A. Kazakov
2016-10-18 17:35 ` G.B. [this message]
2016-10-18 20:03 ` Dmitry A. Kazakov
2016-10-19 8:15 ` G.B.
2016-10-19 8:25 ` G.B.
2016-10-19 8:49 ` Dmitry A. Kazakov
2016-10-19 14:20 ` G.B.
2016-10-19 16:20 ` Dmitry A. Kazakov
2016-10-20 0:31 ` Randy Brukardt
2016-10-20 7:36 ` Dmitry A. Kazakov
2016-10-21 12:28 ` G.B.
2016-10-21 16:13 ` Lucretia
2016-10-21 16:43 ` Dmitry A. Kazakov
2016-10-22 5:51 ` G.B.
2016-10-22 7:49 ` Dmitry A. Kazakov
2016-10-24 11:35 ` Luke A. Guest
2016-10-24 13:01 ` Dmitry A. Kazakov
2016-10-24 14:54 ` Luke A. Guest
2016-10-22 1:53 ` Randy Brukardt
2016-10-28 21:08 ` Shark8
replies disabled
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox