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Newsgroups: comp.lang.ada
Date: Sun, 13 Dec 2020 14:29:43 -0800 (PST)
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Subject: Re: Advent of code day 12
From: John Perry <john.perry@usm.edu>
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Xref: reader02.eternal-september.org comp.lang.ada:60829
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On Sunday, December 13, 2020 at 12:36:00 PM UTC-6, Maxim Reznik wrote:
> Take a look at Ada 2005 Rationale:=20
> https://www.adaic.org/resources/add_content/standards/05rat/html/Rat-2-7.=
html=20
>=20
> The `overriding` specification is optional only to keep backward compatib=
ility with Ada 83/95. Usage of this keyword prevents you from errors, when =
you expect some function to override another from the parent type, but occa=
sionally it doesn't. For instance, if one day you rename 'Turn' on interfac=
e type to, say, `Rotate`, without `overriding` keyword the program still co=
mpiles, but won't work as expected. So `overriding` must be :)=20

I think you misunderstood my question: you didn't use `overriding` on `Turn=
`, only on `Move`. Why only on `Move`?