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Subject: Re: Q: discrete_subtype_definition: static only cases?
From: AdaMagica <christ-usch.grein@t-online.de>
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Xref: reader01.eternal-september.org comp.lang.ada:59005
Date: 2020-06-07T06:50:12-07:00
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Am Sonntag, 7. Juni 2020 15:14:49 UTC+2 schrieb gautier...@hotmail.com:
> ...plus, the keyword "type" is used and not "subtype". And /anon/ could itself be dynamic (an array of a named dynamic (sub)type).
> So basically types are static, except when they aren't ;-)

Nonono, types in Ada are always anonymous. What you name in a *type declaration* is the *first subtype*.

type My_Int is range 1 .. 10;

The anonymous type of this type declaration comprises the complete set of mathematical integers (only restricted by storage). Named numbers make use of this fact:

Big: constant := My_Int'Base'Last + 10**100;

Here, the "+" operator is that of My_Int'Base.