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From: "Martin Dowie" <martin.dowie@baesystems.com>
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Subject: Re: Ada Quality and Style book discussion ("_Type" suffix)
Date: Thu, 17 Nov 2005 10:51:43 -0000
Organization: BAE SYSTEMS
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Date: 2005-11-17T10:53:01+00:00
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Anonymous Coward wrote:
>    package Name_Collisions is
>
>       type Day is (Monday, Tuesday,  Wednesday, Thursday,
>                    Friday, Saturday, Sunday);
>
>       type Meters is new Float;
>
>       type Feet is new Float;
>
>       --Oops, can't use these enums, since they were hijacked for
>       --numerical specs.
>       --
>       type Length is (Feet, Meters, Miles);
>
>       --Oops, can't use these names either, since "day" was hijacked.
>       --
>       type Timestamp_Component is (Month, Day, Year, Hour, Minute);
>
>       type Speed is new Float;
>
>       --No can do.  "speed" hijacked by type definition.
>       --
>       Speed : Speed;
>
>    end Name_Collisions;

But why not use scoping to solve this? I always separate type declarations
from object declarations anyway, so I never see these sorts of problems.
Also, I don't think that "Speed" /is/ a good type name e.g.

package SI is
   type Meters_Per_Second is ...;
end SI;

package App is
   Speed : SI.Meters_Per_Second;
   ...
end App;