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From: daelen@my-deja.com
Subject: attributes in generic procedure
Date: 1999/11/21
Message-ID: <818esd$t6l$1@nnrp1.deja.com>#1/1
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Date: 1999-11-21T00:00:00+00:00
List-Id: <comp.lang.ada>

I would like to create a generic procedure as shown below which will only be
used for scalar types. Does anybody have a hint how to accomplish this?

generic
   type A_Type is private;
procedure Update (Par : in out A_Type; Value : String);
procedure Update (Par : in out A_Type; Value : String) is
begin
   if Value = "+" then
      if Par = A_Type'Last then
         Par := A_Type'First;
      else
         Par := A_Type'Succ (Par);
      end if;
   elsif Value = "++" then
      Par := A_Type'Last;
   elsif Value = "-" then
      if Par = A_Type'First then
         Par := A_Type'Last;
      else
         Par := A_Type'Pred (Par);
      end if;
   elsif Value = "--" then
      Par := A_Type'First;
   elsif Value /= "" then
      Par := A_Type'Value (Value);
   end if;
end Update;


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