At 05:51 PM 3/19/98 -0500, Mike Kamrad wrote:
>  Does anyone with a Rationale for Ada83 (mine's packed away)
>or a good memory tell me why continue wasn't included in the language?

    It is so far down the list of syntactic sugar that it got lost.  The
typical continue use in C looks in Ada like:

    loop
      case X is
        when A =>...
      end case;
    end loop;

    A change to the language to permit the loop and case statement to be
more closely bound would have been nice, in fact I sometimes write:

    loop case X is
    ...
    end case; end loop;

    And I'd do it more often if I could write that last line as:

    end loop case;

    But I'm not about to request THAT language extension.  In Ada continue
semantics only occurs when you need to prematurely leave the logic for a
particular choice, and want to stay in the processing loop:

    ...
    when D =>
      Do_Some_Processing;
      if Condition
      then
        Error_Message;
        continue;
      end if;
      More_Processing;
    when E => ...

     and of course what we really write in Ada is:
    ...
    when D =>
      Do_Some_Processing;
      if Condition
      then
        Error_Message;
      else
        More_Processing;
      end if;
    when E => ...

    (Or possibly "if not Condition"  but I like to put the (shorter)error
cases first.)  In any case, I have yet to use a goto or even want a
continue in such code.

                                        Robert I. Eachus

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