Re: reset boolean.

[adam@irvine.com (Adam Beneschan)]

Neil O'Brien <obrien@east.thomsoft.com> writes:
 >
 >On Sunday, August 18, 1996, Charlie_Brown wrote...
 >> 	Hi to all,
 >> 		I have a question regarding a boolean statement. 
 >> What I want to do is reset the statement to neither false nor true.
 >> Is it possible?
 >> 	If anyone has an idea please help me out.
 >> Thanks in advance.
 >> Lyndon. 
 >> 
 >
 >It is a truth value, it can only have two possible settings true or false,
 >but you could declare your own enumeration type for example
 >
 >my_bool is (true, false, neutral)
 >
 >and use that instead - to be honest it seems a bit of a bizarre thing to
 >want to do, perhaps if you explained why you want it someone might be able
 >to suggest a better way.
 >

I've never understood these three-way Booleans.  To be complete,
shouldn't there be a lot more values in the enumeration type?  E.g.:

   type My_Bool is (True, False, Maybe, True_And_False, It_Depends,
                    Dont_Know, Dont_Care, None_Of_Your_Business,
                    All_Of_The_Above);

:)

                                -- Adam