OpenEuphoria

2. Re: And/ Or in One

• Posted by Juergen Luethje <j.lue at gmx.?e> Jul 07, 2007
• 553 views

Andy wrote:

> Is there a command in Euphoria that allows for the and/or command to be one.
> 
> Like saying if event here then attack him and/or her. I hope I am making
> enough
> senese. Its it like xor or something. I'm sorry, if I'm confusing, but I'm
> trying
> to explain it as well.

Euphoria has the following built-in logical operators:
   and, or, xor, not
see http://rapideuphoria.com/refman_2.htm#24

I don't know what your "and/or" should mean logically.
Maybe after reading this page
   http://en.wikipedia.org/wiki/Truth_table
you can tell more precisely what you are looking for.

Regards,
   Juergen

4. Re: And/ Or in One

• Posted by Mike <vulcan at win.co?nz> Jul 08, 2007
• 534 views

Andy wrote:> 
> Is there a command in Euphoria that allows for the and/or command to be one.> 
> Like saying if event here then attack him and/or her. I hope I am making
> enough
> senese. Its it like xor or something. I'm sorry, if I'm confusing, but I'm
> trying
> to explain it as well.

Andy,

As you (should) know OR has the same effect as our english expression "either
or".
In other words if one or both elements are True then proceed..otherwise don't.
Eg,

1 or 0 -- TRUE
1 or 1 -- TRUE
0 or 1 -- TRUE
0 or 0 -- FALSE

Why don't construct a Truth Table (like this one) to explain what you are after?

regards,
Mike

6. Re: And/ Or in One

• Posted by Pete Lomax <petelomax at blu?yonder.co.uk> Jul 08, 2007
• 520 views

Mike wrote:
> Oops,
> 
> or is "and or"
> xor is "either or"
> 
> sorry.
Err:
or is "either"
xor is "one but not both"

sorry. 

Pete

8. Re: And/ Or in One

• Posted by CChris <christian.cuvier at a?riculture.gouv.fr> Jul 08, 2007
• 531 views

Andy wrote:
> 
> Is there a command in Euphoria that allows for the and/or command to be one.
> 
> Like saying if event here then attack him and/or her. I hope I am making
> enough
> senese. Its it like xor or something. I'm sorry, if I'm confusing, but I'm
> trying
> to explain it as well.


What you want to achieve appears to be done by:

if he exist ehtn
   attack him
end if
if she exist then
   attack her
end if
</eucode
The only potential issue there is, when both enemies are present, "he" is always
attacked before "he", while you'd like some other logic to apply.
If so, no operator will do all the work, you are going to code a little bit
more.
If not, then the above looks good enough, doesn't it?

CChris }}}

10. Re: And/ Or in One

• Posted by Ricardo Forno <ricardoforno at tutopia.c?m> Jul 09, 2007
• 542 views

Juergen Luethje wrote:
> 
> Andy wrote:
> 
> > Is there a command in Euphoria that allows for the and/or command to be one.
> > 
> > Like saying if event here then attack him and/or her. I hope I am making
> > enough
> > senese. Its it like xor or something. I'm sorry, if I'm confusing, but I'm
> > trying
> > to explain it as well.
> 
> Euphoria has the following built-in logical operators:
>    and, or, xor, not
> see <a
> href="http://rapideuphoria.com/refman_2.htm#24">http://rapideuphoria.com/refman_2.htm#24</a>
> 
> I don't know what your "and/or" should mean logically.
> Maybe after reading this page
>    <a
>    href="http://en.wikipedia.org/wiki/Truth_table">http://en.wikipedia.org/wiki/Truth_table</a>
> you can tell more precisely what you are looking for.
> 
> Regards,
>    Juergen

Hi Juergen.
Euphoria has another built-in (hidden) logical operator when applied to
Boolean data, although it does not have a bit level counterpart.
It is "=", which amounts to "not xor".
"!=" can also replace xor if used with Boolean data.
Regards.