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Re: Can anyone spot why this menu doesn't change anything please.

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On 14 Aug, in article <1fc4a40252.martin@blueyonder.co.uk>,
   Martin Bazley <martin.bazley@blueyonder.co.uk> wrote:
> The following bytes were arranged on 14 Aug 2011 by Martin :

> > On 14 Aug, in article
> > <5cfafa70-0593-461f-a7e5-0acda11e9a84@s7g2000yqk.googlegroups.com>,
> >    Gazza <usenet@garethlock.com> wrote:
> > > Now I guess I'll have to find a bit of code that DOES clear the bit
> > > at <pos> in bitmask <mask> lol...
> >
> > You could try...
> >     mask% = mask% AND NOT (1<<pos%)

> Oh, dear, oh, dear, I did rather suspect this from your ...

Can I assume this is referring to Gazza? 

> ...unusually excessive use of entire procedures to perform trivial tasks
> like those above, and from vague memory of your other queries.

> I'm not going to explain the entire set of principles behind Boolean
> algebra to you - look it up yourself for a change, you won't get
> anywhere in programming if you have no idea how it works - but another
> change you should have made is replacing PROCdev_togglebit with this:

> mask% = mask% EOR (1<<pos%)

Yup. That is indeed much simpler and neater. I was just trying to show
the statement that was wrong, not optimise the code!

Martin A

-- 
Martin Avison 
Note that unfortunately this email address will become invalid
without notice if (when) any spam is received. 

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Thread

Can anyone spot why this menu doesn't change anything please. Gazza <usenet@garethlock.com> - 2011-08-13 07:01 -0700
  Re: Can anyone spot why this menu doesn't change anything please. Martin <News03@avisoft.f9.co.uk> - 2011-08-13 16:18 +0100
    Re: Can anyone spot why this menu doesn't change anything please. Gazza <usenet@garethlock.com> - 2011-08-13 09:47 -0700
      Re: Can anyone spot why this menu doesn't change anything please. Gazza <usenet@garethlock.com> - 2011-08-13 11:41 -0700
        Re: Can anyone spot why this menu doesn't change anything please. Martin <News03@avisoft.f9.co.uk> - 2011-08-13 23:35 +0100
          Re: Can anyone spot why this menu doesn't change anything please. Gazza <usenet@garethlock.com> - 2011-08-13 15:45 -0700
            Re: Can anyone spot why this menu doesn't change anything please. Martin <News03@avisoft.f9.co.uk> - 2011-08-14 10:54 +0100
              Re: Can anyone spot why this menu doesn't change anything please. Gazza <usenet@garethlock.com> - 2011-08-14 04:27 -0700
                Re: Can anyone spot why this menu doesn't change anything please. Martin <News03@avisoft.f9.co.uk> - 2011-08-14 12:43 +0100
                Re: Can anyone spot why this menu doesn't change anything please. Martin Bazley <martin.bazley@blueyonder.co.uk> - 2011-08-14 14:18 +0100
                Re: Can anyone spot why this menu doesn't change anything please. Martin <News03@avisoft.f9.co.uk> - 2011-08-14 15:24 +0100
                Re: Can anyone spot why this menu doesn't change anything please. "Barry Allen (news)" <evanallen@onetel.net.uk.invalid> - 2011-08-14 15:48 +0100
                Re: Can anyone spot why this menu doesn't change anything please. Gazza <usenet@garethlock.com> - 2011-08-14 08:46 -0700
                Re: Can anyone spot why this menu doesn't change anything please. Alan Wrigley <spamhater@keepyourfilthyspamtoyourself.co.uk> - 2011-08-14 18:36 +0100
                Re: Can anyone spot why this menu doesn't change anything please. Gazza <usenet@garethlock.com> - 2011-08-21 02:50 -0700
  Re: Can anyone spot why this menu doesn't change anything please. Martin Bazley <martin.bazley@blueyonder.co.uk> - 2011-08-13 18:00 +0100

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