Re: UPDATE keyword

ianh(at)co(dot)pierce(dot)wa(dot)us ("Ian Harding") schreef:
>True, true... but the next time I need the code to fire I would
>need ot remember that I had set it to 1 and set it to something else...

False, false, I've thought of that :-)

The statement says:

dummy = 1 - dummy

a) Initially, dummy == 0. Then dummy becomes 1 - 0 which equals 1.

b) So dummy == 1. Then dummy becomes 1 - 1 which equals 0.

c) Goto a.

Dummy changes value from 0->1 or 1->0 on every execution of the
statement.

If you don't believe it, you can also try dummy = -dummy, but then you
have to remember to initialize it to a non-zero value :-)

--
Vriendelijke groet,
René Pijlman <rpijlman(at)spamcop(dot)net>

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