"Andre Engels" <andreeng...@gmail.com> wrote
Why not '!' for not, instead of '~'? I mean, '!' is used in logic,
in many languages and even in python (!=). On the other hand,
I had never encountered '~' meaning not.
Although ! is indeed usual in computer languages, I disagree when
you
say it is used in logic. There to my knowledge the standard is ¬,
with
~ being used if one wants to remain within easily-accessible
character
sets.
And both statements are correct. The symbols directly trace back
to C where ! meant logical not and ~ meant bitwise not. The latter
symbol being chosen because it was sometimes used in maths
for not... (Why they chose ! for logical not I don't know!)
Python (and many other languages since) simply passes on its C
heritage
--
Alan Gauld
Author of the Learn to Program web site
http://www.freenetpages.co.uk/hp/alan.gauld
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