From: Mark Hubbart <discordantus@...>
Date: 2005-07-17T03:47:17+09:00
Subject: Re: `not' in parameter lists

On 7/16/05, Daniel Brockman <daniel@brockman.se> wrote:
> I just noticed that all of the following give syntax errors:
> 
>  * assert not foo
> 
>  * assert not(foo)
> 
>  * assert(not foo)
> 
>  * assert(not(foo))
> 
> I would like them all to be equivalent to the following:
> 
>    assert !foo
> 
> At the _very_ least, the fully-bracketed one should work,
> but it would be great if they all worked.

First, remember that 'not' is a keyword, not a method. So it won't
work as a method call.

However, it's true that you can't use it directly in parameter lists.
You can get around it like this:
  assert((not foo))
The extra parens make the 'not foo' evaluate separately from the
parameter list, and it works.

cheers,
Mark