[nem-en] What about operator '!!' ?

[Paul Bludov]

A long time ago, nearly two lives before, I was a c++ coder.

And every time when I need to convert some integer (BOOL) or pointer (also 
iuteger) to boolean (bool), I've used operator '!!'.

For example, instead of:

return (SomeFunctionCall() != NULL);

I wrote

return !!SomeFunctionCall();

wich is more readable and much shorter.
According to google, it is quite common technique:
http://www.google.com/codesearch?q=!!

Moreover, the compiler seems to be aware of them and translate to simple 
'$expr != 0'

The implementation will be very similar to the '??' macro, except there will 
be only one expression.

Is it a good or bad idea to make such macro for Nemerle?