Besides ?? !! with out an else part is just &&.

--
Mark Biggar
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 -------------- Original message ----------------------
From: Damian Conway <[EMAIL PROTECTED]>
> Mark J. Reed concluded:
> 
> > So I prefer keeping a single construct, but perhaps the else-part
> > could be optional?
> 
> I hope not. The mandatory else-part is one of the most valuable features of 
> the ternary operator. It helps ensure that variables initialized with a 
> cascaded ternary actually do get initialized:
> 
>       $action =  $name eq 'Kirk'  ??  'fight'
>               !! $name eq 'Spock' ??  'think'
>               !! $shirt eq 'red'  ??  'die'
>               !!                      'stand';
> 
> The required-ness of the else-part makes cascaded ternaries a safer, more 
> robust choice than if-elsif-else chains in many cases.
> 
> Damian

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