for maximum readibility and if you are doing this kind of conversion in more than one place, you can also create a new "booleanize" operator: 

sub booleanize ($) { shift ? 1 : 0 }

$x = booleanize $y;

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In reply to Re: Better expression for $x = !!$y||0 by salva
in thread Better expression for $x = !!$y||0 by borisz

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