$foo = $bar:$nuu;    # Currently meaningless
$foo = $bar'$nu;     # Ye-olde ' operator?
$foo = $bar<->$nu;   # Maybe?
$foo = $bar$nu;      # Or nothing at all?
$foo = $bar $nu;     # Implied?
$foo = $bar~$nu;     # Getting kind of crazy with overloading