sub func { return (0, 1, 2) }

if (1 and do { ($result) = func($param); $result }) {
   print "1\n";
} else {
   print "0\n";
}

if (1 and ($result) = func($param)) {
   print "1\n";
} else {
   print "0\n";
}

##</code><code>##

0
1

##</code><code>##

($result) = func($param)

##</code><code>##

if (... and do { ($result) = func($param); 3 })

##</code><code>##

if (... and do { ($result) = func($param); $result })

##</code><code>##

if (... and $result = (func($param))[0])