// False and null are false.
print false and "bad"; // expect: false
print null and "bad"; // expect: null
print "" and "bad"; // expect: ""
print 0 and "bad"; // expect: 0

// Everything else is true.
print true and "ok"; // expect: ok
print "smth" and "ok"; // expect: ok
print 1 and "ok"; // expect: ok