[sr-dev] test if $var has been give a value

look at this:

$var(test) = "foo"; if ($var(test)) { xlog("L_INFO", "EXTR: $var(test) has value\n"); } else { xlog("L_INFO", "EXTR: $var(test) does NOT have value\n"); }

$var(test) = 1; if ($var(test)) { xlog("L_INFO", "EXTR: $var(test) has value\n"); } else { xlog("L_INFO", "EXTR: $var(test) does NOT have value\n"); }

prints

Sep 2 14:17:23 localhost /usr/sbin/sip-router[14295]: INFO: EXTR: foo does NOT have value Sep 2 14:17:23 localhost /usr/sbin/sip-router[14295]: INFO: EXTR: 1 has value

this is not good and makes programming VERY error prone.

-- juha