One rather cool feature of JavaScript is that you can access a method's arguments from a special variable conveniently named ...arguments. Quite annoyingly though, the arguments variable is not a real array. Sure, you can get the arguments length or iterate through it's members. But you cannot call other Array methods like .push(), .shift() etc..
Fear not, the following one-liner converts the arguments variable to a real Array:
var args = Array.prototype.splice.call(arguments, 0);
The Array .splice() method is injected into the special arguments object to extract it's members and return a new Array.
There are many reasons to disable ipv6 on Ubuntu (If you don't really need it). Among others:
Some users report a noticeable improvement in network performance.
It's a workaround for a serious Tomcat6 bug
After a short Google session I found many (slightly different) 'solutions'. Nothing worked though. Eventually, I came across a solution that did the trick:
$ vi /etc/modprobe.d/blacklist
append the following line:
blacklist ipv6
save the file and restart your machine! You can verify that ipv6 is actually disabled using the following command:
$ ip a | grep inet6
If you see not output this little exercise was successful. Go make yourself a cup of coffee!
BTW, I tried this on Ubuntu 8.10
