Saturday, June 28, 2008

Making Quicktime work in Ubuntu

There is a common issue with quicktime videostreams under linux. So this is a simple trick how you can make it working under the Ubuntu linux.

1) Uninstall all the video plugins you have got with your firefox installation (for example the vlc plugin)

2) Install the mplayer package and the quicktime extentions for it.

3) Install the mozilla-mplayer plugin

4) Reinstall firefox.

That's it. Go to, it should get working now

Monday, June 16, 2008

JavaScript Diff Function Implementation

Since I have not ever done it before, I have found it was not obvious to me how to create a lists diff function in JavaScript, so I feel like should public the solution.

function diff(first, second) {
var diff = [], start_k = 0;

// calculating the diff
for (var i=0; i < first.length; i++) {
var same_found = false;
var pluses = [];
for (var k=start_k; k < second.length; k++) {
if (first[i] == second[k]) {
same_found = second[k];
start_k = k+1;
} else {
if (same_found) {
for (var j=0; j < pluses.length; j++) {
diff.push({plus: pluses[j]});
diff.push({same: same_found});
} else {
diff.push({minus: first[i]});

// pushing down the trailing elements
for (var k=start_k; k < second.length; k++) {
diff.push({plus: second[k]});

return diff;

this function will return a sequention of hashes with keys 'minus', 'plus', 'same' which represents the differences and similarities between the two incomming arrays