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@ucnv
ucnv / canvas-delaunay-triangulation.html
Created December 9, 2009 01:51
<html>
<head><title>Canvas Delaunay Triangulation</title></head>
<body></body>
<script type="text/javascript">
var img = new Image();
img.onload = init;
img.src = './bg_10.jpg';
var display, source;
var points = [], drew = [];
@lxneng
lxneng / gist:741932
Created December 15, 2010 13:21
install PostgreSQL 9 in Mac OSX via Homebrew
install PostgreSQL 9 in Mac OSX via Homebrew
Mac OS X Snow Leopard
System Version: Mac OS X 10.6.5
Kernel Version: Darwin 10.5.0
Install notes for PostgreSQL 9.0.1 install using Homebrew:
sh-3.2# brew install postgresql
@spig
spig / validate_barcode.js
Last active May 10, 2024 15:10
Validate a barcode UPC-E, UPC-A, EAN, EAN-14, SSCC
// checksum calculation for GTIN-8, GTIN-12, GTIN-13, GTIN-14, and SSCC
// based on http://www.gs1.org/barcodes/support/check_digit_calculator
function isValidBarcode(barcode) {
// check length
if (barcode.length < 8 || barcode.length > 18 ||
(barcode.length != 8 && barcode.length != 12 &&
barcode.length != 13 && barcode.length != 14 &&
barcode.length != 18)) {
return false;
}
@ghiden
ghiden / nodejs_decode_sample.js
Created June 29, 2011 05:11
decode a base64 encoded image file with node.js
var fs = require('fs'),
decode64 = require('base64').decode;
var data = fs.readFileSync('./encode.png', 'base64');
var buffer = new Buffer(data, 'base64');
fs.writeFileSync('./decode.png', decode64(buffer), 'binary')
@mbijon
mbijon / xss_clean.php
Last active February 17, 2026 23:16
XSS filtering in PHP (cleans various UTF encodings & nested exploits)
<?php
/*
* XSS filter, recursively handles HTML tags & UTF encoding
* Optionally handles base64 encoding
*
* ***DEPRECATION RECOMMENDED*** Not updated or maintained since 2011
* A MAINTAINED & BETTER ALTERNATIVE => kses
* https://github.com/RichardVasquez/kses/
*
* This was built from numerous sources
@ryanflorence
ryanflorence / universal-module.js
Created September 6, 2011 18:10
Universal JavaScript Module, supports AMD (RequireJS), Node.js, and the browser.
(function (name, definition){
if (typeof define === 'function'){ // AMD
define(definition);
} else if (typeof module !== 'undefined' && module.exports) { // Node.js
module.exports = definition();
} else { // Browser
var theModule = definition(), global = this, old = global[name];
theModule.noConflict = function () {
global[name] = old;
return theModule;
@dskanth
dskanth / app.js
Created May 8, 2012 10:56
Server file for Private chat using node.js and socket.io
var app = require('express').createServer()
var io = require('socket.io').listen(app);
var fs = require('fs');
app.listen(8008);
// routing
app.get('/', function (req, res) {
res.sendfile(__dirname + '/chat.html');
});
@crtr0
crtr0 / client.js
Created June 8, 2012 17:02
A simple example of setting-up dynamic "rooms" for socket.io clients to join
// set-up a connection between the client and the server
var socket = io.connect();
// let's assume that the client page, once rendered, knows what room it wants to join
var room = "abc123";
socket.on('connect', function() {
// Connected, let's sign-up for to receive messages for this room
socket.emit('room', room);
});
@earthgecko
earthgecko / bash.generate.random.alphanumeric.string.sh
Last active April 25, 2026 07:50
shell/bash generate random alphanumeric string
#!/bin/bash
# bash generate random alphanumeric string
#
# bash generate random 32 character alphanumeric string (upper and lowercase) and
NEW_UUID=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1)
# bash generate random 32 character alphanumeric string (lowercase only)
cat /dev/urandom | tr -dc 'a-z0-9' | fold -w 32 | head -n 1
@miloplacencia
miloplacencia / lazyload.js
Created October 22, 2012 14:39
lazyload.js (c) Lorenzo Giuliani
/* lazyload.js (c) Lorenzo Giuliani
* MIT License (http://www.opensource.org/licenses/mit-license.html)
*
* expects a list of:
* `<img src="blank.gif" data-src="my_image.png" width="600" height="400" class="lazy">`
*/
!function(window){
var $q = function(q, res){
if (document.querySelectorAll) {