NV

a=['first', 'last'];
a[-1] == null;
a[-1] = a[a.length-1];
a[-1] == 'last'

NV

result = re.search(r"#[a-f0-9]{3}", 'Roses are #f00')
result.group(0) == '#f00' # True
result[0] # Damn! TypeError: '_sre.SRE_Match' object is unsubscriptable

# Why result cannot be accessed like array?

NV

window.addEventListener('load', function(){
  //Works in Opera
  //Doesnt' work in Greasemonkey
  alert('window')
}, false)

window.wrappedJSObject.addEventListener('load', function(){
  //Doesn't work in Opera
  //Works in Greasemonkey. See http://wiki.greasespot.net/UnsafeWindow
  alert('wrappedJSObject')

NV

// this gist is response to http://dmitry.baranovskiy.com/post/201475166

// Code by Dmitry Baranovskiy
var w=window,e=w.addEventListener,v=w.attachEvent;e&&e("load",a,!1);v&&v("onload",a);google.timers.load.t.prt=+new Date;

// Mine optimization. 4 characters less!
window[/*@cc_on'attachEvent'||@*/'addEventListener'](/*@cc_on'on'+@*/'load',a,0);google.timers.load.t.prt=+new Date;

// I found /*@cc_on @*/ trick at http://lusever.livejournal.com/43326.html

NV

/**
 * 'Hello world'.insert(6, 'happy ') == 'Hello happy world'
 * 'Hello world'.insert(-1, '!!!') == 'Hello world!!!'
 * @param at {Number} index
 * @param text {String}
 * @see http://ruby-doc.org/core/classes/String.html#M000773
 */
String.prototype.insert = function (at, text) {
    if (at < 0) {
        at += this.length + 1;

NV

DirectoryIndex index.html index.htm index.xhtml index.xml index.php

AddType message/rfc822 mht
AddType application/octet-stream safariextz
AddType application/atom+xml atom
AddType application/msword doc
AddType application/opensearchdescription+xml osd
AddType application/pdf pdf
AddType application/rdf+xml rdf
AddType application/rss+xml rss

NV

/*
 * Handy URL params access
 * @example
 *   location.href = 'http://www.google.com/search?q=foo+bar&client=firefox'
 *   location.params == {q: 'foo+bar', client: 'firefox'}
 */

// JS 1.6 
location.params = {};
location.search.substr(1).split('&').forEach(function(el){

NV

function source_of (array, up_to_dimension) {

  // Your implementation

}

source_of([1, [2, [3]]], 0) == '[1, ?]'
source_of([1, [2, [3]]], 1) == '[1, [2, ?]]'
source_of([1, [2, [3]]], 2) == '[1, [2, [3]]]'

NV

#!/bin/sh
# /usr/local/sbin/post-firewall
# $1 = vlan1
# $2 = 192.168.1.1

iptables -t nat -I PREROUTING 1 -p tcp -d "$2" --dport 80 -j DNAT --to "$2":8082
iptables -t nat -D PREROUTING -i "$1" -p tcp --dport 80 -j DROP
iptables -t nat -I PREROUTING 2 -i "$1" -p tcp --dport 8082 -j DROP
iptables -I INPUT 1 -i "$1" -d "$2" -p tcp --syn --dport 8082 -j ACCEPT

NV

// JS Events API sucks. addEventListener ugly. If I'll design this API from scratch, I've done this:

window.events // {}
window.events.load // []
window.events.load.length // 0

window.events.load.push(function(e){
  alert('window loaded')
})
window.events.load.length // 1