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@paulirish
paulirish / gist:366184
Created April 14, 2010 18:59
html5 geolocation with fallback.
// geo-location shim
// currentely only serves lat/long
// depends on jQuery
// doublecheck the ClientLocation results because it may returning null results
;(function(geolocation){
if (geolocation) return;
!function() {
var doc = document,
htm = doc.documentElement,
lct = null, // last click target
nearest = function(elm, tag) {
while (elm && elm.nodeName != tag) {
elm = elm.parentNode;
}
return elm;
};
// find out what prefix this browser supports.
// usage: gimmePrefix('transform') // 'WebkitTransform'
// returns false if unsupported.
function gimmePrefix(prop){
var prefixes = ['Moz','Khtml','Webkit','O','ms'],
elem = document.createElement('div'),
upper = prop.charAt(0).toUpperCase() + prop.slice(1);
@addyosmani
addyosmani / visibly.js
Created August 3, 2011 12:44
Cross-browser Page Visibility API polyfill
/*!
* isVis - v0.5.5 Aug 2011 - Page Visibility API Polyfill
* Copyright (c) 2011 Addy Osmani
* Dual licensed under the MIT and GPL licenses.
*/
(function () {
window.visibly = {
b: null,
q: document,
@sindresorhus
sindresorhus / countrycode-latlong-array.json
Created November 5, 2011 16:03
Country codes (ISO 3166) to latitude longitude - converted from http://www.maxmind.com/app/country_latlon
{
"ad": [
"42.5000",
"1.5000"
],
"ae": [
"24.0000",
"54.0000"
],
"af": [
@mattpodwysocki
mattpodwysocki / rx-js-multiples.js
Created November 12, 2011 03:43
RxJS with combineLatest and zip N parameters
// Combine Latest
var obs1 = Rx.Observable.returnValue(1),
obs2 = Rx.Observable.returnValue(2),
obs3 = Rx.Observable.returnValue(3);
// From Observable with splat
Rx.Observable.combineLatest(obs1, obs2, obs3, function(o1, o2, o3) {
return o1 + o2 + o3;
}).subscribe(function(result) {
console.log(result); // 6
/*
* Minimal classList shim for IE 9
* By Devon Govett
* MIT LICENSE
*/
if (!("classList" in document.documentElement) && Object.defineProperty && typeof HTMLElement !== 'undefined') {
Object.defineProperty(HTMLElement.prototype, 'classList', {
get: function() {
@bryanveloso
bryanveloso / brew-services.rb
Created December 8, 2011 09:39 — forked from lwe/brew-services.rb
External script for homebrew to simplify starting services via launchctl, out of the box support for any formula which implements #startup_plist. (This version fixes the deprecation warning raised on Formula.resolve_alias.)
#!/usr/bin/env ruby -w
# brew-services(1) - Easily start and stop formulas via launchctl
# ===============================================================
#
# ## SYNOPSIS
#
# [<sudo>] `brew services` `list`<br>
# [<sudo>] `brew services` `restart` <formula><br>
# [<sudo>] `brew services` `start` <formula> [<plist>]<br>
// Includes functions for exporting active sheet or all sheets as JSON object (also Python object syntax compatible).
// Tweak the makePrettyJSON_ function to customize what kind of JSON to export.
var FORMAT_ONELINE = 'One-line';
var FORMAT_MULTILINE = 'Multi-line';
var FORMAT_PRETTY = 'Pretty';
var LANGUAGE_JS = 'JavaScript';
var LANGUAGE_PYTHON = 'Python';
@jboner
jboner / latency.txt
Last active May 23, 2024 06:51
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD