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@tony-landis
tony-landis / pdo-singleton-class.php
Created December 3, 2008 07:36
PHP PDO Singleton Class
<?php
/**
* PDO SINGLETON CLASS
*
* @author Tony Landis
* @link http://www.tonylandis.com
* @license Use how you like it, just please don't remove or alter this PHPDoc
*/
class sdb
@jboner
jboner / latency.txt
Last active July 25, 2024 11:30
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
@ferventcoder
ferventcoder / setup.ps1
Last active December 12, 2019 16:59
Really rocking out the environment setup
$scriptDir = $(Split-Path -parent $MyInvocation.MyCommand.Definition)
function Install-NeededFor {
param(
[string] $packageName = ''
,[bool] $defaultAnswer = $true
)
if ($packageName -eq '') {return $false}
$yes = '6'
@sindresorhus
sindresorhus / post-merge
Last active July 25, 2024 06:53
git hook to run a command after `git pull` if a specified file was changed.In this example it's used to run `npm install` if package.json changed and `bower install` if `bower.json` changed.Run `chmod +x post-merge` to make it executable then put it into `.git/hooks/`.
#!/usr/bin/env bash
# MIT © Sindre Sorhus - sindresorhus.com
# git hook to run a command after `git pull` if a specified file was changed
# Run `chmod +x post-merge` to make it executable then put it into `.git/hooks/`.
changed_files="$(git diff-tree -r --name-only --no-commit-id ORIG_HEAD HEAD)"
check_run() {
echo "$changed_files" | grep --quiet "$1" && eval "$2"
@Rich-Harris
Rich-Harris / service-workers.md
Last active July 10, 2024 17:04
Stuff I wish I'd known sooner about service workers

Stuff I wish I'd known sooner about service workers

I recently had several days of extremely frustrating experiences with service workers. Here are a few things I've since learned which would have made my life much easier but which isn't particularly obvious from most of the blog posts and videos I've seen.

I'll add to this list over time – suggested additions welcome in the comments or via twitter.com/rich_harris.

Use Canary for development instead of Chrome stable

Chrome 51 has some pretty wild behaviour related to console.log in service workers. Canary doesn't, and it has a load of really good service worker related stuff in devtools.

@unicodeveloper
unicodeveloper / systemjs.config.js
Last active November 20, 2023 05:41
SystemJS config file
/**
* System configuration
*/
(function (global) {
System.config({
paths: {
// paths serve as alias
'npm:': 'node_modules/'
},
// map tells the System loader where to look for things