addyosmani

CSS Layout Debugger

A tweet-sized debugger for visualizing your CSS layouts. Outlines every DOM element on your page a random (valid) CSS hex color.

One-line version to paste in your DevTools

Use $$ if your browser aliases it:

~ 108 byte version

stevekinney

// This will only work in environments that support ES6 Proxies.
// As of right now, that's pretty much only Firefox.

function Refrigerator(foods) {

  this.foods = foods;

  return new Proxy(this, {
    get: function (receiver, name) {
      if (name in receiver) {

GABeech

# This is an example of the Stack Exchange Tier 1 HAProxy config
# The only things that have been changed from what we are running are: 
# 1. User names have been removed
# 2. All Passwords have been remove
# 3. IPs have been changed to use the example/documentation ranges
# 4. Rate limit numbers have been changed to randome numbers, don't read into them

userlist stats-auth
        group admin users $admin_user
        user $admin_user insecure-password $some_password

carltondickson

# Exporting entire database:
mysqldump -u user -p database --opt | gzip > database.sql.gz

# Export table
mysqldump -uroot --opt --databases DB_NAME --tables TABLE_NAME | gzip > /tmp/TABLE_NAME.export.sql.gz

# Importing:
gunzip < database.sql.gz | mysql -u user -p database

# Credit http://failshell.io/mysql/using-gzip-and-gunzip-with-mysql-to-importexport-backups/

ustun

This document contains some notes I have gathered while I was trying to setup a redis service using boot2docker running on OS X. This won't cover what Docker is, see Docker website for details.

Installing boot2docker

First, install Virtualbox and follow the steps at http://docs.docker.com/installation/mac/

Since Docker only runs on Linux, boot2docker runs a virtual machine in Virtualbox (or VMWare etc), however you can run the docker command on OS X

mopemope

core@coreos-local ~ $ ./nspawn-container jmatis/tomcat7 "/opt/start-watch-tomcat.sh"
Pulling repository jmatis/tomcat7
b3dfa5e5f738: Download complete 
511136ea3c5a: Download complete 
5e66087f3ffe: Download complete 
4d26dd3ebc1c: Download complete 
d4010efcfd86: Download complete 
99ec81b80c55: Download complete 
c17d434dd941: Download complete 
180579a76826: Download complete 

tmm1

Ruby 2.1.0 in Production: known bugs and patches

Last week, we upgraded the github.com rails app to ruby 2.1.0 in production.
While testing the new build for rollout, we ran into a number of bugs. Most of
these have been fixed on trunk already, but I've documented them below to help
anyone else who might be testing ruby 2.1 in production.

@naruse I think we should backport these patches to the ruby_2_1 branch and
release 2.1.1 sooner rather than later, as some of the bugs are quite critical.
I'm happy to offer any assistance I can to expedite this process.

mischah

#The power of z

Do you spend lots of time doing things like this?

cd this/is/the/path/that/i/want/so/i/type/it/all/out/to/get/whereiwant

With z, you could just do this:

mtauraso

# LBs have 8 cores.  One is used for haproxy, rest are used for nginx workers
worker_processes 7;
worker_rlimit_nofile 90000;
 
pid <PID_FILE>;
 
events {
  use epoll;
  multi_accept off;
  accept_mutex off;

amatsuda

# put this piece of code in your spec/spec_helper.rb or spec/support/any_rb_file.rb
# then run `rake spec`
module CleanerBench
  def clean(*)
    now = Time.now
    super
    @time_spent ||= 0
    @time_spent += Time.now - now
  end