jordansissel

logstash json format

{
  "message"    => "hello world",
  "@version"   => "1",
  "@timestamp" => "2014-04-22T23:03:14.111Z",
  "type"       => "stdin",
  "host"       => "hello.local"
}

tokudu

#!/bin/bash
# SSH into an EC2 instance by name
# Author: tokudu@github.com (SoThree.com).

set -e
if [ $# -lt 1 ]
then
  echo "Usage: `basename $0` instance_name"
  exit 1
fi

rclayton-the-terrible

# Make sure you have Mercurial and Git installed

git clone https://github.com/rabbitmq/rabbitmq-public-umbrella.git

cd rabbitmq-public-umbrella
make co
cd rabbitmq-web-stomp
git clone https://github.com/jshiell/rabbitmq-web-stomp.git
make
cd dist

ikenna

class Stopwatch
 
  def initialize()
    @start = Time.now
  end
   
  def elapsed_time
    now = Time.now
    elapsed = now - @start
    puts 'Started: ' + @start.to_s

jjb

This all applies to Ruby 2.1. In some cases a setting is not available in 2.0, this is noted. There is also a different with 1.9, 1.8, and REE --- these are not noted.

All the relevant code is in https://github.com/ruby/ruby/blob/master/gc.c

RUBY_HEAP_MIN_SLOTS

default: 10000

The number of heap slots to start out with. This should be set high enough so that your app has enough or almost enough memory after loading so that it doesn't have to allocate more memory on the first request (althogh this probably isn't such a big deal for most apps).

(todo: figure out how big a slot is. i think the answer can be infered from this code.)

CodingFu

var mysql = require('mysql')
  , bcrypt = require('bcrypt')
  , db = {
    host: 'localhost',
    user: 'root',
    database: 'prod'
  };

function checkUser(email, password, callback) {
  var connection = mysql.createConnection(db);

nuance

cat datasets/auto_mpg.csv | python csv2vw.py car_name mpg > auto_mpg.vw
cat auto_mpg.vw | vw -f auto_mpg.sgd --sgd --loss_function=squared
cat auto_mpg.vw | vw -kc -f auto_mpg.sgd --sgd --passes 10 --loss_function=squared
cat auto_mpg.vw | vw -kc -f auto_mpg.sgd --sgd --passes 10 --loss_function=squared
cat auto_mpg.vw | vw -kc -f auto_mpg.bfgs --bfgs --hessian_on --passes 100 --loss_function=squared
cat auto_mpg.vw | vw -kc -i auto_mpg.sgd -f auto_mpg.hybrid --bfgs --hessian_on --passes 100 --loss_function=squared

head -n 350 auto_mpg.vw > auto_mpg.vw.train
tail -n 48 auto_mpg.vw > auto_mpg.vw.test

kevin-smets

Default

Powerlevel10k

rothgar

# Idempotent way to build a /etc/hosts file with Ansible using your Ansible hosts inventory for a source.
# Will include all hosts the playbook is run on.
# Inspired from http://xmeblog.blogspot.com/2013/06/ansible-dynamicaly-update-etchosts.html

- name: "Build hosts file"
  lineinfile: dest=/etc/hosts regexp='.*{{ item }}$' line="{{ hostvars[item].ansible_default_ipv4.address }} {{item}}" state=present
  when: hostvars[item].ansible_default_ipv4.address is defined
  with_items: groups['all']

lovasoa

function byteLength(str) {
  // returns the byte length of an utf8 string
  var s = str.length;
  for (var i=str.length-1; i>=0; i--) {
    var code = str.charCodeAt(i);
    if (code > 0x7f && code <= 0x7ff) s++;
    else if (code > 0x7ff && code <= 0xffff) s+=2;
    if (code >= 0xDC00 && code <= 0xDFFF) i--; //trail surrogate
  }
  return s;