jimbojsb

Step 0:

Get Homebrew installed on your mac if you don't already have it

Step 1:

Install highlight. "brew install highlight". (This brings down Lua and Boost as well)

Step 2:

patakijv

class ChangeIgnoredToBoolean < ActiveRecord::Migration
  # we should have been using boolean vs string for a flag instead of a string
  def up
    # preserve existing data
    @saved_ignored_state = Message.all.map(&:ignored)
    change_column(:messages, :ignored, :boolean, :default => false)
    Message.reset_column_information
    Message.all.each_with_index do |message,index|
      message.update_attribute(:ignored,@saved_ignored_state[index] == 'true')
    end

jboner

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

josephwecker

#!/bin/bash
# License: Public Domain.
# Author:  Joseph Wecker, 2012
#
# -- DEPRICATED --
# This gist is slow and is missing .bashrc_once
# Use the one in the repo instead! https://github.com/josephwecker/bashrc_dispatch
# (Thanks gioele)
#
# Are you tired of trying to remember what .bashrc does vs .bash_profile vs .profile?

piscisaureus

Locate the section for your github remote in the .git/config file. It looks like this:

[remote "origin"]
	fetch = +refs/heads/*:refs/remotes/origin/*
	url = git@github.com:joyent/node.git

Now add the line fetch = +refs/pull/*/head:refs/remotes/origin/pr/* to this section. Obviously, change the github url to match your project's URL. It ends up looking like this:

dergachev

backup services research

I googled around, especially with site:news.ycombinator.com for backup recommendations. Here are notes on the top hits.

tarsnap

http://www.tarsnap.com/

• by prolific HN member; focus on encryption and deduplication

zmajstor

= simple_form_for @portfolio do |f|
  = f.input :title, label: 'Portfolio Title'

  = f.simple_fields_for :assets do |assets_form|
    .duplicatable_nested_form
      = assets_form.association :stock
      = assets_form.input :amount, :input_html => { min: 0 }

      = link_to 'Remove', '', :class => 'destroy_duplicate_nested_form'
      = assets_form.input :id, as: :hidden

subfuzion

Install with Homebrew

brew install redis

Set up launchctl to auto start redis

$ ln -sfv /usr/local/opt/redis/*.plist ~/Library/LaunchAgents

/usr/local/opt/redis/ is a symlink to /usr/local/Cellar/redis/x.y.z (e.g., 2.8.7)

janko

module MyApp
  class Application < Rails::Application
    # ...
    config.exceptions_app = self.routes

    config.action_dispatch.rescue_responses.merge!(
      "RDS::ResourceNotFound" => :not_found,
    )
    # ...
  end

zmajstor

# http://www.rdoc.info/github/costan/smartcard/master/Smartcard
require 'smartcard'

class SmartCardAdapter
  # scope of the smart-card connection; valid values are :system, :user, and :terminal 
  # (see the SCARD_SCOPE_ constants in the PC/SC API)
  def connect(scope = :system)
    @context = Smartcard::PCSC::Context.new(scope)
  end