tristanm

Migrating a Rails project from MySQL to PostgreSQL

This brief guide is written from my own experience with migrating a large (~5GB) MySQL database to PostgreSQL for a Rails project.

No warranties, guarantees, support etc. Use at your own risk and, as always, ENSURE YOU MAKE BACKUPS FIRST!

I chose [pgloader][1] because it's extremely fast. YMMV.

1. Replace mysql2 gem with pg in Gemfile.
2. Update config/database.yml for PostgreSQL. I used [Rails' template][2] as a starting point.

jlecour

# encoding: UTF-8

require 'optparse'
require 'net/http'
require 'json'

def parse_options(argv)
  opts = {}

  @parser = OptionParser.new do |o|

rigibun

C++初心者がC++を使って競技プログラミングするための備忘録のようなもの

この記事は、C++ (fork) Advent Calendar 2013の12日目の記事です。

はじめに

記事を書く人が居ないみたいなので、C++初心者ですが箸休め的な記事を書こうと思い立ち、いざ書き上げてみたら思いの外長くなりました。

この記事は、C++初心者な著者が、C++を用いて競技プログラミングをするために、調べたことや試した事などのまとめです。 記事中に誤り、問題点やご指摘、ご質問等ありましたら、@rigibunまでご連絡下さい(特にpush_bach)

githubのmarkdownを使いたかったことと、変更履歴が見られることからgistで書きました。

SabretWoW

# This is a skeleton for testing models including examples of validations, callbacks,
# scopes, instance & class methods, associations, and more.
# Pick and choose what you want, as all models don't NEED to be tested at this depth.
#
# I'm always eager to hear new tips & suggestions as I'm still new to testing,
# so if you have any, please share!
#
# @kyletcarlson
#
# This skeleton also assumes you're using the following gems: 

dergachev

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application: