scottsb

Guide to Resetting a csync2 Cluster

Introduction

These are possible steps to reset a csync2 cluster that has been seriously fubared. This is an apocalyptic approach and should only be used when more surgical fixes (like correcting an individual conflict) aren't workable.

Use Cases

bf4

cache:
  bundler: true
  directories:
    - reports
before_script:
- bundle clean --force # remove any cached brakeman from when it was in the Gemfile
script:
  - script/brakeman

patshaughnessy

This note explains how to build Postgres from source and setup to debug it using LLDB on a Mac. I used this technique to research this article:
http://patshaughnessy.net/2014/10/13/following-a-select-statement-through-postgres-internals

1. Shut down existing postgres if necessary - you don’t want to mess up your existing DB or work :)

$ ps aux | grep postgres
pat               456   0.0  0.0  2503812    828   ??  Ss   Sun10AM   0:11.59 postgres: stats collector process       
pat               455   0.0  0.0  2649692   2536   ??  Ss   Sun10AM   0:05.00 postgres: autovacuum launcher process       
pat               454   0.0  0.0  2640476    304   ??  Ss   Sun10AM   0:00.74 postgres: wal writer process       
pat               453   0.0  0.0  2640476    336   ??  Ss   Sun10AM   0:00.76 postgres: writer process       

amuntasim

##Create a migration
### rails g migration make_unicode_friendly

class MakeUnicodeFriendly < ActiveRecord::Migration
  def change
    alter_database_and_tables_charsets "utf8", "utf8_general_ci"
  end

  private
  def alter_database_and_tables_charsets charset = default_charset, collation = default_collation

peterhellberg

set :user, 'username'
set :gateway, 'example.com'

set :ssh_options, {
  user: fetch(:user),
  forward_agent: false,
  proxy: Net::SSH::Proxy::Command.new(
    "ssh -l #{fetch(:user)} #{fetch(:gateway)} -W %h:%p"
  )
}

apotonick

# Ruby Wishlist

## Removals

* finalize! method for classes
* Remove constant_finding/loading at runtime, it always breaks.

## Module.freeze

Remove the ability to dynamically change code at runtime

somebox

Thoughts about Rails Presenters

This is a collection of links, examples and rants about Presenters/Decorators in Rails.

---

The "Decorator" pattern slowly started gaining popularity in Rails several years ago. It is not part of core Rails, and there's many different interpretations about how it should work in practice.

Jay Fields wrote about it in 2007 (before he switched back to Java and then Clojure): http://blog.jayfields.com/2007/03/rails-presenter-pattern.html

skanev

require 'active_record'

ActiveRecord::Base.establish_connection(adapter: 'sqlite3', database: ':memory:')

ActiveRecord::Schema.define do
  create_table :activities do |t|
    t.string :day
    t.string :name
  end
end

lfbittencourt

#!/usr/bin/env ruby

# Only tags >= min_tag will be removed.
min_tag = '0.0.0'
tags = `git tag`.split(/\s+/).select do |t|
  Gem::Version.new(t) >= Gem::Version.new(min_tag)
end

`git tag -d #{tags.join ' '}`
`git push origin #{tags.map { |t| ':' + t }.join ' '}`

afn

# Borrowed from https://github.com/y310/rspec-retry/blob/master/lib/rspec/retry.rb

CAPYBARA_TIMEOUT_RETRIES = 3

RSpec.configure do |config|
  config.around(:each, type: :feature) do |ex|
    example = RSpec.current_example
    CAPYBARA_TIMEOUT_RETRIES.times do |i|
      example.instance_variable_set('@exception', nil)
      self.instance_variable_set('@__memoized', nil) # clear let variables