carolineartz

require 'nokogiri'
require 'open-uri'

# Get a Nokogiri::HTML:Document for the page we're interested in...

doc = Nokogiri::HTML(open('http://www.google.com/search?q=tenderlove'))

# Do funky things with it using Nokogiri::XML::Node methods...

####

rubysolo

ActiveSupport::Notifications.subscribe 'halted_callback.action_controller' do |name, start, finish, id, payload|
  Rails.logger.warn { '=' * 80 }
  Rails.logger.warn { "HALTED CALLBACK: #{ payload[:filter] }" }
end

csfrancis

# Updated for Ruby 2.3
string_t = None

def get_rstring(addr):
  s = addr.cast(string_t.pointer())
  if s['basic']['flags'] & (1 << 13):
    return s['as']['heap']['ptr'].string()
  else:
    return s['as']['ary'].string()

rogerleite

require "csv"
require "date"

puts CSV::HeaderConverters.keys.inspect # => [:downcase, :symbol]

# Add new header converter
CSV::HeaderConverters[:remap] = lambda do |raw_value|
  raw_value = raw_value.to_sym
  case raw_value
  when :country

juliandunn

Deep Dive: PostgreSQL on AWS

When loading data

• disable backups (backup_retention=0)
• disable multi-AZ and autovacuum
• pg_dump -Fc (compressed) and pg_restore -j (parallel)
• Increase maintenance_work_mem

davidpdrsn

(because I can't remember anything)

Setup

gem install benchmark-ips
gem install stackprof
gem install allocation_tracer

averagehat

Vim Script
===========

#Defining functions
```VimL
fun! Foo()
" function body
endfun

mattheworiordan

#!/usr/bin/env ruby

require 'thor'

class SubCommandBase < Thor
  def self.banner(command, namespace = nil, subcommand = false)
    "#{basename} #{subcommand_prefix} #{command.usage}"
  end

  def self.subcommand_prefix

schneems

TIL attr_* methods are optomized.

class Whatever
  def foo
    @foo
  end

  attr_reader :bar
end

kazu69

# spec_helper.rb
RSpec.configure do |config|
  ...
  # テスト完了後一度だけ実行される
  config.after(:suite) do
    DatabaseCleaner.clean_with(:truncation)
  end
  
  # 各テスト実行前に実行される
  config.before(:each) do |spec|