hamajyotan

# app/models/hoge.rb
class Hoge < ApplicationRecord
  validates :foo, presence: true
  validates :bar, presence: true
  validates :foo, uniqueness: { scope: [:bar] }
end

hamajyotan

# frozen_string_literal: true                                                                                                                                                                                                                                  

# NOT NULL 制約の定義されている列に対し、自動的に presence バリデーションを付与します
#
module AutoPresenceValidation
  extend ActiveSupport::Concern

  included do
    ignore_types = %i[boolean]

hamajyotan

Ruby 2.3 変更点とか

p self

• @hamajyotan (SAKAGUCHI Takashi)
• office ummm
• rubyist
• slowlife engineer (farmer, programmer)

changelog

hamajyotan

#!/usr/bin/env ruby                                                                                                                                                                                       

require 'bundler'
Bundler.require

Capybara.run_server = false
Capybara::Session.new(:poltergeist).tap do |page|
  page.visit 'https://www.so-net.ne.jp/retail/w/'
  page.within 'form[name=Login]' do
    page.find('input[name=IDToken1]').set ENV['ZEROSIM_ID']

hamajyotan

def f *args
  args.map(&:to_s).permutation.map { |x| x.join.to_i }.max
end                                                   

hamajyotan

def with_retry times: 2, catch: StandardError
  yield binding.local_variable_defined?(:tries) ? binding.local_variable_get(:tries).to_i : 0 
rescue *catch
  raise unless (tries = tries.to_i + 1) < times
  retry
end

# or

def with_retry times: 2, catch: StandardError

hamajyotan

require 'active_record/relation'

# Usage
#
# class User
#   scope :foo, -> { where(name: 'foo') }
#   scope :bar, -> { where(name: 'foo') }
# end
#
# > User.foo.or User.bar

hamajyotan

#!/usr/bin/env ruby

# Usage: ./hoge KEYWORD
#
# ./hoge Java
# =>
#  名前 Java<br/> パラダイム 構造化プログラミング 構造化・命令型プログラミング...
#

require 'net/http'

hamajyotan

# -*- encoding: utf-8 -*-

class Hoge
  def moe 
    `ls -l`
  end 
end

describe "hoge" do
  let(:hoge) { Hoge.new }

hamajyotan

# Dollar class.
#
#  d1 = Dollar.new 12345     # => $ 12,345.00
#  d1.dollar                 # => 12345
#  d2 = Dollar.new 1234, 567 # => $ 1,239.67
#  d2.cent                   # => 67
#  d3 = Dollar.new 1239, 67  # => $ 1,239.67
#  d2 == d3                  # => true
#  d4 = Dollar.new 12345, 2  # => $ 12,345.02
#  (d1..d4).to_a             # => [$ 12,345.00, $ 12,345.01, $ 12,345.02]