hidenba

class Person
  include ActiveModel::Validations

  attr_accessor :age,:name
  validates_presence_of :name

  def initialize(attr = {})
    attr.each { |n, v| send("#{n}=", v)} 
  end
end

hidenba

#content
  %strong Person
  %p 
    = flash[:notice]
  - form_for(:person, :url => acms_path) do |f|
    %p
      name: 
      = f.text_field :name
    %p
      age: 

hidenba

production:
  adapter: jdbc
  driver: com.microsoft.sqlserver.jdbc.SQLServerDriver
  url: jdbc:sqlserver://localhost;database=database;
  username: user
  password: password

hidenba

# changedの振る舞い
t = Event.new
param = {:year=>2000, :month=>'', :day=>nil}
t.attributes = param

t.changed?       #=> true
t.year_changed?  #=> true
t.month_changed? #=> false
t.day_changed?   #=> false
t.changes        #=> {"year"=>[nil, 2000]}

hidenba

@hoges =Kaminari::paginate_array(Hoge.find_by_sql('select * from hoges limit 25'), total_count: 37,).page(1).per(25)
paginate @hoges

hidenba

ruby -e 'puts `vm_stat`.gsub!(/([0-9]*)\.$/){ "#{($1.to_i * 4096 / 1000000.0).round(2)}M" }'

hidenba

class WebkitToPng

  def self.create(urls, options={})
    urls.each do |url|
      puts "convert #{url} to #{options[:dir]}"
      url.sub!('//', "//#{options[:auth]}@") if options[:auth]
      op = "-F -D #{options[:dir]} -o #{url.split('/').last}"
      op += " --user-agent='#{user_agent}'" if options[:mobile]
      exec(url, op)
    end

hidenba

class Point
  attr_accessor :point, :color

  def initialize(point, color)
    @point = point
    @color = color
  end

  def toggle
    @color = color == 'R' ? 'W' : 'R'

hidenba

class Tournament
  def self.start(players)
    if  players.length == 2
      game(players, []).first
    else
      left_count   = players.length / 2
      right_count  = players.length - left_count

      right = players.pop(right_count)
      left  = players

hidenba

public class Game {
    public static Player matchUp(Player player1, Player player2) {
        String left  = player1.getStrategy(player2.getStrategySize());
        String right = player2.getStrategy(player1.getStrategySize());

        for(int i=0; i < left.length(); i++) {
            char left_hand  = left.charAt(i);
            char right_hand = right.charAt(i);
            if( left_hand == 'R' && right_hand =='S') {
                return player1;