ilake

# DATA, __END__,   pos
# http://shifteleven.com/articles/2009/02/09/useless-ruby-tricks-data-and-__end__
# http://stackoverflow.com/questions/1333720/ruby-scope-of-data-after-end

# You could lambda in when
case n
when lambda(&:even?)
  puts "This number is even."
...

ilake

# config.ru

if RUBY_VERSION =~ /1.9/
  Encoding.default_external = Encoding::UTF_8
  Encoding.default_internal = Encoding::UTF_8
end

ilake

# Understanding Ruby Blocks, Procs and Lambdas
# http://stackoverflow.com/questions/6372596/ruby-block-procs-and-instance-eval
# http://www.robertsosinski.com/2008/12/21/understanding-ruby-blocks-procs-and-lambdas/

# Metaprogramming Ruby: class_eval and instance_eval
# http://www.jimmycuadra.com/posts/metaprogramming-ruby-class-eval-and-instance-eval

my_proc = proc do
  puts "yeaaaaah"
end

ilake

    
    label_mapping = case state
                    when "abc", "def"
                      "label-success"
                    when "hij", "klm", "opq"
                      "label-important"  
                    ...
                    ...

                    end

ilake

PATH=/usr/local/bin:/usr/bin:/bin:$PATH
20 23 * * * cd /var/www/foo;RAILS_ENV=production bundle exec rake task:jobs auto_update=true >> /var/www/foo/log/foo_info_$(date +\%m\%d\%Y).log


PATH=/usr/local/bin:/usr/bin:/bin:$PATH
0 0 * * * cd /var/www/foo;RAILS_ENV=production bundle exec rake task:jobs auto_update=true from_date=$(date -dyesterday +\%m/\%d/\%Y) >> /var/www/foo/log/foo_info_$(date -dyesterday +\%m\%d\%Y).log

ilake

Contract Killer 3

Revised date: 07/11/2012

Between us [company name] and you [customer name]

Summary:

We’ll always do our best to fulfil your needs and meet your expectations, but it’s important to have things written down so that we both know what’s what, who should do what and when, and what will happen if something goes wrong. In this contract you won’t find any complicated legal terms or long passages of unreadable text. We’ve no desire to trick you into signing something that you might later regret. What we do want is what’s best for both parties, now and in the future.

ilake

execute <<-SQL
  UPDATE contacts
  SET country =
  CASE
  WHEN country = 'USA' THEN 'United States'
  WHEN country = 'Russia' THEN 'Russian Federation'
  WHEN country = 'Virgin Islands' THEN 'Virgin Islands, U.S.'
  END
  WHERE country in ('USA', 'Russia', 'Virgin Islands')
SQL

ilake

Information hub / team communication

• Trello - https://trello.com/
• Asana - http://asana.com/
• Campfire (can be integrated with some of the following service) - http://campfirenow.com/

Application platform

• Heroku - http://www.heroku.com/
• Cloud Foundry - http://www.cloudfoundry.com/
• Engine Yard - http://www.engineyard.com/

ilake

  def self.query_benchmark
    keys = Visit.column_names
    total = Visit.count
    Benchmark.bm(7) do |x|      
      # 346.010000   1.380000 347.390000 (357.346086)      
      # 361.920000   1.650000 363.570000 (417.746442)      
      x.report("ActiveRecord") do  
        Visit.find_in_batches(:batch_size => 5000) do |visits|
          visits.map{|v| keys.map{|k| v.send(k.to_sym)}}
        end

ilake

# railties/lib/rails/engine.rb 
    # Define the Rack API for this engine.    
    def call(env)
      app.call(env.merge!(env_config))
    end
      
    # We could find app from here
    # Returns the underlying rack application for this engine.
    def app
      @app ||= begin