dmakhmutov

1. Create command line tool for rumybine https://www.jetbrains.com/help/ruby/working-with-the-ide-features-from-command-line.html#arguments

2. Open iterm -> Profiles -> Advanced -> Semantic History -> Run command and past

[ -z "\2" ] &&  /usr/local/bin/mine \1 || /usr/local/bin/mine --line \2  \1

dmakhmutov

http://stackoverflow.com/questions/22667401/postgres-json-data-type-rails-query
http://stackoverflow.com/questions/40702813/query-on-postgres-json-array-field-in-rails

#payload: [{"kind"=>"person"}]
Segment.where("payload @> ?", [{kind: "person"}].to_json)

#data: {"interest"=>["music", "movies", "programming"]}
Segment.where("data @> ?",  {"interest": ["music", "movies", "programming"]}.to_json)
Segment.where("data #>> '{interest, 1}' = 'movies' ")
Segment.where("jsonb_array_length(data->'interest') > 1")

dmakhmutov

module Enumerable
  def cluster
    cluster = []
    each do |element|
      cluster.last && cluster.last.last == element ? cluster.last << element : cluster << [element]
    end
    cluster
  end
end

dmakhmutov

module Enumerable
  def cluster
    cluster = []
    each do |element|
      if cluster.last && cluster.last.last == element
        cluster.last << element
      else
   	cluster << [element]
      end
     end