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def kpi(campaigns)
  {
    unique_views: campaigns.sum(:unique_views),
    clicks: campaigns.sum(:clicker),
    sent: campaigns.sum(:sent),
    turnover: campaigns.sum(:turnover),
    cost: campaigns.sum(:cost),
    margin: campaigns.sum(:margin),
    active_sent: active_campaigns.sum(:sent),
    active_margin: active_campaigns.sum(:margin),

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Usage:
  rails generate test_unit:helper NAME [options]

Options:
  [--skip-namespace], [--no-skip-namespace]  # Skip namespace (affects only isolated applications)

Runtime options:
  -f, [--force]                    # Overwrite files that already exist
  -p, [--pretend], [--no-pretend]  # Run but do not make any changes
  -q, [--quiet], [--no-quiet]      # Suppress status output

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defmodule Scrabble do
  def score(l) when l in [nil, ""] do: 0
  def score(l) when l in ["A", "E", "I", "O", "U"] do: 1
  
  def score(word) do
    word
    |> String.upcase
    |> String.split("")
    |> Enum.map(&(score(&1)))
    |> Enum.sum

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def if_statement
  return a unless condition?
  
  c(
    1,
    2,
    3
  )
end

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def if_statement
  a
  if condition?
    c(
      1,
      2,
      3
    )
  end
end

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class Parent < ActiveRecord::Base

has_many :children


#Question: Does method below perform a join in children and match only children belonging to a specific parent? 

def has_active_children
  children.exists?(status: "active")
end

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  # Fetchs campaigns from SiB

    class CampaignFetch
      def get
        def sib
            @sib ||= Mailin.new("API_URL","API_KEY")
        end

        def shoot_criteria
           { "type"=>"classic", "status" => "sent", "page"=>10,"page_limit"=>1000 }

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# fetchs SIB Account information
    def sib_account_fetch
      sib = Mailin.new("API_URL","API_KEY")
      acct = sib.get_account()
      acct.dig('data')
      credits = acct.dig('data', 0).to_h
      SibAccount.find(1).update_attributes(credits)
      details = acct.dig('data', 2).to_h
      SibAccount.find(1).update_attributes(details).delay

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require 'rubygems'
require 'nokogiri'
require 'open-uri'

page = Nokogiri::HTML(open("http://v-tac.eu/led-lights/lights1/led-spotlights/led-spotlight-7w-gu10-smd-white-plastic-white-detail.html"))
puts page.class   # => Nokogiri::HTML::Document

fields = page.css(".product-field-type-S")
fields.each do |field|
  key = field.css(".product-fields-title").text

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class User < ActiveRecord::Base
  has_many :groups
end

class Group < ActiveRecord::Base
  has_and_belongs_to_many :users
end