02 October 2013

Orders Aggregator - a funny program

Today, I was responsible about aggregating the food orders from my colleges, and since I wanted it to be accurate I decided to write my first ruby script (Thanks to Google)

Here it is:
# Orders Aggregator

class BreadType
  attr_accessor :type
  def initialize(type)
    @type = type
  end
  
  def eql?(other)
    @type = other.type
  end
  
  def hash
    @type.hash
  end
  
  def to_s
    @type
  end
end

class Sandwich
  attr_accessor :name, :type

  def initialize (name, type)
    @name = name
    @type = type
  end
  
  def eql?(other)
    @name = other.name #&& @type = other.type # buggy and I cannot resolve, so I decided to comment
  end
  
  def hash
    @name.hash ^ @type.hash
  end
  
  def to_s
    @name.to_s << " : " << @type.to_s
  end
end

balady = BreadType.new "Balady"
shamy = BreadType.new "Shamy"

# Talaat
talaat = []
talaat << Sandwich.new(:Ta3mya, balady) << Sandwich.new(:Batates_omlete, balady)
# Hewedy
hewedy = []
2.times {
  hewedy << Sandwich.new(:Ta3mya, balady)
}
# Ahmad
ahmad = []
ahmad << Sandwich.new(:Swabe3_Salada, balady) << Sandwich.new(:Fol_Eskandrany, balady)
# Khalid
khalid = []
khalid << Sandwich.new(:Ta3mya_Eskandrany, balady)
# Alaa
alaa = []
alaa << Sandwich.new(:Ta3mya_Eskandrany, balady)
# Hatem
hatem = []
3.times {
  hatem << Sandwich.new(:Ta3mya, shamy)
}

total = talaat + hewedy + ahmad + khalid + alaa + hatem

counts = Hash.new(0)
total.each { |name| counts[name] += 1 }

puts "Aggregation: "
counts.each { |k, v|
  puts k.to_s << " ::" << v.to_s
}

Output:
Aggregation: 
Batates_omlete : Balady ::1
Ta3mya : Shamy ::3
Swabe3_Salada : Balady ::1
Ta3mya : Balady ::3
Ta3mya_Eskandrany : Balady ::2
Fol_Eskandrany : Balady ::1

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