Class: Alimento

Inherits:
Object
  • Object
show all
Includes:
Comparable
Defined in:
lib/nutrientes/alimento.rb

Overview

Class Alimento Stores a food and some values of its elements.

Direct Known Subclasses

Carbohidratado, Carnido, Fruta, Graso, OvoLacteo, Pescado, Verdura

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, proteins, glucids, lipids) ⇒ Alimento

Initialization of the object given its attributes

Parameters:

  • name (String) —

    Name of the Alimento

  • proteins (Fixnum) —

    Proteins ammount of the Alimento

  • glucids (Fixnum) —

    Glucids ammount of the Alimento

  • lipids (Fixnum) —

    Lipids ammount of the Alimento



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# File 'lib/nutrientes/alimento.rb', line 55

def initialize (name, proteins, glucids, lipids)
   @name = name
   @proteins = proteins
   @glucids = glucids
   @lipids = lipids
end

Instance Attribute Details

#glucids ⇒ Object (readonly)

Returns the value of attribute glucids.



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# File 'lib/nutrientes/alimento.rb', line 13

def glucids
  @glucids
end

#lipids ⇒ Object (readonly)

Returns the value of attribute lipids.



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# File 'lib/nutrientes/alimento.rb', line 13

def lipids
  @lipids
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/nutrientes/alimento.rb', line 13

def name
  @name
end

#proteins ⇒ Object (readonly)

Returns the value of attribute proteins.



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# File 'lib/nutrientes/alimento.rb', line 13

def proteins
  @proteins
end

Instance Method Details

#<=>(another) ⇒ Fixnum

Method to implement the comparison between two Alimentos

Parameters:

  • another (Object) —

    Object to compare with

Returns:

  • (Fixnum) —

    1 if the first object is bigger, 0 if equal and -1 if minor



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# File 'lib/nutrientes/alimento.rb', line 18

def <=>(another)
    if(another.caloric_value > caloric_value)
        return -1
    else
        if(another.caloric_value < caloric_value)
            return 1
        end
        if (another.proteins > proteins)
            return -1
        else
            if(another.proteins < proteins)
                return 1
            end
            if(another.glucids > glucids)
                return -1
            else
                if(another.glucids < glucids)
                    return 1
                end
                if(another.lipids > lipids)
                    return -1
                else 
                    if(another.lipids < lipids)
                        return 1
                    else return 0
                    end
                end
            end
        end
    end
end

#caloric_value ⇒ Fixnum

Calculates the caloric value of the Alimento

Returns:

  • (Fixnum) —

    The caloric value



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# File 'lib/nutrientes/alimento.rb', line 70

def caloric_value()
   return (@proteins * 4 + @lipids * 9 + @glucids * 4)
end

#to_s ⇒ String

Method to transform an object of Alimento to a string

Returns:

  • (String) —

    the object as a string



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# File 'lib/nutrientes/alimento.rb', line 64

def to_s() 
   return String.new(@name + ", " + @proteins.to_s + "g proteins, " + @glucids.to_s + "g glucids, " + @lipids.to_s + "g lipids")
end