CODEWITHSUNDEEP
rubyarrays
Steve
Steve

Reputation: 5

How do I print the values of instance variables for each instance of a class?

I'm looking to print out the name and status variables for each instance of the FamilyMember class. I've created the instances and added them to an array. When I attempt to loop through the array using the .each method the name and status variables are not recoignised. Any help would be greatly appreciated. 

class FamilyMember
  attr_reader :name, :age, :sex, :status, :country



  def initialize (name, age, sex, status, country)
    @name = name
    @age = age
    @sex = sex
    @status = status
    @country = country

  end

  def parent?

  end

  def child?

  end
end

Instances of the class

fm1 = FamilyMember.new('Scott', 18 , 'Male', 'Employed', 'America'),
fm2 = FamilyMember.new('Stephen', 30, 'Male', 'Employed', 'Ireland'),
fm3 = FamilyMember.new('Gillian', 50, 'Female', 'Employed', 'Ireland'),
fm4 = FamilyMember.new('Rolf', 56, 'Male', 'Employed', 'Ireland'),
fm5 = FamilyMember.new('Shane', 14, 'Male', 'Unemployed', 'Ireland')

Creating array

array_1 = Array.new

Adding elements to the array

array_1 << fm1
array_1 << fm2
array_1 << fm3
array_1 << fm4
array_1 << fm5


array_1.each do |p| #Trying to print out the name and status values for each instance.
  puts "#{p.name} is #{p.status}"
end

Upvotes: 0

Views: 83

Answers (1)

Uri Agassi
Uri Agassi

Reputation: 37409

Your problem is that you ended each instance creation line in your code with ,. That's why fm1 is actually created as an array instead of a FamilyMember

fm1.class
# => Array

simply remove the , at the end of lines:

fm1 = FamilyMember.new('Scott', 18 , 'Male', 'Employed', 'America')
fm2 = FamilyMember.new('Stephen', 30, 'Male', 'Employed', 'Ireland')
fm3 = FamilyMember.new('Gillian', 50, 'Female', 'Employed', 'Ireland')
fm4 = FamilyMember.new('Rolf', 56, 'Male', 'Employed', 'Ireland')
fm5 = FamilyMember.new('Shane', 14, 'Male', 'Unemployed', 'Ireland')

and try again:

array_1 = Array.new
array_1 << fm1
array_1 << fm2
array_1 << fm3
array_1 << fm4
array_1 << fm5


array_1.each do |p|
  puts "#{p.name} is #{p.status}"
end

Output:

Scott is Employed
Stephen is Employed
Gillian is Employed
Rolf is Employed
Shane is Unemployed

Upvotes: 3

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