Question

In the code below, I have given a default value for the accountNumber for when it is not called with a particular value but that value is not recognized by the code, why is that?

class BankAccount
   CONST=0100

   def interest_rate
        @@interest_rate = 0.2
   end

   def accountNumber
        @accountNumber
   end

   def accountNumber=(value = 10)
        puts value
        @accountNumber = value
   end
end

When I call the accountNumber= method as below with no arg, I expect it to puts “10” but it is not putting out the default value…

account1 = BankAccount.new()
puts account1.accountNumber=()

Answer 1

I cannot be fully sure, but it seems to be some irregularity due to the method name ending with =. That type of methods do not seem to accept default values correctly. When you change the method name to set_account_number, then it will work.