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  1. Prepare
  2. Ruby
  3. Enumerables
  4. Ruby - Enumerable - reduce
  5. Discussions

Ruby - Enumerable - reduce

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118 Discussions

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  • totem64
     + 0 comments
    #NEVER DO THIS
class Object
	Bignum=Integer
	Fixnum=Integer
end

def sum_terms(n)
	1.upto(n).inject(0) {|sum, n| sum + n**2 + 1}
end

  • mbvilh2o
     + 0 comments

    what a terrible challenge. This is the most complicated way of doing n**2 + 1 given that the input is n=25

  • dselimovic02
     + 0 comments
    Fixnum = Integer
Bignum = Integer

def sum_terms(n)
    1.upto(n).inject(0) {|sum, n| sum + n**2 + 1} 
end

  • kevinjohn_mcclu1
     + 0 comments

    No matter what I try, including the posted solutions, I get some error related to Fixnum and Bignum. The proposed fix for this error doesn't work, either.

  • nickcameron
     + 5 comments

    The

    uninitialized constant Fixnum (NameError)

    error is being caused by a hidden line of code which checks that we return a Fixnum or Bignum only. Unfortunately, these classes have not existed since Ruby 2.4+.

    I hope the challenge will be updated soon. In the meantime... the error can be fixed by adding the following code at the beginning of your submission:

    Fixnum = Integer
Bignum = Integer

    Cheers!