sorting an array that contains nil in Ruby using sort_by

Hi, I'm CEO at Indieverse and owner of DAINOTE

Premise

• If there is an array like the following, trying to sort it can sometimes fail

arr = [1,2,3,4,5,nil,6,7,8]
arr.sort_by{|item| item}
# -> ArgumentError: comparison of Integer with nil failed

• When nil is present, I want to consider the nil value and change it to the oldest value before sorting

Conclusion

• Treat nil as Float::INFINITY (infinity)

ruby
arr = [1,2,3,4,5,nil,6,7,8]
arr.sort_by { |item| item.nil? ? Float::INFINITY : item }