Question

I am experimenting with arrays, and am reading the book “Beginning Ruby on Rails” by Steve Holzner. I made the program:

array = ['Hello', 'there', 1, 2]
puts array[1]
puts array[3]
puts array.length
array2 = Array.new
puts array2.length
array2[0] = "Banana"
array2[1] = 6
puts array2[0] + " " + array2[1]
puts array3.length

It doesn’t do much, but when i run it i get the error

arrays.rb:9:in `+': can't convert Fixnum into String (TypeError)
    from arrays.rb:9

Why do I get this error?

Answer 1

You can’t add a string and a integer (Fixnum), in this case you tried to add 6 to “Banana”.

If on line 9 you did this:

puts array2[0] + " " + array2[1].to_s

You would get:

"Banana 6"