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mletterle/gist:904143

Created April 5, 2011 18:04
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gistfile1.txt
irb(main):001:0> a = [1, 2, 3]
=> [1, 2, 3]
irb(main):002:0> a[1]
=> 2
irb(main):003:0> a[0] + 1
=> 2
irb(main):004:0> a[1] + 1
=> 3
irb(main):005:0> a = ["1", "2", "3"]
=> ["1", "2", "3"]
irb(main):006:0> a[0] + 1
TypeError: can't convert Fixnum into String
from (irb):6:in `+'
from (irb):6
from :0
irb(main):007:0> a[0].to_i + 1
=> 2
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