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bostonaholic/gist:7588800

Created November 21, 2013 20:14
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Can anyone explain why Ruby Range#last works in this way?
Raw
gistfile1.txt
irb(main):017:0> (1..10).last # OK
=> 10
irb(main):019:0> (1...10).to_a.last # OK
=> 9
irb(main):018:0> (1...10).last # WAT
=> 10
irb(main):020:0>
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