I was doing some koans today and came across something that doesn't really make sense to me... hoping someone can clarify.
array_test = [1, 2, 3, 4]
When I call array_test[3,1] => [4]
When I call array_test[4,1] => []
But then when I call array_test[5,1] => nil
Why is it that "array_test[4,1]" returns [], and "array_test[5,1] returns nil, even though both positions don't exist in the array?
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