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by Matthew Bass.
Original Post: How to safely transpose Ruby arrays
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Ruby arrays have this handy method called transpose which takes an existing 2-dimensional array (i.e. a matrix) and flips it on its side:
>> a = [[1,2], [3,4], [5,6]]
>> puts a.transpose.inspect
[[1, 3, 5], [2, 4, 6]]
Each row becomes a column, essentially. This is fine and dandy for polite arrays. If one of the rows in the [...]
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