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what is the best idiom to perform the opposite of "zip"? (besides "unfold")
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bwv549
Oct 2, 2012, 12:37:46 AM10/2/12
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I need to turn some list of pairs into two arrays (the opposite of zipping two arrays together). There is a solution using "unfold" here (http://weblog.raganwald.com/2007/11/really-useful-anamorphisms-in-ruby.html) but that seems like more than what I want for this task.
I want to turn this:
[[1,2][3,4],[5,6]]
Into:
[[1,3,5], [2,4,6]]
What's the best ruby idiom for doing this task. Can it be generalized for triplets, quadruplets, etc.?
Or, if you use unfold, is there a particular gem you use and does it take a major performance hit?
I want to turn this:
[[1,2][3,4],[5,6]]
Into:
[[1,3,5], [2,4,6]]
What's the best ruby idiom for doing this task. Can it be generalized for triplets, quadruplets, etc.?
Or, if you use unfold, is there a particular gem you use and does it take a major performance hit?
bwv549
Oct 2, 2012, 12:42:42 AM10/2/12
to
Array#transpose
And I've used and recommended this many times...
And I've used and recommended this many times...
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