Created
December 25, 2013 14:12
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| (def v [[1 2] [1 1] [2 1] [2 4]]) | |
| (partition-by #(first %) v) | |
| ;; => (([1 2] [1 1]) ([2 1] [2 4])) | |
| (group-by #(first %) v) | |
| ;; => {1 [[1 2] [1 1]], 2 [[2 1] [2 4]]} | |
| ;; ruby version | |
| ;; v.group_by{|v| v[0]} | |
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