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When using other languages, the "unflatten from string" operator is not available; in these cases, you have to decode the 2D-array.
The 2D-array is written in memcached as two I32 numbers – that report the number of rows and the number o columns of the 2D-array , – followed by a series of DBL numbers (ordered row by row). The following example, reports the 2D representation of a 2-rows, 3-cols array with the values: row 0 = [0,1,2], row 1 = [10,11,12]
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