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How does one make a 2D array of dataframes in R? (each cell is a dataframe)

How does one make a 2D array of dataframes in R, where each cell is a dataframe containing two rows of a given spreadsheet?

? Each column has the same number of rows.

? Each cell has a unique combination of columns, but the cell's columns are not unique

Another way of thinking of this is I want to translate the following Java to R:

DataFrame[][] tests = new DataFrame[6][32];
tests[1][1] = value;

Back to R, "value" is defined as:

value = table[,c(x,y)]

where x and y are variables indicating the columns of the spreadsheet.


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