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by Graham Williams
Duck Duck Go


Locating Datasets in Memory

20200603 We can see that ds and weather reference the same dataset in memory using lobstr::ref() which shows actual memory addresses of the data.


This gets rather technical, but the strings of digits beginning with 0x are the actual memory addresses—that is, they are pointers to a direct location in our computer's memory. The 0x at the beginning of each identifies that a hexadecimal scheme is used, thus we see digits 0 to 9 and then the letters a, b, c, d, e, and f being used (16 digits).

The addresses recorded for weather and ds, including the addresses where we find the actual variables (columns) within each dataset, are identical.

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