Hi

I have a data frame which looks like the following (it is a table of commit logs to a source repo). The Author column
is treated as a factor, by virtue of stringsAsFactors being set to TRUE, so I can extract the number of commits
per author by using table(logs$Author).

Is there an elegant way to extract all subsets of this frame by the Author column - i.e. that returns say a list of
data frames, each containing just the records for a specific value of Author?

Thanks
Rory

>head(logs)

  Revision Author                Date LinesChanged
1        6 user1  13/11/2007 15:41:53          488
2       11 user1 14/11/2007 09:04:43            3
3       12 user2 16/11/2007 12:26:04          522
4       13 user1 16/11/2007 12:27:55           90
5       14 user3 19/11/2007 09:32:54          159
6       15 user1 21/11/2007 13:38:41         1986



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